diff --git a/common/arg.cpp b/common/arg.cpp
index 621d127da..f56daedb8 100644
--- a/common/arg.cpp
+++ b/common/arg.cpp
@@ -627,7 +627,7 @@ common_params_context common_params_parser_init(common_params & params, llama_ex
         [](common_params & params) {
             params.ctx_shift = false;
         }
-    ).set_examples({LLAMA_EXAMPLE_MAIN, LLAMA_EXAMPLE_SERVER, LLAMA_EXAMPLE_IMATRIX}).set_env("LLAMA_ARG_NO_CONTEXT_SHIFT"));
+    ).set_examples({LLAMA_EXAMPLE_MAIN, LLAMA_EXAMPLE_SERVER, LLAMA_EXAMPLE_IMATRIX, LLAMA_EXAMPLE_PERPLEXITY}).set_env("LLAMA_ARG_NO_CONTEXT_SHIFT"));
     add_opt(common_arg(
         {"--chunks"}, "N",
         string_format("max number of chunks to process (default: %d, -1 = all)", params.n_chunks),
@@ -2207,5 +2207,17 @@ common_params_context common_params_parser_init(common_params & params, llama_ex
         }
     ).set_examples({LLAMA_EXAMPLE_TTS, LLAMA_EXAMPLE_SERVER}));
 
+    // model-specific
+    add_opt(common_arg(
+        {"--tts-oute-default"},
+        string_format("use default OuteTTS models (note: can download weights from the internet)"),
+        [](common_params & params) {
+            params.hf_repo = "OuteAI/OuteTTS-0.2-500M-GGUF";
+            params.hf_file = "OuteTTS-0.2-500M-Q8_0.gguf";
+            params.vocoder.hf_repo = "ggml-org/WavTokenizer";
+            params.vocoder.hf_file = "WavTokenizer-Large-75-F16.gguf";
+        }
+    ).set_examples({LLAMA_EXAMPLE_TTS}));
+
     return ctx_arg;
 }
diff --git a/convert_hf_to_gguf.py b/convert_hf_to_gguf.py
index 4a0b00f69..76ab11ebe 100755
--- a/convert_hf_to_gguf.py
+++ b/convert_hf_to_gguf.py
@@ -2200,6 +2200,15 @@ class Phi3MiniModel(Model):
     model_arch = gguf.MODEL_ARCH.PHI3
 
     def set_vocab(self):
+        # Phi-4 model uses GPT2Tokenizer
+        tokenizer_config_file = self.dir_model / 'tokenizer_config.json'
+        if tokenizer_config_file.is_file():
+            with open(tokenizer_config_file, "r", encoding="utf-8") as f:
+                tokenizer_config_json = json.load(f)
+                tokenizer_class = tokenizer_config_json['tokenizer_class']
+                if tokenizer_class == 'GPT2Tokenizer':
+                    return self._set_vocab_gpt2()
+
         from sentencepiece import SentencePieceProcessor
 
         tokenizer_path = self.dir_model / 'tokenizer.model'
@@ -2316,7 +2325,11 @@ class Phi3MiniModel(Model):
         self.gguf_writer.add_rope_dimension_count(rope_dims)
         self.gguf_writer.add_rope_freq_base(self.find_hparam(["rope_theta"]))
         self.gguf_writer.add_file_type(self.ftype)
-        self.gguf_writer.add_sliding_window(self.find_hparam(["sliding_window"]))
+        sliding_window = self.hparams.get("sliding_window")
+        # use zero value of sliding_window to distinguish Phi-4 from other PHI3 models
+        if sliding_window is None:
+            sliding_window = 0
+        self.gguf_writer.add_sliding_window(sliding_window)
 
     def generate_extra_tensors(self) -> Iterable[tuple[str, Tensor]]:
         n_embd = self.find_hparam(["hidden_size", "n_embd"])
@@ -2615,7 +2628,7 @@ class InternLM2Model(Model):
             return [(self.map_tensor_name(name), data_torch)]
 
 
-@Model.register("BertModel", "CamembertModel", "RobertaModel")
+@Model.register("BertModel", "CamembertModel")
 class BertModel(Model):
     model_arch = gguf.MODEL_ARCH.BERT
 
@@ -2688,6 +2701,51 @@ class BertModel(Model):
         return [(self.map_tensor_name(name), data_torch)]
 
 
+@Model.register("RobertaModel")
+class RobertaModel(BertModel):
+    model_arch = gguf.MODEL_ARCH.BERT
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # we need the pad_token_id to know how to chop down position_embd matrix
+        if (pad_token_id := self.hparams.get("pad_token_id")) is not None:
+            self._position_offset = 1 + pad_token_id
+            if "max_position_embeddings" in self.hparams:
+                self.hparams["max_position_embeddings"] -= self._position_offset
+        else:
+            self._position_offset = None
+
+    def set_vocab(self):
+        """Support BPE tokenizers for roberta models"""
+        bpe_tok_path = self.dir_model / "tokenizer.json"
+        if bpe_tok_path.exists():
+            self._set_vocab_gpt2()
+            self.gguf_writer.add_add_bos_token(True)
+            self.gguf_writer.add_add_eos_token(True)
+
+            # we need this to validate the size of the token_type embeddings
+            # though currently we are passing all zeros to the token_type embeddings
+            # "Sequence A" or "Sequence B"
+            self.gguf_writer.add_token_type_count(self.hparams.get("type_vocab_size", 1))
+
+        else:
+            return super().set_vocab()
+
+    def modify_tensors(self, data_torch: Tensor, name: str, bid: int | None) -> Iterable[tuple[str, Tensor]]:
+        # if name starts with "roberta.", remove the prefix
+        # e.g. https://huggingface.co/BAAI/bge-reranker-v2-m3/tree/main
+        if name.startswith("roberta."):
+            name = name[8:]
+
+        # position embeddings start at pad_token_id + 1, so just chop down the weight tensor
+        if name == "embeddings.position_embeddings.weight":
+            if self._position_offset is not None:
+                data_torch = data_torch[self._position_offset:,:]
+
+        return super().modify_tensors(data_torch, name, bid)
+
+
 @Model.register("NomicBertModel")
 class NomicBertModel(BertModel):
     model_arch = gguf.MODEL_ARCH.NOMIC_BERT
@@ -3007,6 +3065,9 @@ class Rwkv6Model(Model):
         if new_name.endswith("time_mix_w2.weight"):
             data_torch = data_torch.permute(0, 2, 1)
 
+        if new_name.endswith("time_mix_decay.weight") or "lerp" in new_name:
+            data_torch = data_torch.squeeze()
+
         rescale_every_n_layers = self.hparams["rescale_every"]
         if rescale_every_n_layers > 0:
             if new_name.endswith("time_mix_output.weight") or new_name.endswith("channel_mix_value.weight"):
diff --git a/examples/server/public/index.html.gz b/examples/server/public/index.html.gz
index 6a6491557..36f9c9fe9 100644
Binary files a/examples/server/public/index.html.gz and b/examples/server/public/index.html.gz differ
diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index 5ed4e8d27..fa3682a92 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -93,6 +93,7 @@ struct slot_params {
 
     std::vector<std::string> antiprompt;
     bool timings_per_token = false;
+    bool post_sampling_probs = false;
     bool ignore_eos = false;
 
     struct common_params_sampling sampling;
@@ -151,6 +152,7 @@ struct slot_params {
             {"speculative.n_min",         speculative.n_min},
             {"speculative.p_min",         speculative.p_min},
             {"timings_per_token",         timings_per_token},
+            {"post_sampling_probs",       post_sampling_probs},
         };
     }
 };
@@ -231,6 +233,7 @@ struct server_task {
         params.sampling.seed               = json_value(data, "seed",               defaults.sampling.seed);
         params.sampling.n_probs            = json_value(data, "n_probs",            defaults.sampling.n_probs);
         params.sampling.min_keep           = json_value(data, "min_keep",           defaults.sampling.min_keep);
+        params.post_sampling_probs         = json_value(data, "post_sampling_probs", defaults.post_sampling_probs);
 
         params.speculative.n_min = json_value(data, "speculative.n_min", defaults.speculative.n_min);
         params.speculative.n_max = json_value(data, "speculative.n_max", defaults.speculative.n_max);
@@ -436,36 +439,67 @@ inline std::string stop_type_to_str(stop_type type) {
 
 struct completion_token_output {
     llama_token tok;
+    float prob;
     std::string text_to_send;
-    struct token_prob {
+    struct prob_info {
         llama_token tok;
-        std::string tok_str;
+        std::string txt;
         float prob;
     };
-    std::vector<token_prob> probs;
+    std::vector<prob_info> probs;
 
