diff --git a/packages/hub-client/src/seed.ts b/packages/hub-client/src/seed.ts
index f3ddc5cc9..e53cb8869 100644
--- a/packages/hub-client/src/seed.ts
+++ b/packages/hub-client/src/seed.ts
@@ -1339,7 +1339,52 @@ async function ensureCatalogOffering(
     return;
   }
   if (created.status === 409) {
-    log("catalog offering already exists (skipped)");
+    let cursor: string | null = null;
+    let existing: typeof ModelOfferingResponse.infer | undefined;
+    do {
+      const listed = await api(
+        "GET",
+        `/api/tenants/${args.tenantId}/catalog/offerings${cursor === null ? "" : `?cursor=${encodeURIComponent(cursor)}`}`,
+        undefined,
+        cookies,
+      );
+      const page = parseAs(
+        paginatedSchema(ModelOfferingResponse),
+        listed.data,
+        "catalog offerings response",
+      );
+      existing = page.data.find(
+        (offering) =>
+          offering.modelId === args.modelId &&
+          offering.providerId === args.providerId,
+      );
+      cursor = page.nextCursor;
+    } while (existing === undefined && cursor !== null);
+    if (!existing) {
+      throw new CliError(
+        "catalog offering reported a conflict but is not listable on the bench",
+        "check the hub logs for the underlying failure, then re-run: workbench seed",
+      );
+    }
+    if (existing.priority === args.priority) {
+      log("catalog offering already exists (skipped)");
+      return;
+    }
+
+    const updated = await api(
+      "PATCH",
+      `/api/tenants/${args.tenantId}/catalog/offerings/${existing.id}`,
+      { priority: args.priority },
+      cookies,
+    );
+    if (updated.status !== 200) {
+      throw new CliError(
+        `the hub rejected updating the catalog offering priority with status ${updated.status}: ${JSON.stringify(updated.data)}`,
+        "check the hub logs for the underlying failure, then re-run: workbench seed",
+      );
+    }
+    parseAs(ModelOfferingResponse, updated.data, "catalog offering response");
+    log("updated catalog offering priority");
     return;
   }
   throw new CliError(
@@ -1566,14 +1611,14 @@ export async function seedCatalog(
     },
     log,
   );
-  // Priority = the provider's CATALOG_SEEDS declaration index (anthropic
-  // first), so when several connected providers serve the same model the
-  // fallback order is deterministic instead of an all-zeroes tie broken
-  // by insertion accident.
-  const offeringPriority = Math.max(
-    0,
-    Object.keys(CATALOG_SEEDS).indexOf(provider),
-  );
+  // Flatten the curated provider/model declaration order into one priority
+  // sequence. Provider order still controls cross-provider fallback, while
+  // model order makes each provider's declared default the first choice.
+  let offeringPriorityOffset = 0;
+  for (const [seedProvider, providerSeed] of Object.entries(CATALOG_SEEDS)) {
+    if (seedProvider === provider) break;
+    offeringPriorityOffset += providerSeed.models.length;
+  }
   // What each deployment can do, resolved from the pinned catalog's probe
   // results. Until this, every seeded offering stored an empty capability
   // list, so no capability filter — this repo's concept resolution or the
@@ -1585,7 +1630,7 @@ export async function seedCatalog(
     canonicalName: string;
     capabilities: readonly string[];
   }[] = [];
-  for (const model of seededModels) {
+  for (const [modelIndex, model] of seededModels.entries()) {
     // Ollama's dynamic entries already carry their own live-probed
     // capabilities (`fetchOllamaModelCatalog`, CL-6366) — narrowed against
     // the real `Capability` enum here, the trust boundary, rather than
@@ -1627,7 +1672,7 @@ export async function seedCatalog(
         tenantId,
         modelId: model.id,
         providerId: catalogProviderId,
-        priority: offeringPriority,
+        priority: offeringPriorityOffset + modelIndex,
         capabilities,
         ...(quirks !== undefined ? { quirks } : {}),
       },
diff --git a/packages/hub-client/test/seed.test.ts b/packages/hub-client/test/seed.test.ts
index 47fc1d1e5..3916e3b0e 100644
--- a/packages/hub-client/test/seed.test.ts
+++ b/packages/hub-client/test/seed.test.ts
@@ -1455,7 +1455,11 @@ describe("seedCatalog", () => {
   test("fresh run creates the full provider-to-offering chain", async () => {
     const { lines, log } = collector();
     const modelPosts: string[] = [];
