diff --git a/src/lib/models.ts b/src/lib/models.ts
index c9e5415..b4133a7 100644
--- a/src/lib/models.ts
+++ b/src/lib/models.ts
@@ -193,7 +193,11 @@ export const MODELS: readonly WhisperModel[] = [
     defaults: { wasm: WASM_Q8, webgpu: WEBGPU_FP16_Q4, webnn: WEBNN_FP16 },
   },
   {
-    id: "onnx-community/whisper-medium.en",
+    // onnx-community has no plain "whisper-medium.en"/"whisper-medium" repos
+    // (the Hub answers 401 "Unauthorized" for missing repos) — the medium
+    // conversions live under these names instead. Verified to carry the full
+    // q4/q8/fp16 encoder + merged-decoder variant set.
+    id: "onnx-community/whisper-medium.en_timestamped",
     fasterWhisperModel: "medium.en",
     displayName: "Whisper Medium (English)",
     multilingual: false,
@@ -202,7 +206,7 @@ export const MODELS: readonly WhisperModel[] = [
     defaults: { wasm: WASM_Q4, webgpu: WEBGPU_FP16_Q4, webnn: WEBNN_FP16 },
   },
   {
-    id: "onnx-community/whisper-medium",
+    id: "onnx-community/whisper-medium-ONNX",
     fasterWhisperModel: "medium",
     displayName: "Whisper Medium",
     multilingual: true,
diff --git a/tests/models.test.ts b/tests/models.test.ts
index dfafcf2..45de3f2 100644
--- a/tests/models.test.ts
+++ b/tests/models.test.ts
@@ -13,6 +13,11 @@ import {
 
 // Pure catalog data (D-006) — no browser, no network.
 
+/** Hub repo-name decorations that follow the Whisper size suffix. */
+function stripRepoDecorations(id: string): string {
+  return id.replace(/(_timestamped|-ONNX)$/, "");
+}
+
 describe("MODELS catalog", () => {
   test("contains the curated D-006 lineup from the onnx-community org", () => {
     const ids = MODELS.map((model) => model.id);
@@ -23,8 +28,8 @@ describe("MODELS catalog", () => {
       "onnx-community/whisper-base",
       "onnx-community/whisper-small.en",
       "onnx-community/whisper-small",
-      "onnx-community/whisper-medium.en",
-      "onnx-community/whisper-medium",
+      "onnx-community/whisper-medium.en_timestamped",
+      "onnx-community/whisper-medium-ONNX",
       "onnx-community/whisper-large-v3-turbo",
     ]);
     expect(new Set(ids).size).toBe(ids.length);
@@ -32,7 +37,9 @@ describe("MODELS catalog", () => {
 
   test(".en variants are English-only; the rest are multilingual", () => {
     for (const model of MODELS) {
-      expect(model.multilingual).toBe(!model.id.endsWith(".en"));
+      // Hub repo names may carry decorations (e.g. "_timestamped", "-ONNX")
+      // after the size suffix — judge English-ness on the undecorated name.
+      expect(model.multilingual).toBe(!stripRepoDecorations(model.id).endsWith(".en"));
     }
   });
 
@@ -64,10 +71,11 @@ describe("MODELS catalog", () => {
   test("every model maps to a faster-whisper name for the server engine (D-013)", () => {
     for (const model of MODELS) {
       // The onnx-community ids and faster-whisper's aliases share the same
-      // size suffix ("tiny.en", …, "large-v3-turbo"); keeping them aligned is
-      // what lets one catalog drive both engines.
+      // size suffix ("tiny.en", …, "large-v3-turbo") once repo-name
+      // decorations ("_timestamped", "-ONNX") are stripped; keeping them
+      // aligned is what lets one catalog drive both engines.
       expect(model.fasterWhisperModel).toBe(
-        model.id.replace("onnx-community/whisper-", ""),
+        stripRepoDecorations(model.id).replace("onnx-community/whisper-", ""),
       );
     }
     expect(getFasterWhisperModel(DEFAULT_MODEL_ID)).toBe("tiny.en");
@@ -81,7 +89,7 @@ describe("resolveDefaultDtype", () => {
   test("WASM defaults: q8 for small models, q4 for large ones", () => {
     expect(resolveDefaultDtype("onnx-community/whisper-tiny.en", "wasm")).toBe("q8");
     expect(resolveDefaultDtype("onnx-community/whisper-small", "wasm")).toBe("q8");
-    expect(resolveDefaultDtype("onnx-community/whisper-medium", "wasm")).toBe("q4");
+    expect(resolveDefaultDtype("onnx-community/whisper-medium-ONNX", "wasm")).toBe("q4");
     expect(resolveDefaultDtype("onnx-community/whisper-large-v3-turbo", "wasm")).toBe("q4");
   });