-    json to_json() const {
+    json to_json(bool post_sampling_probs) const {
         json probs_for_token = json::array();
         for (const auto & p : probs) {
+            std::string txt(p.txt);
+            txt.resize(validate_utf8(txt));
             probs_for_token.push_back(json {
-                {"tok_str", p.tok_str},
-                {"prob",    p.prob},
+                {"id",      p.tok},
+                {"token",   txt},
+                {"bytes",   str_to_bytes(p.txt)},
+                {
+                    post_sampling_probs ? "prob" : "logprob",
+                    post_sampling_probs ? p.prob : logarithm(p.prob)
+                },
             });
         }
         return probs_for_token;
     }
 
-    static json probs_vector_to_json(const std::vector<completion_token_output> & probs) {
+    static json probs_vector_to_json(const std::vector<completion_token_output> & probs, bool post_sampling_probs) {
         json out = json::array();
-        for (const auto & prob : probs) {
-            const std::string tok_str = prob.text_to_send;
+        for (const auto & p : probs) {
+            std::string txt(p.text_to_send);
+            txt.resize(validate_utf8(txt));
             out.push_back(json {
-                {"content", tok_str},
-                {"probs",   prob.to_json()},
+                {"id",           p.tok},
+                {"token",        txt},
+                {"bytes",        str_to_bytes(p.text_to_send)},
+                {
+                    post_sampling_probs ? "prob" : "logprob",
+                    post_sampling_probs ? p.prob : logarithm(p.prob)
+                },
+                {
+                    post_sampling_probs ? "top_probs" : "top_logprobs",
+                    p.to_json(post_sampling_probs)
+                },
             });
         }
         return out;
     }
+
+    static float logarithm(float x) {
+        // nlohmann::json converts -inf to null, so we need to prevent that
+        return x == 0.0f ? std::numeric_limits<float>::lowest() : std::log(x);
+    }
+
+    static std::vector<unsigned char> str_to_bytes(const std::string & str) {
+        std::vector<unsigned char> bytes;
+        for (unsigned char c : str) {
+            bytes.push_back(c);
+        }
+        return bytes;
+    }
 };
 
 struct server_task_result_cmpl_final : server_task_result {
@@ -486,6 +520,7 @@ struct server_task_result_cmpl_final : server_task_result {
     std::string stopping_word;
     stop_type stop = STOP_TYPE_NONE;
 
+    bool post_sampling_probs;
     std::vector<completion_token_output> probs_output;
 
     slot_params generation_params;
@@ -530,8 +565,8 @@ struct server_task_result_cmpl_final : server_task_result {
             {"tokens_cached",       n_tokens_cached},
             {"timings",             timings.to_json()},
         };
-        if (!probs_output.empty()) {
-            res["completion_probabilities"] = completion_token_output::probs_vector_to_json(probs_output);
+        if (!stream && !probs_output.empty()) {
+            res["completion_probabilities"] = completion_token_output::probs_vector_to_json(probs_output, post_sampling_probs);
         }
         return res;
     }
@@ -542,19 +577,25 @@ struct server_task_result_cmpl_final : server_task_result {
             finish_reason = "stop";
         }
 
-        json choices = json::array({json{
+        json choice = json{
             {"finish_reason", finish_reason},
             {"index", 0},
             {"message", json {
                 {"content", content},
                 {"role",    "assistant"}
             }
-        }}});
+        }};
+
+        if (!stream && probs_output.size() > 0) {
+            choice["logprobs"] = json{
+                {"content", completion_token_output::probs_vector_to_json(probs_output, post_sampling_probs)},
+            };
+        }
 
         std::time_t t = std::time(0);
 
         json res = json {
-            {"choices", choices},
+            {"choices", json::array({choice})},
             {"created", t},
             {"model", oaicompat_model},
             {"object", "chat.completion"},
@@ -584,12 +625,14 @@ struct server_task_result_cmpl_final : server_task_result {
             finish_reason = "stop";
         }
 
-        json choices = json::array({json{{"finish_reason", finish_reason},
-                                        {"index", 0},
-                                        {"delta", json::object()}}});
+        json choice = json{
+            {"finish_reason", finish_reason},
+            {"index", 0},
+            {"delta", json::object()}
+        };
 
         json ret = json {
-            {"choices", choices},
+            {"choices", json::array({choice})},
             {"created", t},
             {"id",      oaicompat_cmpl_id},
             {"model",   oaicompat_model},
@@ -618,7 +661,8 @@ struct server_task_result_cmpl_partial : server_task_result {
     int32_t n_decoded;
     int32_t n_prompt_tokens;
 
-    std::vector<completion_token_output> probs_output;
+    bool post_sampling_probs;
+    completion_token_output prob_output;
     result_timings timings;
 
     // OAI-compat fields
@@ -655,8 +699,8 @@ struct server_task_result_cmpl_partial : server_task_result {
         if (timings.prompt_n > 0) {
             res.push_back({"timings", timings.to_json()});
         }
-        if (!probs_output.empty()) {
-            res["completion_probabilities"] = completion_token_output::probs_vector_to_json(probs_output);
+        if (!prob_output.probs.empty()) {
+            res["completion_probabilities"] = completion_token_output::probs_vector_to_json({prob_output}, post_sampling_probs);
         }
         return res;
     }
@@ -708,6 +752,14 @@ struct server_task_result_cmpl_partial : server_task_result {
             }});
         }
 
+        GGML_ASSERT(choices.size() >= 1);
+
+        if (prob_output.probs.size() > 0) {
+            choices[0]["logprobs"] = json{
+                {"content", completion_token_output::probs_vector_to_json({prob_output}, post_sampling_probs)},
+            };
+        }
+
         json ret = json {
             {"choices", choices},
             {"created", t},
@@ -1001,7 +1053,6 @@ struct server_slot {
 
     // stats
     size_t n_sent_text        = 0; // number of sent text character
-    size_t n_sent_token_probs = 0;
 
     int64_t t_start_process_prompt;
     int64_t t_start_generation;
@@ -1023,7 +1074,6 @@ struct server_slot {
         stopping_word      = "";
         n_past             = 0;
         n_sent_text        = 0;
-        n_sent_token_probs = 0;
         task_type          = SERVER_TASK_TYPE_COMPLETION;
 
         generated_tokens.clear();
@@ -1764,7 +1814,7 @@ struct server_context {
 
     bool process_token(completion_token_output & result, server_slot & slot) {
         // remember which tokens were sampled - used for repetition penalties during sampling
-        const std::string token_str = common_token_to_piece(ctx, result.tok, params_base.special);
+        const std::string token_str = result.text_to_send;
         slot.sampled = result.tok;
 
         slot.generated_text += token_str;
@@ -1774,26 +1824,7 @@ struct server_context {
         slot.has_next_token = true;
 
         // check if there is incomplete UTF-8 character at the end
-        bool incomplete = false;
-        for (unsigned i = 1; i < 5 && i <= slot.generated_text.size(); ++i) {
-            unsigned char c = slot.generated_text[slot.generated_text.size() - i];
-            if ((c & 0xC0) == 0x80) {
-                // continuation byte: 10xxxxxx
-                continue;
-            }
-            if ((c & 0xE0) == 0xC0) {
-                // 2-byte character: 110xxxxx ...
-                incomplete = i < 2;
-            } else if ((c & 0xF0) == 0xE0) {
-                // 3-byte character: 1110xxxx ...
-                incomplete = i < 3;
-            } else if ((c & 0xF8) == 0xF0) {
-                // 4-byte character: 11110xxx ...
-                incomplete = i < 4;
-            }
-            // else 1-byte character or invalid byte
-            break;
-        }
+        bool incomplete = validate_utf8(slot.generated_text) < slot.generated_text.size();
 