-    const offeringPosts: { modelId: string; providerId: string }[] = [];
+    const offeringPosts: {
+      modelId: string;
+      providerId: string;
+      priority: number;
+    }[] = [];
     const handler: FakeHandler = (method, path, body) => {
       if (method === "POST" && path === `/api/tenants/${TENANT_ID}/providers`)
         return { status: 201, data: providerRow("prv_1", "anthropic") };
@@ -1497,7 +1501,7 @@ describe("seedCatalog", () => {
           capabilities: string[];
         };
         expect(offeringBody.providerId).toBe("cpv_1");
-        expect(offeringBody.priority).toBe(0);
+        expect(offeringBody.priority).toBe(offeringPosts.length);
         expect(offeringBody.capabilities.length).toBeGreaterThan(0);
         expect(offeringBody.capabilities).toContain("plain-text");
         expect(offeringBody.capabilities).toContain(
@@ -1540,7 +1544,6 @@ describe("seedCatalog", () => {
       "mdl_5",
       "mdl_6",
     ]);
-
     const output = lines.join("\n");
     expect(output).toContain("created provider anthropic");
     expect(output).toContain("created credential anthropic-default");
@@ -1552,6 +1555,173 @@ describe("seedCatalog", () => {
     );
   });
 
+  test("fresh run gives the declared Anthropic default the lowest distinct priority", async () => {
+    const { log } = collector();
+    const modelNamesById = new Map<string, string>();
+    const offeringPosts: { modelId: string; priority: number }[] = [];
+    const handler: FakeHandler = (method, path, body) => {
+      if (method === "POST" && path === `/api/tenants/${TENANT_ID}/providers`)
+        return { status: 201, data: providerRow("prv_1", "anthropic") };
+      if (method === "POST" && path === `/api/tenants/${TENANT_ID}/credentials`)
+        return {
+          status: 201,
+          data: credentialRow("cre_1", "prv_1", "anthropic-default"),
+        };
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/models`
+      ) {
+        const canonicalName = (body as { canonicalName: string }).canonicalName;
+        const modelId = `mdl_${modelNamesById.size + 1}`;
+        modelNamesById.set(modelId, canonicalName);
+        return {
+          status: 201,
+          data: catalogModelRow(modelId, canonicalName),
+        };
+      }
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/providers`
+      )
+        return {
+          status: 201,
+          data: catalogProviderRow("cpv_1", "anthropic", "cre_1"),
+        };
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/offerings`
+      ) {
+        const offering = body as { modelId: string; priority: number };
+        offeringPosts.push(offering);
+        return {
+          status: 201,
+          data: catalogOfferingRow(
+            `off_${offeringPosts.length}`,
+            offering.modelId,
+            "cpv_1",
+          ),
+        };
+      }
+      return undefined;
+    };
+
+    await seedCatalog({
+      api: fakeAPI(handler),
+      cookies: [],
+      tenantId: TENANT_ID,
+      apiKey: "sk-test",
+      log,
+    });
+
+    const priorities = offeringPosts.map((offering) => offering.priority);
+    const sonnet = offeringPosts.find(
+      (offering) => modelNamesById.get(offering.modelId) === "claude-sonnet-5",
+    );
+    expect(new Set(priorities).size).toBe(offeringPosts.length);
+    expect(sonnet?.priority).toBe(Math.min(...priorities));
+  });
+
+  test("re-run updates a legacy offering to its computed priority", async () => {
+    const { log } = collector();
+    const patchedOfferings: { id: string; priority: number }[] = [];
+    const handler: FakeHandler = (method, path, body) => {
+      if (method === "POST" && path === `/api/tenants/${TENANT_ID}/providers`)
+        return { status: 201, data: providerRow("prv_1", "anthropic") };
+      if (method === "POST" && path === `/api/tenants/${TENANT_ID}/credentials`)
+        return {
+          status: 201,
+          data: credentialRow("cre_1", "prv_1", "anthropic-default"),
+        };
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/models`
+      ) {
+        const canonicalName = (body as { canonicalName: string }).canonicalName;
+        const modelId =
+          canonicalName === "claude-opus-5" ? "mdl_legacy" : "mdl_new";
+        return { status: 201, data: catalogModelRow(modelId, canonicalName) };
+      }
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/providers`
