diff --git a/changelog.d/fixes/10615-api-models-v1-models-id-mismatch.md b/changelog.d/fixes/10615-api-models-v1-models-id-mismatch.md
new file mode 100644
index 0000000000..8cee943efa
--- /dev/null
+++ b/changelog.d/fixes/10615-api-models-v1-models-id-mismatch.md
@@ -0,0 +1 @@
+- fix(dashboard): make /api/models agree with /v1/models on synced-catalog coverage instead of reporting stale models as available (#10615)
diff --git a/src/app/api/models/route.ts b/src/app/api/models/route.ts
index 55282ecf2e..293d34a607 100644
--- a/src/app/api/models/route.ts
+++ b/src/app/api/models/route.ts
@@ -10,6 +10,14 @@ import {
   getResolvedModelCapabilities,
 } from "@/lib/modelCapabilities";
 import { isFreeModel, providerHasFreeModels } from "@/shared/utils/freeModels";
+import { getAllActiveSyncedModels } from "@/lib/db/models/activeSyncedCatalog";
+import { providerUsesExclusiveSyncedListing } from "@/lib/providers/modelListingCapability";
+import {
+  buildSyncedModelIdsByCanonicalProvider,
+  shouldSuppressStaticModelForExclusiveListing,
+} from "@/app/api/v1/models/catalogSyncedCoverage";
+import { buildAliasMaps } from "@/app/api/v1/models/catalogProviderMaps";
+import { resolveCanonicalProviderId as resolveCanonicalProviderIdFromMaps } from "@/app/api/v1/models/catalogProviderMaps";
 
 interface GetModelsDependencies {
   createCapabilitySnapshot?: typeof createModelCapabilityResolutionSnapshot;
@@ -107,9 +115,42 @@ export async function handleGetModels(request: Request, dependencies: GetModelsD
     const capabilitySnapshot = (
       dependencies.createCapabilitySnapshot ?? createModelCapabilityResolutionSnapshot
     )();
+
+    // #10615: a static row can be `available: true` here while /v1/models has already
+    // dropped it because a provider's live-synced catalog covers it (or, for
+    // exclusive-listing providers like Cursor, replaces the static list entirely).
+    // Recompute the same suppression /v1/models applies so the two endpoints agree.
+    let syncedModelIdsByCanonicalProvider = new Map<string, Set<string>>();
+    let resolveCanonicalProviderIdForStatic: (alias: string) => string = (alias) => alias;
+    try {
+      const syncedModelsByProvider = await getAllActiveSyncedModels();
+      const { aliasToProviderId, providerIdToAlias } = buildAliasMaps();
+      const resolve = (aliasOrId: string, fallbackProviderId?: string) =>
+        resolveCanonicalProviderIdFromMaps(aliasToProviderId, aliasOrId, fallbackProviderId);
+      resolveCanonicalProviderIdForStatic = (alias: string) => resolve(alias);
+      syncedModelIdsByCanonicalProvider = buildSyncedModelIdsByCanonicalProvider(
+        syncedModelsByProvider,
+        resolve,
+        {},
+        providerIdToAlias
+      );
+    } catch {
+      // Synced catalog unavailable — fall through with static-only availability.
+    }
+
     const models = candidates.map((m: any) => {
       const fullModel = `${m.provider}/${m.model}`;
-      const available = !activeProviders || activeProviders.has(m.provider);
+      const canonicalProviderId = resolveCanonicalProviderIdForStatic(m.provider);
+      const syncedForProvider = syncedModelIdsByCanonicalProvider.get(canonicalProviderId);
+      const providerHasSynced = syncedForProvider !== undefined && syncedForProvider.size > 0;
+      const suppressedBySync = shouldSuppressStaticModelForExclusiveListing({
+        exclusiveListing: providerUsesExclusiveSyncedListing(canonicalProviderId),
+        providerHasSynced,
+        staticModelId: m.model,
+        syncedModelIds: syncedForProvider ? [...syncedForProvider] : [],
+      });
+      const available =
+        (!activeProviders || activeProviders.has(m.provider)) && !suppressedBySync;
       return {
         ...m,
         fullModel,
diff --git a/tests/unit/api-models-v1-models-mismatch-10615.test.ts b/tests/unit/api-models-v1-models-mismatch-10615.test.ts
new file mode 100644
index 0000000000..b6a241844a
--- /dev/null
+++ b/tests/unit/api-models-v1-models-mismatch-10615.test.ts
@@ -0,0 +1,66 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+
+const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-10615-"));
+process.env.DATA_DIR = TEST_DATA_DIR;
+
+const core = await import("../../src/lib/db/core.ts");
+const providersDb = await import("../../src/lib/db/providers.ts");
+const localDb = await import("../../src/lib/localDb.ts");
+const modelsRoute = await import("../../src/app/api/models/route.ts");
+const v1ModelsCatalog = await import("../../src/app/api/v1/models/catalog.ts");
+
+test.after(() => {
+  core.resetDbInstance();
+  try {
+    fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
+  } catch {}
+});
+
+test("#10615: /api/models must agree with /v1/models on exclusive synced-listing coverage", async () => {
+  const connection = await providersDb.createProviderConnection({
+    provider: "cursor",
+    authType: "oauth",
+    name: "cursor-main",
+    accessToken: "cursor-access-token",
+    isActive: true,
+  });
+
+  const apiModelsRes = await modelsRoute.GET(new Request("http://localhost/api/models"));
+  const apiModelsBody = (await apiModelsRes.json()) as {
+    models: Array<{ provider: string; model: string; fullModel: string; available: boolean }>;
+  };
+  const staticRow = apiModelsBody.models.find((m) => m.fullModel === "cu/composer-2.5");
+  assert.ok(staticRow, "/api/models must list the static cursor model");
+  assert.equal(staticRow!.available, true);
+
+  await localDb.replaceSyncedAvailableModelsForConnection("cursor", connection.id, [
+    { id: "composer-3", name: "Composer 3" },
+  ]);
+  v1ModelsCatalog.__resetCatalogBuilderRunsForTest();
+
+  const v1Res = await v1ModelsCatalog.getUnifiedModelsResponse(
+    new Request("http://localhost/api/v1/models")
+  );
+  const v1Body = (await v1Res.json()) as { data: Array<{ id: string }> };
+  const v1Ids = v1Body.data.map((m) => m.id);
+
+  assert.equal(v1Res.status, 200);
+  assert.ok(v1Ids.includes("cu/composer-3"));
+  assert.equal(v1Ids.includes("cu/composer-2.5"), false);
+
+  const apiModelsAfterRes = await modelsRoute.GET(new Request("http://localhost/api/models"));
+  const apiModelsAfterBody = (await apiModelsAfterRes.json()) as {
+    models: Array<{ fullModel: string; available: boolean }>;
+  };
+  const staticRowAfter = apiModelsAfterBody.models.find((m) => m.fullModel === "cu/composer-2.5");
+  assert.ok(staticRowAfter);
+  assert.equal(
+    staticRowAfter!.available,
+    false,
+    "/api/models must mark a synced-superseded static model as unavailable"
+  );
+});