         // search stop word and delete it
         if (!incomplete) {
@@ -1923,6 +1954,55 @@ struct server_context {
         return slot.has_next_token; // continue
     }
 
+    void populate_token_probs(const server_slot & slot, completion_token_output & result, bool post_sampling, bool special, int idx) {
+        size_t n_probs = slot.params.sampling.n_probs;
+        size_t n_vocab = llama_n_vocab(llama_get_model(ctx));
+        if (post_sampling) {
+            const auto * cur_p = common_sampler_get_candidates(slot.smpl);
+            const size_t max_probs = cur_p->size;
+
+            // set probability for sampled token
+            for (size_t i = 0; i < max_probs; i++) {
+                if (cur_p->data[i].id == result.tok) {
+                    result.prob = cur_p->data[i].p;
+                    break;
+                }
+            }
+
+            // set probability for top n_probs tokens
+            result.probs.reserve(max_probs);
+            for (size_t i = 0; i < std::min(max_probs, n_probs); i++) {
+                result.probs.push_back({
+                    cur_p->data[i].id,
+                    common_detokenize(ctx, {cur_p->data[i].id}, special),
+                    cur_p->data[i].p
+                });
+            }
+        } else {
+            // TODO: optimize this with min-p optimization
+            std::vector<llama_token_data> cur = get_token_probabilities(ctx, idx);
+
+            // set probability for sampled token
+            for (size_t i = 0; i < n_vocab; i++) {
+                // set probability for sampled token
+                if (cur[i].id == result.tok) {
+                    result.prob = cur[i].p;
+                    break;
+                }
+            }
+
+            // set probability for top n_probs tokens
+            result.probs.reserve(n_probs);
+            for (size_t i = 0; i < std::min(n_vocab, n_probs); i++) {
+                result.probs.push_back({
+                    cur[i].id,
+                    common_detokenize(ctx, {cur[i].id}, special),
+                    cur[i].p
+                });
+            }
+        }
+    }
+
     void send_error(const server_task & task, const std::string & error, const enum error_type type = ERROR_TYPE_SERVER) {
         send_error(task.id, error, type);
     }
@@ -1950,8 +2030,9 @@ struct server_context {
         res->content = tkn.text_to_send;
         res->tokens  = { tkn.tok };
 
-        res->n_decoded       = slot.n_decoded;
-        res->n_prompt_tokens = slot.n_prompt_tokens;
+        res->n_decoded           = slot.n_decoded;
+        res->n_prompt_tokens     = slot.n_prompt_tokens;
+        res->post_sampling_probs = slot.params.post_sampling_probs;
 
         res->verbose           = slot.params.verbose;
         res->oaicompat         = slot.params.oaicompat;
@@ -1961,17 +2042,7 @@ struct server_context {
 
         // populate res.probs_output
         if (slot.params.sampling.n_probs > 0) {
-            const llama_tokens to_send_toks = common_tokenize(ctx, tkn.text_to_send, false);
-
-            const size_t probs_pos      = std::min(slot.n_sent_token_probs,                       slot.generated_token_probs.size());
-            const size_t probs_stop_pos = std::min(slot.n_sent_token_probs + to_send_toks.size(), slot.generated_token_probs.size());
-
-            std::vector<completion_token_output> probs_output;
-            if (probs_pos < probs_stop_pos) {
-                res->probs_output = std::vector<completion_token_output>(
-                        slot.generated_token_probs.begin() + probs_pos,
-                        slot.generated_token_probs.begin() + probs_stop_pos);
-            }
+            res->prob_output = tkn; // copy the token probs
         }
 
         // populate timings if this is final response or timings_per_token is enabled
@@ -1993,13 +2064,14 @@ struct server_context {
         res->timings         = slot.get_timings();
         res->prompt          = common_detokenize(ctx, slot.prompt_tokens, true);
 
-        res->truncated       = slot.truncated;
-        res->n_decoded       = slot.n_decoded;
-        res->n_prompt_tokens = slot.n_prompt_tokens;
-        res->n_tokens_cached = slot.n_past;
-        res->has_new_line    = slot.has_new_line;
-        res->stopping_word   = slot.stopping_word;
-        res->stop            = slot.stop;
+        res->truncated           = slot.truncated;
+        res->n_decoded           = slot.n_decoded;
+        res->n_prompt_tokens     = slot.n_prompt_tokens;
+        res->n_tokens_cached     = slot.n_past;
+        res->has_new_line        = slot.has_new_line;
+        res->stopping_word       = slot.stopping_word;
+        res->stop                = slot.stop;
+        res->post_sampling_probs = slot.params.post_sampling_probs;
 
         res->verbose           = slot.params.verbose;
         res->stream            = slot.params.stream;
@@ -2796,7 +2868,9 @@ struct server_context {
                     continue; // continue loop of slots
                 }
 
-                llama_token id = common_sampler_sample(slot.smpl, ctx, slot.i_batch - i);
+                const int tok_idx = slot.i_batch - i;
+
+                llama_token id = common_sampler_sample(slot.smpl, ctx, tok_idx);
 
                 slot.i_batch = -1;
 
@@ -2815,17 +2889,12 @@ struct server_context {
                 slot.t_token_generation = (t_current - slot.t_start_generation) / 1e3;
 
                 completion_token_output result;
-                result.tok = id;
+                result.tok          = id;
+                result.text_to_send = common_token_to_piece(ctx, result.tok, params_base.special);
+                result.prob         = 1.0f; // TODO: set it here instead of doing inside populate_token_probs
 
-                const auto * cur_p = common_sampler_get_candidates(slot.smpl);
-
-                for (size_t i = 0; i < (size_t) slot.params.sampling.n_probs; ++i) {
-                    auto tok_id = cur_p->data[i].id;
-                    result.probs.push_back({
-                        tok_id,
-                        tokens_to_output_formatted_string(ctx, tok_id),
-                        i >= cur_p->size ? 0.0f : cur_p->data[i].p,
-                    });
+                if (slot.params.sampling.n_probs > 0) {
+                    populate_token_probs(slot, result, slot.params.post_sampling_probs, params_base.special, tok_idx);
                 }
 
                 if (!process_token(result, slot)) {
@@ -2909,7 +2978,11 @@ struct server_context {
                 for (size_t i = 0; i < ids.size(); ++i) {
                     completion_token_output result;
 
-                    result.tok = ids[i];
+                    result.tok          = ids[i];
+                    result.text_to_send = common_token_to_piece(ctx, result.tok, params_base.special);
+                    result.prob         = 1.0f; // set later
+
+                    // TODO: set result.probs
 