+      )
+        return {
+          status: 201,
+          data: catalogProviderRow("cpv_1", "anthropic", "cre_1"),
+        };
+      if (
+        method === "POST" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/offerings`
+      ) {
+        const offering = body as { modelId: string };
+        if (offering.modelId === "mdl_legacy")
+          return { status: 409, data: { error: "already exists" } };
+        return {
+          status: 201,
+          data: catalogOfferingRow(
+            `off_${offering.modelId}`,
+            offering.modelId,
+            "cpv_1",
+          ),
+        };
+      }
+      if (
+        method === "GET" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/offerings`
+      )
+        return {
+          status: 200,
+          data: {
+            data: [
+              catalogOfferingRow(
+                "off_other_provider",
+                "mdl_legacy",
+                "cpv_other",
+              ),
+            ],
+            nextCursor: "second-page",
+          },
+        };
+      if (
+        method === "GET" &&
+        path ===
+          `/api/tenants/${TENANT_ID}/catalog/offerings?cursor=second-page`
+      )
+        return {
+          status: 200,
+          data: {
+            data: [catalogOfferingRow("off_legacy", "mdl_legacy", "cpv_1")],
+            nextCursor: null,
+          },
+        };
+      if (
+        method === "PATCH" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/offerings/off_legacy`
+      ) {
+        const patch = body as { priority: number };
+        patchedOfferings.push({ id: "off_legacy", priority: patch.priority });
+        return {
+          status: 200,
+          data: {
+            ...catalogOfferingRow("off_legacy", "mdl_legacy", "cpv_1"),
+            priority: patch.priority,
+          },
+        };
+      }
+      return undefined;
+    };
+
+    await seedCatalog({
+      api: fakeAPI(handler),
+      cookies: [],
+      tenantId: TENANT_ID,
+      apiKey: "sk-test",
+      log,
+    });
+
+    expect(patchedOfferings).toEqual([{ id: "off_legacy", priority: 1 }]);
+  });
+
   test("an Ollama offering's quirks carry that model's real context-window ceiling, not the built-in 4096 default", async () => {
     const { log } = collector();
     const offeringBodies: Record<string, unknown>[] = [];
@@ -1713,6 +1883,7 @@ describe("seedCatalog", () => {
     const { lines, log } = collector();
     let patchCalls = 0;
     let postCredentialCalls = 0;
+    let offeringPosts = 0;
     let patchBody: unknown;
 
     const staleCredentialRow = () => ({
@@ -1785,11 +1956,17 @@ describe("seedCatalog", () => {
         method === "POST" &&
         path === `/api/tenants/${TENANT_ID}/catalog/offerings`
       ) {
-        // Priority = the provider's CATALOG_SEEDS declaration index, so
-        // multi-provider fallback order is deterministic, never a tie.
-        expect((body as { priority: number }).priority).toBe(
+        const providersBeforeHuggingFace = Object.entries(CATALOG_SEEDS).slice(
+          0,
           Object.keys(CATALOG_SEEDS).indexOf("huggingface"),
         );
+        expect((body as { priority: number }).priority).toBe(
+          providersBeforeHuggingFace.reduce(
+            (offset, [, providerSeed]) => offset + providerSeed.models.length,
+            0,
+          ) + offeringPosts,
+        );
+        offeringPosts += 1;
         return {
           status: 201,
           data: catalogOfferingRow("off_1", "mdl_1", "cpv_1"),
@@ -2190,6 +2367,24 @@ describe("seedCatalog", () => {
         offeringPosts += 1;
         return { status: 409, data: { error: "already exists" } };
       }
+      if (
+        method === "GET" &&
+        path === `/api/tenants/${TENANT_ID}/catalog/offerings`
+      )
+        return {
+          status: 200,
+          data: {
+            data: anthropicModels.map((_, index) => ({
+              ...catalogOfferingRow(
+                `off_${index + 1}`,
+                `mdl_${index + 1}`,
+                "cpv_1",
+              ),
+              priority: index,
+            })),
+            nextCursor: null,
+          },
+        };
       return undefined;
     };
 
diff --git a/packages/onboarding/test/complete-credential.test.ts b/packages/onboarding/test/complete-credential.test.ts
index c754be3fe..68ea5a548 100644
