diff --git a/tools/ui/src/lib/services/models.service.ts b/tools/ui/src/lib/services/models.service.ts
index bccda35c2b..3157d9145b 100644
--- a/tools/ui/src/lib/services/models.service.ts
+++ b/tools/ui/src/lib/services/models.service.ts
@@ -8,7 +8,7 @@
 
 import { base } from '$app/paths';
 import { API_MODELS, MODEL_ID, type ModelSidecar, sidecarFromFileToken } from '$lib/constants';
-import { ServerModelStatus } from '$lib/enums';
+import { ModelAuxSidecar, ModelDraftSidecar, ServerModelStatus } from '$lib/enums';
 import type { ParsedModelId } from '$lib/types/models';
 import {
 	apiDelete,
@@ -20,9 +20,32 @@ import {
 } from '$lib/utils';
 import { getAuthHeaders } from '$lib/utils/api-headers';
 
+/** Sidecar filename tokens, mirrored from the enums for entry-tag checks. */
+const SIDECAR_TOKENS: readonly string[] = [
+	...Object.values(ModelDraftSidecar),
+	...Object.values(ModelAuxSidecar)
+];
+
 export class ModelsService {
 	private static readonly SSE_RECONNECT_MS = 1000;
 
+	/**
+	 * True when a router entry id is a sidecar-only entry, e.g. `org/model:Q4_0-mtp`
+	 * or `org/model:mmproj`. Such entries mark a downloaded sidecar file, not a
+	 * loadable model, so the selector skips them.
+	 */
+	static isSidecarEntry(modelId: string): boolean {
+		const idx = modelId.indexOf(MODEL_ID.QUANTIZATION_SEPARATOR);
+
+		if (idx === MODEL_ID.NOT_FOUND) return false;
+
+		const tag = modelId.slice(idx + 1).toLowerCase();
+		const dash = tag.lastIndexOf(MODEL_ID.SEGMENT_SEPARATOR);
+		const token = dash === -1 ? tag : tag.slice(dash + 1);
+
+		return SIDECAR_TOKENS.includes(token);
+	}
+
 	/**
 	 * Build the `<repo>:<tag>` string expected by POST /models from a parsed
 	 * filename quant + optional sidecar type. Used by the model download
diff --git a/tools/ui/src/lib/stores/models/index.svelte.ts b/tools/ui/src/lib/stores/models/index.svelte.ts
index 095b343b9f..b95014168a 100644
--- a/tools/ui/src/lib/stores/models/index.svelte.ts
+++ b/tools/ui/src/lib/stores/models/index.svelte.ts
@@ -359,27 +359,41 @@ class ModelsStore implements ModelPropsHost, ModelStatusHost {
 	 * they differ only in which endpoint is called.
 	 */
 	private buildModelOptions(response: ApiModelsListResponse): ModelOption[] {
-		return response.data.map((item: ApiModelDataEntry, index: number) => {
-			const details = response.models?.[index];
-			const rawCapabilities = Array.isArray(details?.capabilities) ? details?.capabilities : [];
-			const displayNameSource =
-				details?.name && details.name.trim().length > 0 ? details.name : item.id;
-			const modelId = details?.model || item.id;
+		const entries: {
+			details?: ApiModelsListResponse['models'][number];
+			item: ApiModelDataEntry;
+		}[] = response.data.map((item: ApiModelDataEntry, index: number) => ({
+			details: response.models?.[index],
+			item
+		}));
 
-			return {
-				aliases: item.aliases ?? [],
-				capabilities: rawCapabilities.filter((value: unknown): value is string => Boolean(value)),
-				description: details?.description,
-				details: details?.details,
-				id: item.id,
-				meta: item.meta ?? null,
-				modalities: this.props.buildArchitectureModalities(item.architecture),
-				model: modelId,
-				name: this.toDisplayName(displayNameSource),
-				parsedId: ModelsService.parseModelId(modelId),
-				tags: item.tags ?? []
-			};
-		});
+		return (
+			entries
+				// sidecar entries mark downloaded sidecar files, not loadable models
+				.filter(({ item }) => !ModelsService.isSidecarEntry(item.id))
+				.map(({ details, item }) => {
+					const rawCapabilities = Array.isArray(details?.capabilities) ? details?.capabilities : [];
+					const displayNameSource =
+						details?.name && details.name.trim().length > 0 ? details.name : item.id;
+					const modelId = details?.model || item.id;
+
+					return {
+						aliases: item.aliases ?? [],
+						capabilities: rawCapabilities.filter((value: unknown): value is string =>
+							Boolean(value)
+						),
+						description: details?.description,
+						details: details?.details,
+						id: item.id,
+						meta: item.meta ?? null,
+						modalities: this.props.buildArchitectureModalities(item.architecture),
+						model: modelId,
+						name: this.toDisplayName(displayNameSource),
+						parsedId: ModelsService.parseModelId(modelId),
+						tags: item.tags ?? []
+					};
+				})
+		);
 	}
 
 	/** Fetch models in MODEL mode (single model, standard OpenAI-compatible). */