                     if (!process_token(result, slot)) {
                         // release slot because of stop condition
diff --git a/examples/server/tests/unit/test_chat_completion.py b/examples/server/tests/unit/test_chat_completion.py
index 6573cc17f..0fa1a17c1 100644
--- a/examples/server/tests/unit/test_chat_completion.py
+++ b/examples/server/tests/unit/test_chat_completion.py
@@ -92,7 +92,6 @@ def test_chat_completion_with_openai_library():
         seed=42,
         temperature=0.8,
     )
-    print(res)
     assert res.choices[0].finish_reason == "length"
     assert res.choices[0].message.content is not None
     assert match_regex("(Suddenly)+", res.choices[0].message.content)
@@ -163,3 +162,64 @@ def test_chat_completion_with_timings_per_token():
         assert "predicted_per_second" in data["timings"]
         assert "predicted_n" in data["timings"]
         assert data["timings"]["predicted_n"] <= 10
+
+
+def test_logprobs():
+    global server
+    server.start()
+    client = OpenAI(api_key="dummy", base_url=f"http://{server.server_host}:{server.server_port}")
+    res = client.chat.completions.create(
+        model="gpt-3.5-turbo-instruct",
+        temperature=0.0,
+        messages=[
+            {"role": "system", "content": "Book"},
+            {"role": "user", "content": "What is the best book"},
+        ],
+        max_tokens=5,
+        logprobs=True,
+        top_logprobs=10,
+    )
+    output_text = res.choices[0].message.content
+    aggregated_text = ''
+    assert res.choices[0].logprobs is not None
+    assert res.choices[0].logprobs.content is not None
+    for token in res.choices[0].logprobs.content:
+        aggregated_text += token.token
+        assert token.logprob <= 0.0
+        assert token.bytes is not None
+        assert len(token.top_logprobs) > 0
+    assert aggregated_text == output_text
+
+
+def test_logprobs_stream():
+    global server
+    server.start()
+    client = OpenAI(api_key="dummy", base_url=f"http://{server.server_host}:{server.server_port}")
+    res = client.chat.completions.create(
+        model="gpt-3.5-turbo-instruct",
+        temperature=0.0,
+        messages=[
+            {"role": "system", "content": "Book"},
+            {"role": "user", "content": "What is the best book"},
+        ],
+        max_tokens=5,
+        logprobs=True,
+        top_logprobs=10,
+        stream=True,
+    )
+    output_text = ''
+    aggregated_text = ''
+    for data in res:
+        choice = data.choices[0]
+        if choice.finish_reason is None:
+            if choice.delta.content:
+                output_text += choice.delta.content
+            assert choice.logprobs is not None
+            assert choice.logprobs.content is not None
+            for token in choice.logprobs.content:
+                aggregated_text += token.token
+                assert token.logprob <= 0.0
+                assert token.bytes is not None
+                assert token.top_logprobs is not None
+                assert len(token.top_logprobs) > 0
+    assert aggregated_text == output_text
diff --git a/examples/server/tests/unit/test_completion.py b/examples/server/tests/unit/test_completion.py
index 36aee57dd..b88d45f18 100644
--- a/examples/server/tests/unit/test_completion.py
+++ b/examples/server/tests/unit/test_completion.py
@@ -270,9 +270,68 @@ def test_n_probs():
     assert "completion_probabilities" in res.body
     assert len(res.body["completion_probabilities"]) == 5
     for tok in res.body["completion_probabilities"]:
-        assert "probs" in tok
-        assert len(tok["probs"]) == 10
-        for prob in tok["probs"]:
-            assert "prob" in prob
-            assert "tok_str" in prob
-            assert 0.0 <= prob["prob"] <= 1.0
+        assert "id" in tok and tok["id"] > 0
+        assert "token" in tok and type(tok["token"]) == str
+        assert "logprob" in tok and tok["logprob"] <= 0.0
+        assert "bytes" in tok and type(tok["bytes"]) == list
+        assert len(tok["top_logprobs"]) == 10
+        for prob in tok["top_logprobs"]:
+            assert "id" in prob and prob["id"] > 0
+            assert "token" in prob and type(prob["token"]) == str
+            assert "logprob" in prob and prob["logprob"] <= 0.0
+            assert "bytes" in prob and type(prob["bytes"]) == list
+
+
+def test_n_probs_stream():
+    global server
+    server.start()
+    res = server.make_stream_request("POST", "/completion", data={
+        "prompt": "I believe the meaning of life is",
+        "n_probs": 10,
+        "temperature": 0.0,
+        "n_predict": 5,
+        "stream": True,
+    })
+    for data in res:
+        if data["stop"] == False:
+            assert "completion_probabilities" in data
+            assert len(data["completion_probabilities"]) == 1
+            for tok in data["completion_probabilities"]:
+                assert "id" in tok and tok["id"] > 0
+                assert "token" in tok and type(tok["token"]) == str
+                assert "logprob" in tok and tok["logprob"] <= 0.0
+                assert "bytes" in tok and type(tok["bytes"]) == list
+                assert len(tok["top_logprobs"]) == 10
+                for prob in tok["top_logprobs"]:
+                    assert "id" in prob and prob["id"] > 0
+                    assert "token" in prob and type(prob["token"]) == str
+                    assert "logprob" in prob and prob["logprob"] <= 0.0
+                    assert "bytes" in prob and type(prob["bytes"]) == list
+
+
+def test_n_probs_post_sampling():
+    global server
+    server.start()
+    res = server.make_request("POST", "/completion", data={
+        "prompt": "I believe the meaning of life is",
+        "n_probs": 10,
+        "temperature": 0.0,
+        "n_predict": 5,
+        "post_sampling_probs": True,
+    })
+    assert res.status_code == 200
+    assert "completion_probabilities" in res.body
+    assert len(res.body["completion_probabilities"]) == 5
+    for tok in res.body["completion_probabilities"]:
+        assert "id" in tok and tok["id"] > 0
+        assert "token" in tok and type(tok["token"]) == str
+        assert "prob" in tok and 0.0 < tok["prob"] <= 1.0
+        assert "bytes" in tok and type(tok["bytes"]) == list
+        assert len(tok["top_probs"]) == 10
+        for prob in tok["top_probs"]:
+            assert "id" in prob and prob["id"] > 0
+            assert "token" in prob and type(prob["token"]) == str
+            assert "prob" in prob and 0.0 <= prob["prob"] <= 1.0
+            assert "bytes" in prob and type(prob["bytes"]) == list
+        # because the test model usually output token with either 100% or 0% probability, we need to check all the top_probs
+        assert any(prob["prob"] == 1.0 for prob in tok["top_probs"])
diff --git a/examples/server/tests/unit/test_embedding.py b/examples/server/tests/unit/test_embedding.py
index e32d74582..43e372fc7 100644
--- a/examples/server/tests/unit/test_embedding.py
+++ b/examples/server/tests/unit/test_embedding.py
@@ -50,6 +50,8 @@ def test_embedding_multiple():
 @pytest.mark.parametrize(
     "input,is_multi_prompt",
     [
+        # do not crash on empty input
+        ("", False),
         # single prompt
         ("string", False),
         ([12, 34, 56], False),
@@ -103,6 +105,7 @@ def test_embedding_pooling_none_oai():
 
     # /v1/embeddings does not support pooling type 'none'
     assert res.status_code == 400
+    assert "error" in res.body
 
 
 def test_embedding_openai_library_single():
diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index ffdffe904..94bb285b6 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -171,6 +171,36 @@ static std::vector<llama_tokens> tokenize_input_prompts(llama_context * ctx, con
     return result;
 }
 
+// return the last index of character that can form a valid string
+// if the last character is potentially cut in half, return the index before the cut
+// if validate_utf8(text) == text.size(), then the whole text is valid utf8
+static size_t validate_utf8(const std::string& text) {
+    size_t len = text.size();
+    if (len == 0) return 0;
+
+    // Check the last few bytes to see if a multi-byte character is cut off
+    for (size_t i = 1; i <= 4 && i <= len; ++i) {
+        unsigned char c = text[len - i];
+        // Check for start of a multi-byte sequence from the end
+        if ((c & 0xE0) == 0xC0) {
+            // 2-byte character start: 110xxxxx
+            // Needs at least 2 bytes
+            if (i < 2) return len - i;
+        } else if ((c & 0xF0) == 0xE0) {
+            // 3-byte character start: 1110xxxx
+            // Needs at least 3 bytes
+            if (i < 3) return len - i;
+        } else if ((c & 0xF8) == 0xF0) {
+            // 4-byte character start: 11110xxx
+            // Needs at least 4 bytes
+            if (i < 4) return len - i;
+        }
+    }
+
+    // If no cut-off multi-byte character is found, return full length
+    return len;
+}
+
 //
 // template utils
 //
@@ -671,3 +701,33 @@ static json format_logit_bias(const std::vector<llama_logit_bias> & logit_bias)
 static std::string safe_json_to_str(json data) {
     return data.dump(-1, ' ', false, json::error_handler_t::replace);
 }
+
+static std::vector<llama_token_data> get_token_probabilities(llama_context * ctx, int idx) {
+    std::vector<llama_token_data> cur;
+    const auto * logits = llama_get_logits_ith(ctx, idx);
+    const int n_vocab = llama_n_vocab(llama_get_model(ctx));
+
+    cur.resize(n_vocab);
+    for (llama_token token_id = 0; token_id < n_vocab; token_id++) {
+        cur[token_id] = llama_token_data{token_id, logits[token_id], 0.0f};
+    }
+
+    // sort tokens by logits
+    std::sort(cur.begin(), cur.end(), [](const llama_token_data & a, const llama_token_data & b) {
+        return a.logit > b.logit;
+    });
+
+    // apply softmax
+    float max_l = cur[0].logit;
+    float cum_sum = 0.0f;
+    for (size_t i = 0; i < cur.size(); ++i) {
+        float p = expf(cur[i].logit - max_l);
+        cur[i].p = p;
+        cum_sum += p;
+    }
+    for (size_t i = 0; i < cur.size(); ++i) {
+        cur[i].p /= cum_sum;
+    }
+
+    return cur;
+}
diff --git a/examples/server/webui/src/main.js b/examples/server/webui/src/main.js
index 997ab0ff5..358a40628 100644
--- a/examples/server/webui/src/main.js
+++ b/examples/server/webui/src/main.js
@@ -13,7 +13,7 @@ import hljs from './highlight-config';
 import daisyuiThemes from 'daisyui/src/theming/themes';
 
