diff --git a/packages/adapters/claude-local/src/index.ts b/packages/adapters/claude-local/src/index.ts
index 5972ad4634..fc20d2eab1 100644
--- a/packages/adapters/claude-local/src/index.ts
+++ b/packages/adapters/claude-local/src/index.ts
@@ -9,6 +9,7 @@ export const models = [
   { id: "claude-opus-4-8", label: "Claude Opus 4.8" },
   { id: "claude-fable-5", label: "Claude Fable 5" },
   { id: "claude-mythos-5", label: "Claude Mythos 5" },
+  { id: "claude-opus-5", label: "Claude Opus 5" },
   { id: "claude-opus-4-7", label: "Claude Opus 4.7" },
   { id: "claude-opus-4-6", label: "Claude Opus 4.6" },
   { id: "claude-sonnet-4-6", label: "Claude Sonnet 4.6" },
diff --git a/server/src/__tests__/adapter-models.test.ts b/server/src/__tests__/adapter-models.test.ts
index ba9faa9e0a..f7d28c3116 100644
--- a/server/src/__tests__/adapter-models.test.ts
+++ b/server/src/__tests__/adapter-models.test.ts
@@ -67,6 +67,8 @@ describe("adapter model listing", () => {
     expect(models[0]?.id).toBe("claude-opus-4-8");
     expect(models.some((model) => model.id === "claude-fable-5")).toBe(true);
     expect(models.some((model) => model.id === "claude-mythos-5")).toBe(true);
+    // Opus 5 is a current GA flagship and must be offered even when live discovery is unavailable.
+    expect(models.some((model) => model.id === "claude-opus-5")).toBe(true);
     expect(fetchSpy).not.toHaveBeenCalled();
   });