--- a/packages/onboarding/test/complete-credential.test.ts
+++ b/packages/onboarding/test/complete-credential.test.ts
@@ -756,6 +756,17 @@ describe("completeCredentialSetup", () => {
           cookies: [],
         };
       }
+      if (
+        method === "GET" &&
+        (path === `/api/tenants/${TENANT_ID}/catalog/offerings` ||
+          path.startsWith(`/api/tenants/${TENANT_ID}/catalog/offerings?`))
+      ) {
+        return {
+          status: 200,
+          data: { data: [], nextCursor: null },
+          cookies: [],
+        };
+      }
       throw new Error(`unexpected call: ${method} ${path}`);
     };
 
@@ -949,7 +960,12 @@ describe("completeCredentialSetup", () => {
     const deployments: { definitionAssetId: string; id: string }[] = [];
     const catalogModels: Row[] = [];
     const catalogProviders: Row[] = [];
-    const catalogOfferings: { modelId: string; providerId: string }[] = [];
+    const catalogOfferings: {
+      id: string;
+      modelId: string;
+      providerId: string;
+      priority: number;
+    }[] = [];
     const providers: Row[] = [];
     const credentials: Row[] = [];
     let assetCreatePosts = 0;
@@ -1331,21 +1347,31 @@ describe("completeCredentialSetup", () => {
         method === "POST" &&
         path === `/api/tenants/${TENANT_ID}/catalog/offerings`
       ) {
-        const b = body as { modelId: string; providerId: string };
+        const b = body as {
+          modelId: string;
+          providerId: string;
+          priority: number;
+        };
         const existing = catalogOfferings.find(
           (o) => o.modelId === b.modelId && o.providerId === b.providerId,
         );
         if (existing) return { status: 409, data: {}, cookies: [] };
         catalogOfferingCreatePosts += 1;
-        catalogOfferings.push({ modelId: b.modelId, providerId: b.providerId });
+        const id = `off_${catalogOfferings.length + 1}`;
+        catalogOfferings.push({
+          id,
+          modelId: b.modelId,
+          providerId: b.providerId,
+          priority: b.priority,
+        });
         return {
           status: 201,
           data: {
-            id: `off_${catalogOfferings.length}`,
+            id,
             tenantId: TENANT_ID,
             modelId: b.modelId,
             providerId: b.providerId,
-            priority: 0,
+            priority: b.priority,
             deploymentTags: [],
             capabilities: [],
             quirks: null,
@@ -1356,6 +1382,32 @@ describe("completeCredentialSetup", () => {
           cookies: [],
         };
       }
+      if (
+        method === "GET" &&
+        (path === `/api/tenants/${TENANT_ID}/catalog/offerings` ||
+          path.startsWith(`/api/tenants/${TENANT_ID}/catalog/offerings?`))
+      ) {
+        return {
+          status: 200,
+          data: {
+            data: catalogOfferings.map((o) => ({
+              id: o.id,
+              tenantId: TENANT_ID,
+              modelId: o.modelId,
+              providerId: o.providerId,
+              priority: o.priority,
+              deploymentTags: [],
+              capabilities: [],
+              quirks: null,
+              disabled: false,
+              createdAt: TIMESTAMP,
+              updatedAt: TIMESTAMP,
+            })),
+            nextCursor: null,
+          },
+          cookies: [],
+        };
+      }
       throw new Error(`unexpected call: ${method} ${path}`);
     };
 
diff --git a/packages/onboarding/test/huggingface-connect-routes.test.ts b/packages/onboarding/test/huggingface-connect-routes.test.ts
index c19a81db3..bdcfe2162 100644
--- a/packages/onboarding/test/huggingface-connect-routes.test.ts
+++ b/packages/onboarding/test/huggingface-connect-routes.test.ts
@@ -156,6 +156,9 @@ function mockHub() {
       201,
     ),
   );
+  hub.get("/api/tenants/ten_1/catalog/offerings", (c) =>
+    c.json({ data: [], nextCursor: null }),
+  );
   return hub;
 }
 
diff --git a/packages/onboarding/test/openrouter-connect-routes.test.ts b/packages/onboarding/test/openrouter-connect-routes.test.ts
index a18304407..27454ab4c 100644
--- a/packages/onboarding/test/openrouter-connect-routes.test.ts
+++ b/packages/onboarding/test/openrouter-connect-routes.test.ts
@@ -154,6 +154,9 @@ function mockHub() {
       201,
     ),
   );
+  hub.get("/api/tenants/ten_1/catalog/offerings", (c) =>
+    c.json({ data: [], nextCursor: null }),
+  );
   return hub;
 }