 // ponyfill for missing ReadableStream asyncIterator on Safari
-import { asyncIterator } from "@sec-ant/readable-stream/ponyfill/asyncIterator";
+import { asyncIterator } from '@sec-ant/readable-stream/ponyfill/asyncIterator';
 
 const isDev = import.meta.env.MODE === 'development';
 
@@ -22,7 +22,22 @@ const isString = (x) => !!x.toLowerCase;
 const isBoolean = (x) => x === true || x === false;
 const isNumeric = (n) => !isString(n) && !isNaN(n) && !isBoolean(n);
 const escapeAttr = (str) => str.replace(/>/g, '&gt;').replace(/"/g, '&quot;');
-const copyStr = (str) => navigator.clipboard.writeText(str);
+const copyStr = (textToCopy) => {
+  // Navigator clipboard api needs a secure context (https)
+  if (navigator.clipboard && window.isSecureContext) {
+    navigator.clipboard.writeText(textToCopy);
+  } else {
+    // Use the 'out of viewport hidden text area' trick
+    const textArea = document.createElement('textarea');
+    textArea.value = textToCopy;
+    // Move textarea out of the viewport so it's not visible
+    textArea.style.position = 'absolute';
+    textArea.style.left = '-999999px';
+    document.body.prepend(textArea);
+    textArea.select();
+    document.execCommand('copy');
+  }
+};
 
 // constants
 const BASE_URL = isDev
@@ -130,9 +145,9 @@ const VueMarkdown = defineComponent(
     };
     window.copyStr = copyStr;
     const content = computed(() => md.value.render(props.source));
-    return () => h("div", { innerHTML: content.value });
+    return () => h('div', { innerHTML: content.value });
   },
-  { props: ["source"] }
+  { props: ['source'] }
 );
 
 // input field to be used by settings modal
diff --git a/ggml/src/ggml-cpu/ggml-cpu-aarch64.cpp b/ggml/src/ggml-cpu/ggml-cpu-aarch64.cpp
index 84eb03d32..a7bca08e3 100644
--- a/ggml/src/ggml-cpu/ggml-cpu-aarch64.cpp
+++ b/ggml/src/ggml-cpu/ggml-cpu-aarch64.cpp
@@ -579,21 +579,21 @@ static void ggml_gemv_q4_0_4x4_q8_0(int n, float * GGML_RESTRICT s, size_t bs, c
 
 #if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_DOTPROD)
     if (ggml_cpu_has_neon() && ggml_cpu_has_dotprod()) {
-        const block_q4_0x4 * b_ptr = (const block_q4_0x4 *)vx;
+        const block_q4_0x4 * b_ptr = (const block_q4_0x4 *) vx;
 
         for (int c = 0; c < nc; c += ncols_interleaved) {
-            const block_q8_0 * a_ptr = (const block_q8_0 *)vy;
+            const block_q8_0 * a_ptr = (const block_q8_0 *) vy;
             float32x4_t acc = vdupq_n_f32(0);
             for (int b = 0; b < nb; b++) {
-                int8x16_t b0 = vld1q_s8((const int8_t *)b_ptr->qs);
-                int8x16_t b1 = vld1q_s8((const int8_t *)b_ptr->qs + 16);
-                int8x16_t b2 = vld1q_s8((const int8_t *)b_ptr->qs + 32);
-                int8x16_t b3 = vld1q_s8((const int8_t *)b_ptr->qs + 48);
-                float16x4_t bd = vld1_f16((const __fp16 *)b_ptr->d);
+                int8x16_t b0 = vld1q_s8((const int8_t *) b_ptr->qs);
+                int8x16_t b1 = vld1q_s8((const int8_t *) b_ptr->qs + 16);
+                int8x16_t b2 = vld1q_s8((const int8_t *) b_ptr->qs + 32);
+                int8x16_t b3 = vld1q_s8((const int8_t *) b_ptr->qs + 48);
+                float16x4_t bd = vld1_f16((const __fp16 *) b_ptr->d);
 
                 int8x16_t a0 = vld1q_s8(a_ptr->qs);
                 int8x16_t a1 = vld1q_s8(a_ptr->qs + qk/2);
-                float16x4_t ad = vld1_dup_f16((const __fp16 *)&a_ptr->d);
+                float16x4_t ad = vld1_dup_f16((const __fp16 *) &a_ptr->d);
 
                 int32x4_t ret = vdupq_n_s32(0);
 
@@ -662,72 +662,52 @@ static void ggml_gemv_q4_0_4x8_q8_0(int n, float * GGML_RESTRICT s, size_t bs, c
     UNUSED(ncols_interleaved);
     UNUSED(blocklen);
 
-#if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_MATMUL_INT8)
-    if (ggml_cpu_has_neon() && ggml_cpu_has_matmul_int8()) {
-        const void * b_ptr = vx;
-        const void * a_ptr = vy;
-        float * res_ptr = s;
+#if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_DOTPROD)
+    if (ggml_cpu_has_neon() && ggml_cpu_has_dotprod()) {
+        const block_q4_0x4 * b_ptr = (const block_q4_0x4 *) vx;
 
