diff --git a/src/app/api/v1/models/catalog.ts b/src/app/api/v1/models/catalog.ts
index f79c14a05b..788ea4bbe6 100644
--- a/src/app/api/v1/models/catalog.ts
+++ b/src/app/api/v1/models/catalog.ts
@@ -31,6 +31,7 @@ import { getAllMusicModels } from "@omniroute/open-sse/config/musicRegistry";
 import {
   getRegistryModelThinkingEfforts,
   getRegistryThinkingEfforts,
+  providerUsesAuthoritativeLiveCatalog,
   REGISTRY,
 } from "@omniroute/open-sse/config/providerRegistry";
 import { CODEX_NATIVE_UNPREFIXED_MODELS } from "@omniroute/open-sse/services/model";
@@ -994,11 +995,13 @@ async function buildUnifiedModelsResponseCore(
         // the fix, a provider with any synced model silently dropped ALL its
         // static models.
         //
-        // Cursor exclusive listing: when an active synced catalog exists, drop
-        // ALL static rows (including effort variants) so Test All / clients only
-        // see live AvailableModels + injected auto*.
+        // An authoritative active synced catalog replaces the static registry.
+        // Partial discovery providers still use exact-id coverage suppression so
+        // their intentionally omitted static routes remain available.
         const syncedForProvider = syncedModelIdsByCanonicalProvider.get(canonicalProviderId);
-        const exclusiveListing = providerUsesExclusiveSyncedListing(canonicalProviderId);
+        const exclusiveListing =
+          providerUsesExclusiveSyncedListing(canonicalProviderId) ||
+          providerUsesAuthoritativeLiveCatalog(canonicalProviderId);
         const providerHasSynced = syncedForProvider !== undefined && syncedForProvider.size > 0;
         const coveredBySynced = shouldSuppressStaticModelForExclusiveListing({
           exclusiveListing,
diff --git a/tests/unit/models-catalog-static-synced-suppression.test.ts b/tests/unit/models-catalog-static-synced-suppression.test.ts
new file mode 100644
index 0000000000..288e7c2e3c
--- /dev/null
+++ b/tests/unit/models-catalog-static-synced-suppression.test.ts
@@ -0,0 +1,120 @@
+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-model-catalog-static-synced-suppression-")
+);
+
+process.env.DATA_DIR = TEST_DATA_DIR;
+process.env.API_KEY_SECRET =
+  process.env.API_KEY_SECRET || "model-catalog-static-synced-suppression-secret";
+
+const core = await import("../../src/lib/db/core.ts");
+const providersDb = await import("../../src/lib/db/providers.ts");
+const modelsDb = await import("../../src/lib/db/models.ts");
+const catalog = await import("../../src/app/api/v1/models/catalog.ts");
+const { REGISTRY } = await import("@omniroute/open-sse/config/providerRegistry");
+
+const LIVE_MODEL = "google/gemma-4-31b-it";
+
+function getStaticModel(provider: string) {
+  const model = REGISTRY[provider]?.models?.[0];
+  assert.ok(model, `${provider} must define a static registry model for this regression test`);
+  return model;
+}
+
+async function resetStorage() {
+  core.resetDbInstance();
+  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
+  fs.mkdirSync(path.join(TEST_DATA_DIR, "logs/application"), { recursive: true });
+  catalog.__resetCatalogBuilderRunsForTest();
+}
+
+async function seedConnection(provider: string, name: string) {
+  return providersDb.createProviderConnection({
+    provider,
+    authType: "apikey",
+    name,
+    apiKey: "test-api-key",
+    isActive: true,
+    testStatus: "active",
+  });
+}
+
+async function getCatalogIds(): Promise<Set<string>> {
+  const response = await catalog.getUnifiedModelsResponse(
+    new Request("http://localhost/api/v1/models")
+  );
+  const body = (await response.json()) as { data: Array<{ id: string }> };
+
+  assert.equal(response.status, 200);
+  return new Set(body.data.map((model) => model.id));
+}
+
+test.beforeEach(resetStorage);
+
+test.after(() => {
+  core.resetDbInstance();
+  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
+});
+
+test("active authoritative live catalog suppresses stale static registry models", async () => {
+  const staticNvidiaModel = getStaticModel("nvidia").id;
+  const connection = await seedConnection("nvidia", "nvidia-static-synced-suppression");
+  await modelsDb.replaceSyncedAvailableModelsForConnection("nvidia", connection.id as string, [
+    { id: LIVE_MODEL, name: "Gemma 4 31B", source: "imported" },
+  ]);
+
+  const ids = await getCatalogIds();
+
+  assert.equal(ids.has(`nvidia/${LIVE_MODEL}`), true);
+  assert.equal(ids.has(`nvidia/${staticNvidiaModel}`), false);
+});
+
+test("static registry remains fallback when active connection has no live catalog", async () => {
+  const staticNvidiaModel = getStaticModel("nvidia").id;
+  await seedConnection("nvidia", "nvidia-fallback-static");
+
+  const ids = await getCatalogIds();
+
+  assert.equal(ids.has(`nvidia/${staticNvidiaModel}`), true);
+});
+
+test("authoritative live catalog suppresses static effort-tier variants on sync", async () => {
+  const connection = await seedConnection("glm", "glm-authoritative-effort-suppression");
+  const glmStaticModel = REGISTRY.glm?.models?.find(
+    (model) =>
+      Array.isArray(model.supportedThinkingEfforts) && model.supportedThinkingEfforts.length > 0
+  );
+  assert.ok(glmStaticModel, "glm must define an effort-tier static model for this regression test");
+  const effort = glmStaticModel.supportedThinkingEfforts?.[0];
+  assert.ok(effort, "glm static model must declare at least one effort tier");
+
+  await modelsDb.replaceSyncedAvailableModelsForConnection("glm", connection.id as string, [
+    { id: "glm-5-synced", name: "GLM 5 Synced", source: "imported" },
+  ]);
+
+  const ids = await getCatalogIds();
+
+  assert.equal(ids.has("glm/glm-5-synced"), true);
+  assert.equal(ids.has(`glm/${glmStaticModel.id}`), false);
+  assert.equal(ids.has(`glm/${glmStaticModel.id}-${effort}`), false);
+});
+
+test("partial discovery provider preserves uncovered static models when synced", async () => {
+  const connection = await seedConnection("command-code", "command-code-partial-discovery");
+  const uncoveredStaticModel = "deepseek/deepseek-v4-flash";
+  const coveredSyncedModel = "claude-opus-4-7";
+
+  await modelsDb.replaceSyncedAvailableModelsForConnection("command-code", connection.id as string, [
+    { id: coveredSyncedModel, name: "Claude Opus 4.7", source: "imported" },
+  ]);
+
+  const ids = await getCatalogIds();
+
+  assert.equal(ids.has(`cmd/${coveredSyncedModel}`), true);
+  assert.equal(ids.has(`cmd/${uncoveredStaticModel}`), true);
+});