-        __asm__ __volatile__(
-            "movi v2.16b, #0x4\n"
-            "movi v1.16b, #0xf0\n"
-            "add %x[b_ptr], %x[b_ptr], #0x8\n"
-            "1:"  // Column loop
-            "add x23, %x[a_ptr], #0x2\n"
-            "movi v0.16b, #0x0\n"
-            "mov x22, %x[nb]\n"
-            "2:"  // Block loop
-            "ldr q31, [%x[b_ptr], #0x0]\n"
-            "ldr q30, [%x[b_ptr], #0x10]\n"
-            "mov x21, x23\n"
-            "movi v29.4s, #0x0\n"
-            "ldr q28, [%x[b_ptr], #0x20]\n"
-            "ldr q27, [%x[b_ptr], #0x30]\n"
-            "movi v26.4s, #0x0\n"
-            "sub x20, x23, #0x2\n"
-            "ld1r { v25.8h }, [x20]\n"
-            "ldr q24, [%x[b_ptr], #-0x8]\n"
-            "sub x22, x22, #0x1\n"
-            "add x23, x23, #0x22\n"
-            "ld1r { v23.2d }, [x21], #0x8\n"
-            "sshl v22.16b, v31.16b, v2.16b\n"
-            "sshl v16.16b, v30.16b, v2.16b\n"
-            "add %x[b_ptr], %x[b_ptr], #0x48\n"
-            "ld1r { v21.2d }, [x21], #0x8\n"
-            "sshl v20.16b, v28.16b, v2.16b\n"
-            "sshl v19.16b, v27.16b, v2.16b\n"
-            "ld1r { v18.2d }, [x21], #0x8\n"
-            "ld1r { v17.2d }, [x21], #0x8\n"
-            "and v31.16b, v31.16b, v1.16b\n"
-            "and v30.16b, v30.16b, v1.16b\n"
-            ".inst 0x4e9796dd  // sdot v29.4s, v22.16b, v23.16b\n"
-            ".inst 0x4e97961a  // sdot v26.4s, v16.16b, v23.16b\n"
-            "and v28.16b, v28.16b, v1.16b\n"
-            "and v27.16b, v27.16b, v1.16b\n"
-            "fcvtl v25.4s, v25.4h\n"
-            "fcvtl v16.4s, v24.4h\n"
-            ".inst 0x4e95969d  // sdot v29.4s, v20.16b, v21.16b\n"
-            ".inst 0x4e95967a  // sdot v26.4s, v19.16b, v21.16b\n"
-            "fmul v16.4s, v16.4s, v25.4s\n"
-            ".inst 0x4e9297fd  // sdot v29.4s, v31.16b, v18.16b\n"
-            ".inst 0x4e9297da  // sdot v26.4s, v30.16b, v18.16b\n"
-            ".inst 0x4e91979d  // sdot v29.4s, v28.16b, v17.16b\n"
-            ".inst 0x4e91977a  // sdot v26.4s, v27.16b, v17.16b\n"
-            "addp v29.4s, v29.4s, v26.4s\n"
-            "scvtf v29.4s, v29.4s, #0x4\n"
-            "fmla v0.4s, v29.4s, v16.4s\n"
-            "cbnz x22, 2b\n"
-            "sub %x[nc], %x[nc], #0x4\n"
-            "str q0, [%x[res_ptr], #0x0]\n"
-            "add %x[res_ptr], %x[res_ptr], #0x10\n"
-            "cbnz %x[nc], 1b\n"
-            : [b_ptr] "+&r" (b_ptr), [res_ptr] "+&r" (res_ptr), [nc] "+&r" (nc)
-            : [a_ptr] "r" (a_ptr), [nb] "r" (nb)
-            : "memory", "v0", "v1", "v2", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x20", "x21", "x22", "x23"
-        );
+        for (int c = 0; c < nc; c += ncols_interleaved) {
+            const block_q8_0 * a_ptr = (const block_q8_0 *) vy;
+            float32x4_t acc = vdupq_n_f32(0);
+            for (int b = 0; b < nb; b++) {
+                int8x16_t b0 = vld1q_s8((const int8_t *) b_ptr->qs);
+                int8x16_t b1 = vld1q_s8((const int8_t *) b_ptr->qs + 16);
+                int8x16_t b2 = vld1q_s8((const int8_t *) b_ptr->qs + 32);
+                int8x16_t b3 = vld1q_s8((const int8_t *) b_ptr->qs + 48);
+                float16x4_t bd = vld1_f16((const __fp16 *) b_ptr->d);
+
+                int8x16_t a0 = (int8x16_t) vld1q_dup_s64((const int64_t *) a_ptr->qs);
+                int8x16_t a1 = (int8x16_t) vld1q_dup_s64((const int64_t *) a_ptr->qs + 1);
+                int8x16_t a2 = (int8x16_t) vld1q_dup_s64((const int64_t *) a_ptr->qs + 2);
+                int8x16_t a3 = (int8x16_t) vld1q_dup_s64((const int64_t *) a_ptr->qs + 3);
+                float16x4_t ad = vld1_dup_f16((const __fp16 *) &a_ptr->d);
+
+                int32x4_t ret0 = vdupq_n_s32(0);
+                int32x4_t ret1 = vdupq_n_s32(0);
+
+                ret0 = vdotq_s32(ret0, b0 << 4, a0);
+                ret1 = vdotq_s32(ret1, b1 << 4, a0);
+                ret0 = vdotq_s32(ret0, b2 << 4, a1);
+                ret1 = vdotq_s32(ret1, b3 << 4, a1);
+
+                ret0 = vdotq_s32(ret0, b0 & 0xf0U, a2);
+                ret1 = vdotq_s32(ret1, b1 & 0xf0U, a2);
+                ret0 = vdotq_s32(ret0, b2 & 0xf0U, a3);
+                ret1 = vdotq_s32(ret1, b3 & 0xf0U, a3);
+
+                int32x4_t ret = vpaddq_s32(ret0, ret1);
+
+                acc = vfmaq_f32(acc, vcvtq_n_f32_s32(ret, 4),
+                        vmulq_f32(vcvt_f32_f16(ad), vcvt_f32_f16(bd)));
+                a_ptr++;
+                b_ptr++;
+            }
+            vst1q_f32(s, acc);
+            s += ncols_interleaved;
+        }
         return;
     }
-#endif // #if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_MATMUL_INT8)
+#endif // #if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_DOTPROD)
     float sumf[4];
     int sumi;
 
diff --git a/ggml/src/ggml-sycl/common.cpp b/ggml/src/ggml-sycl/common.cpp
index a9ee40491..88314a5cd 100644
--- a/ggml/src/ggml-sycl/common.cpp
+++ b/ggml/src/ggml-sycl/common.cpp
@@ -11,6 +11,8 @@
 //
 
 #include "common.hpp"
+
+#include "ggml-backend-impl.h"
 #include "ggml-impl.h"
 
 int get_current_device_id() {
@@ -65,9 +67,9 @@ void ggml_sycl_op_flatten(ggml_backend_sycl_context & ctx, const ggml_tensor *sr
                                  const ggml_sycl_op_flatten_t op) try {
 
     const bool use_src1 = src1 != nullptr;
-
-    GGML_ASSERT(!use_src1 || src1->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
-    GGML_ASSERT(              dst->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
+    if(use_src1)
+      GGML_ASSERT(strcmp(src1->buffer->buft->iface.get_name(src1->buffer->buft), GGML_SYCL_NAME "_Split") != 0);
+    GGML_ASSERT(strcmp(dst->buffer->buft->iface.get_name(dst->buffer->buft), GGML_SYCL_NAME "_Split") != 0);
 
     // dd = data device
     float * src0_ddf = (float *) src0->data;
diff --git a/ggml/src/ggml-sycl/common.hpp b/ggml/src/ggml-sycl/common.hpp
index c1582f610..62b4cea3a 100644
--- a/ggml/src/ggml-sycl/common.hpp
+++ b/ggml/src/ggml-sycl/common.hpp
@@ -26,7 +26,11 @@
 
 #define GGML_COMMON_DECL_SYCL
 #define GGML_COMMON_IMPL_SYCL
+/* suppress warning spam */
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wnested-anon-types"
 #include "ggml-common.h"
+#pragma clang diagnostic pop
 
 void* ggml_sycl_host_malloc(size_t size);
 void ggml_sycl_host_free(void* ptr);
diff --git a/ggml/src/ggml-sycl/ggml-sycl.cpp b/ggml/src/ggml-sycl/ggml-sycl.cpp
index 84f1328e7..312ccfeb8 100644
--- a/ggml/src/ggml-sycl/ggml-sycl.cpp
+++ b/ggml/src/ggml-sycl/ggml-sycl.cpp
@@ -288,10 +288,8 @@ ggml_backend_sycl_buffer_init_tensor(ggml_backend_buffer_t buffer,
                                      ggml_tensor *tensor) try {
     ggml_backend_sycl_buffer_context * ctx = (ggml_backend_sycl_buffer_context *)buffer->context;
 
-    if (tensor->view_src != NULL && tensor->view_offs == 0) {
+    if (tensor->view_src != NULL) {
         assert(tensor->view_src->buffer->buft == buffer->buft);
-        tensor->backend = tensor->view_src->backend;
-        tensor->extra = tensor->view_src->extra;
         return;
     }
 
@@ -539,7 +537,7 @@ ggml_backend_buffer_type_t ggml_backend_sycl_buffer_type(int device) {
     auto dev_count = ggml_backend_sycl_get_device_count();
 
     if (device>=dev_count or device<0) {
-        printf("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
+        GGML_LOG_ERROR("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
             device, dev_count-1);
         GGML_ASSERT(device<dev_count);
     }
@@ -567,7 +565,7 @@ ggml_backend_buffer_type_t ggml_backend_sycl_buffer_type(ggml_backend_sycl_conte
 
     int device = ctx->device;
     if (device>=ggml_sycl_info().device_count or device<0) {
-        printf("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
+        GGML_LOG_ERROR("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
             device, ggml_sycl_info().device_count-1);
         GGML_ASSERT(device<ggml_sycl_info().device_count);
     }
@@ -746,7 +744,7 @@ ggml_backend_sycl_split_buffer_init_tensor(ggml_backend_buffer_t buffer,
             size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
         }
 
-        // FIXME: do not crash if cudaMalloc fails
+        // FIXME: do not crash if SYCL Buffer alloc fails
         // currently, init_tensor cannot fail, it needs to be fixed in ggml-backend first
         ggml_sycl_set_device(i);
         const queue_ptr stream = ctx->streams[i];
@@ -788,7 +786,6 @@ ggml_backend_sycl_split_buffer_init_tensor(ggml_backend_buffer_t buffer,
                 CHECK_TRY_ERROR(extra->events[i][is] = new sycl::event()));
         }
     }
-    tensor->backend = GGML_BACKEND_TYPE_GPU_SPLIT;
     tensor->extra = extra;
 }
 catch (sycl::exception const &exc) {
@@ -2349,12 +2346,22 @@ static dpct::err0 ggml_sycl_cpy_tensor_2d(void *dst,
 
     dpct::memcpy_direction kind;
     char * src_ptr;
-    if (src->backend == GGML_BACKEND_TYPE_CPU) {
+    if (ggml_backend_buffer_is_host(src->buffer)) {
         kind = dpct::host_to_device;
+        //GGML_SYCL_DEBUG("%s: Host buffer type src tensor\n", __func__);
         src_ptr = (char *) src->data;
         // GGML_SYCL_DEBUG("ggml_sycl_cpy_tensor_2d  GGML_BACKEND_TYPE_CPU src_ptr %p\n", src_ptr);
-    } else if (src->backend == GGML_BACKEND_TYPE_GPU || src->backend == GGML_BACKEND_TYPE_GPU_SPLIT) {
-        GGML_ASSERT(src->backend != GGML_BACKEND_TYPE_GPU_SPLIT || (i1_low == 0 && i1_high == src->ne[1]));
+    } else if (ggml_backend_buffer_is_sycl(src->buffer)) {
+        // If buffer is a SYCL buffer
+        //GGML_SYCL_DEBUG("%s: SYCL buffer type src tensor\n", __func__);
+        kind    = dpct::device_to_device;
+        src_ptr = (char *) src->data;
+    } else if (ggml_backend_buffer_is_sycl_split(src->buffer)) {
+        /*
+        If buffer is a SYCL split buffer
+        */
+        //GGML_SYCL_DEBUG("%s: Split buffer type src tensor\n", __func__);
+        GGML_ASSERT(i1_low == 0 && i1_high == src->ne[1]);
         kind = dpct::device_to_device;
         ggml_tensor_extra_gpu * extra = (ggml_tensor_extra_gpu *) src->extra;
         int id;
@@ -2857,8 +2864,8 @@ static void ggml_sycl_op_mul_mat(ggml_backend_sycl_context & ctx, const ggml_ten
     const int nb2 = dst->nb[2];
     const int nb3 = dst->nb[3];
 
-    GGML_ASSERT(dst->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
-    GGML_ASSERT(src1->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
+    GGML_ASSERT(!ggml_backend_buffer_is_sycl_split(dst->buffer));
+    GGML_ASSERT(!ggml_backend_buffer_is_sycl_split(src1->buffer));
     GGML_ASSERT(src1->type == GGML_TYPE_F32 || (src1->ne[2] == 1 && src1->ne[3] == 1));
 
     GGML_ASSERT(ne12 >= ne02 && ne12 % ne02 == 0);
@@ -2878,7 +2885,7 @@ static void ggml_sycl_op_mul_mat(ggml_backend_sycl_context & ctx, const ggml_ten
 
     int64_t src1_padded_col_size = GGML_PAD(ne10, MATRIX_ROW_PADDING);
 
-    const bool split = src0->backend == GGML_BACKEND_TYPE_GPU_SPLIT;
+    const bool split = ggml_backend_buffer_is_sycl_split(src0->buffer);
     GGML_ASSERT(!(split && ne02 > 1));
     GGML_ASSERT(!(split && ne03 > 1));
     GGML_ASSERT(!(split && ne02 < ne12));
@@ -3198,7 +3205,7 @@ static void ggml_sycl_mul_mat_vec_p021(ggml_backend_sycl_context & ctx, const gg
                                        const ggml_tensor *src1,
                                        ggml_tensor *dst) try {
     GGML_ASSERT(ggml_is_permuted(src0) && ggml_is_permuted(src1));
-    GGML_ASSERT(src0->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
+    GGML_ASSERT(!ggml_backend_buffer_is_sycl_split(src0->buffer));
     GGML_ASSERT(src0->nb[0] <= src0->nb[1] && src0->nb[2] <= src0->nb[3]); // 0213 permutation
     GGML_ASSERT(src1->nb[0] <= src1->nb[1] && src1->nb[2] <= src1->nb[3]); // 0213 permutation
     GGML_ASSERT(src0->type == GGML_TYPE_F16);
@@ -3231,7 +3238,7 @@ static void ggml_sycl_mul_mat_vec_nc(ggml_backend_sycl_context & ctx, const ggml
     GGML_ASSERT(!ggml_is_transposed(src0));
     GGML_ASSERT(!ggml_is_transposed(src1));
     GGML_ASSERT(!ggml_is_permuted(src0));
-    GGML_ASSERT(src0->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
+    GGML_ASSERT(!ggml_backend_buffer_is_sycl_split(src0->buffer));
     GGML_ASSERT(src0->type == GGML_TYPE_F16);
     GGML_ASSERT(src1->type == GGML_TYPE_F32);
 
@@ -3293,7 +3300,7 @@ static void ggml_sycl_mul_mat_batched_sycl(ggml_backend_sycl_context & ctx,
                                              ggml_tensor *dst) try {
     GGML_ASSERT(!ggml_is_transposed(src0));
     GGML_ASSERT(!ggml_is_transposed(src1));
-    GGML_ASSERT(src0->backend != GGML_BACKEND_TYPE_GPU_SPLIT);
+    GGML_ASSERT(!ggml_backend_buffer_is_sycl_split(src0->buffer));
     GGML_ASSERT(src0->type == GGML_TYPE_F16);
 
     GGML_TENSOR_BINARY_OP_LOCALS
@@ -4638,10 +4645,9 @@ static ggml_backend_dev_t ggml_backend_sycl_reg_get_device(ggml_backend_reg_t re
 static void *ggml_backend_sycl_reg_get_proc_address(ggml_backend_reg_t reg, const char *name) {
     GGML_UNUSED(reg);
 
-    // TODO: update to the current function signature
-    //if (strcmp(name, "ggml_backend_split_buffer_type") == 0) {
-    //    return (void *)ggml_backend_sycl_split_buffer_type;
-    //}
+    if (strcmp(name, "ggml_backend_split_buffer_type") == 0) {
+        return (void *)ggml_backend_sycl_split_buffer_type;
+    }
 
     // SYCL doesn't support registering host memory, left here for reference
     // "ggml_backend_register_host_buffer"
diff --git a/gpttype_adapter.cpp b/gpttype_adapter.cpp
index 63cc28814..efef00f26 100644
--- a/gpttype_adapter.cpp
+++ b/gpttype_adapter.cpp
@@ -1754,7 +1754,7 @@ static void grammar_accept_token(FileFormat file_format, int32_t n_vocab, struct
     const auto & code_points = decoded.first;
     for (auto it = code_points.begin(), end = code_points.end() - 1; it != end; ++it) {
         auto prev_stacks = grammar->stacks;
-        llama_grammar_accept(grammar->rules, prev_stacks, *it, grammar->stacks);
+        llama_grammar_accept(grammar, *it);
     }
     grammar->partial_utf8 = decoded.second;
     GGML_ASSERT(!grammar->stacks.empty());
diff --git a/koboldcpp.py b/koboldcpp.py
index 3c1951089..3b5119be6 100644
--- a/koboldcpp.py
+++ b/koboldcpp.py
@@ -56,7 +56,7 @@ maxhordelen = 400
 modelbusy = threading.Lock()
 requestsinqueue = 0
 defaultport = 5001
-KcppVersion = "1.80"
+KcppVersion = "1.80.1"
 showdebug = True
 guimode = False
 showsamplerwarning = True
diff --git a/src/llama-grammar.cpp b/src/llama-grammar.cpp
index 74e9f64b3..76d0cb3a2 100644
--- a/src/llama-grammar.cpp
+++ b/src/llama-grammar.cpp
@@ -822,15 +822,11 @@ llama_grammar_stacks & llama_grammar_get_stacks(struct llama_grammar * grammar)
     return grammar->stacks;
 }
 
-void llama_grammar_accept(
-        const llama_grammar_rules  & rules,
-        const llama_grammar_stacks & stacks,
-        const uint32_t               chr,
-              llama_grammar_stacks & stacks_new) {
-    stacks_new.clear();
-    stacks_new.reserve(stacks.size());
+void llama_grammar_accept(struct llama_grammar * grammar, uint32_t chr) {
+    llama_grammar_stacks stacks_new;
+    stacks_new.reserve(grammar->stacks.size());
 
-    for (const auto & stack : stacks) {
+    for (const auto & stack : grammar->stacks) {
         if (stack.empty()) {
             continue;
         }
@@ -844,9 +840,11 @@ void llama_grammar_accept(
             if (!llama_grammar_is_end_of_sequence(pos)) {
                 new_stack.push_back(pos);
             }
-            llama_grammar_advance_stack(rules, new_stack, stacks_new);
+            llama_grammar_advance_stack(grammar->rules, new_stack, stacks_new);
         }
     }
+
+    grammar->stacks = std::move(stacks_new);
 }
 
 llama_grammar_candidates llama_grammar_reject_candidates_for_stack(
@@ -1051,7 +1049,12 @@ void llama_grammar_free_impl(struct llama_grammar * grammar) {
 }
 
 struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & grammar) {
-    llama_grammar * result = new llama_grammar { grammar.vocab, grammar.rules, grammar.stacks, grammar.partial_utf8, };
+    llama_grammar * result = new llama_grammar {
+        grammar.vocab,
+        grammar.rules,
+        grammar.stacks,
+        grammar.partial_utf8,
+    };
 
     // redirect elements in stacks to point to new rules
     for (size_t is = 0; is < result->stacks.size(); is++) {
@@ -1059,7 +1062,7 @@ struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & gra
             for (size_t ir0 = 0; ir0 < grammar.rules.size(); ir0++) {
                 for (size_t ir1 = 0; ir1 < grammar.rules[ir0].size(); ir1++) {
                     if (grammar.stacks[is][ie] == &grammar.rules[ir0][ir1]) {
-                         result->stacks[is][ie]  =  &result->rules[ir0][ir1];
+                        result->stacks[is][ie] =  &result->rules[ir0][ir1];
                     }
                 }
             }
@@ -1126,11 +1129,8 @@ void llama_grammar_accept_impl(struct llama_grammar & grammar, llama_token token
     const auto   decoded     = decode_utf8(piece, grammar.partial_utf8);
     const auto & code_points = decoded.first;
 
-    llama_grammar_stacks stacks_new;
-
     for (auto it = code_points.begin(), end = code_points.end() - 1; it != end; ++it) {
-        llama_grammar_accept(grammar.rules, grammar.stacks, *it, stacks_new);
-        grammar.stacks = std::move(stacks_new);
+        llama_grammar_accept(&grammar, *it);
     }
 
     grammar.partial_utf8 = decoded.second;
diff --git a/src/llama-grammar.h b/src/llama-grammar.h
index f529ce351..13e940fb5 100644
--- a/src/llama-grammar.h
+++ b/src/llama-grammar.h
@@ -58,6 +58,7 @@ using llama_grammar_rules      = std::vector<llama_grammar_rule>;
 using llama_grammar_stacks     = std::vector<llama_grammar_stack>;
 using llama_grammar_candidates = std::vector<llama_grammar_candidate>;
 
+// TODO: remove, needed for tests atm
 const llama_grammar_rules  & llama_grammar_get_rules (const struct llama_grammar * grammar);
       llama_grammar_stacks & llama_grammar_get_stacks(      struct llama_grammar * grammar);
 
@@ -65,11 +66,7 @@ const llama_grammar_rules  & llama_grammar_get_rules (const struct llama_grammar
 // be positioned at a character range (see `llama_grammar_advance_stack`), and
 // produces the N possible stacks if the given char is accepted at those
 // positions
-void llama_grammar_accept(
-        const llama_grammar_rules  & rules,
-        const llama_grammar_stacks & stacks,
-                          uint32_t   chr,
-              llama_grammar_stacks & stacks_new);
+void llama_grammar_accept(struct llama_grammar * grammar, uint32_t chr);
 
 std::vector<llama_grammar_candidate> llama_grammar_reject_candidates_for_stack(
         const llama_grammar_rules      & rules,
diff --git a/src/llama.cpp b/src/llama.cpp
index 4d44eb94b..8934d5cfb 100644
--- a/src/llama.cpp
+++ b/src/llama.cpp
@@ -134,7 +134,6 @@ static void zeros(std::ofstream & file, size_t n) {
     }
 }
 
-static bool phi3swa_warning_showed = false; //to warn when old phi3 model has no SWA
 static bool old_mixtral_warning_showed = false;
 static int clblast_offload_fallback_layers = 0;
 static int layer_name_to_number(std::string inputString)
@@ -6633,7 +6632,8 @@ static void llm_load_vocab(
                     tokenizer_pre == "jina-v1-en" ||
                     tokenizer_pre == "jina-v2-es" ||
                     tokenizer_pre == "jina-v2-de" ||
-                    tokenizer_pre == "jina-v2-code") {
+                    tokenizer_pre == "jina-v2-code" ||
+                    tokenizer_pre == "roberta-bpe") {
                 vocab.type_pre = LLAMA_VOCAB_PRE_TYPE_GPT2;
             } else if (
                     tokenizer_pre == "refact") {
@@ -13486,21 +13486,13 @@ struct llm_build_context {
         struct ggml_tensor * inp_pos = build_inp_pos();
 
         // KQ_mask (mask for 1 head, it will be broadcasted to all heads)
-        struct ggml_tensor * KQ_mask_swa;
-        if(hparams.n_swa==0)
-        {
-            if(!phi3swa_warning_showed)
-            {
-                phi3swa_warning_showed = true;
-                printf("\nWarning: PHI3 model did not contain sliding window!!!\nSWA is disabled. Model may need a new quant.\n");
-            }
-            KQ_mask_swa = build_inp_KQ_mask();
+        struct ggml_tensor * KQ_mask = nullptr;
+        if (hparams.n_swa == 0) {
+            // Phi-4 doesn't use sliding window attention
+            KQ_mask = build_inp_KQ_mask();
+        } else {
+            KQ_mask = build_inp_KQ_mask_swa();
         }
-        else
-        {
-            KQ_mask_swa = build_inp_KQ_mask_swa();
-        }
-
 
         for (int il = 0; il < n_layer; ++il) {
             auto residual = inpL;
@@ -13558,7 +13550,7 @@ struct llm_build_context {
 
                 cur = llm_build_kv(ctx0, lctx, kv_self, gf,
                         model.layers[il].wo, model.layers[il].bo,
-                        Kcur, Vcur, Qcur, KQ_mask_swa, n_tokens, kv_head, n_kv, 1.0f, cb, il);
+                        Kcur, Vcur, Qcur, KQ_mask, n_tokens, kv_head, n_kv, 1.0f, cb, il);
             }
 
             if (il == n_layer - 1) {
diff --git a/tests/test-gguf.cpp b/tests/test-gguf.cpp
index e5b4cb7b8..1bb5fb47c 100644
--- a/tests/test-gguf.cpp
+++ b/tests/test-gguf.cpp
@@ -634,7 +634,7 @@ static std::pair<int, int> test_handcrafted_file(const unsigned int seed) {
 
         HANDCRAFTED_KV_BAD_KEY_SIZE,
         HANDCRAFTED_KV_BAD_TYPE,
-        HANDCRAFTED_KV_BAD_VALUE_SIZE,
+        // HANDCRAFTED_KV_BAD_VALUE_SIZE, // FIXME sanitizer limit
         // HANDCRAFTED_FILE_TYPE_DUPLICATE_KEY, // FIXME
         HANDCRAFTED_KV_SUCCESS,