feat(models): add Claude Opus 5 to available models (#3796)

Author: charlesvien

apps/mobile/src/features/tasks/composer/options.ts

@@ -42,10 +42,16 @@ export const MODELS: ModelOption[] = [
     description: "Newest, most capable",
     supportsReasoning: true,
   },
+  {
+    value: "claude-opus-5",
+    label: "Claude Opus 5",
+    description: "Most capable, slower",
+    supportsReasoning: true,
+  },
   {
     value: "claude-opus-4-8",
     label: "Claude Opus 4.8",
-    description: "Most capable, slower",
+    description: "Previous Opus generation",
     supportsReasoning: true,
   },
   {

packages/agent/src/adapters/claude/session/models.test.ts

@@ -30,6 +30,10 @@ describe("toSdkModelId", () => {
     expect(toSdkModelId("claude-sonnet-5")).toBe("claude-sonnet-5");
   });
 
+  it("passes claude-opus-5 through unchanged (no SDK alias)", () => {
+    expect(toSdkModelId("claude-opus-5")).toBe("claude-opus-5");
+  });
+
   it("passes deprecated gateway IDs through unchanged", () => {
     expect(toSdkModelId("claude-opus-4-6")).toBe("claude-opus-4-6");
     expect(toSdkModelId("claude-sonnet-4-5")).toBe("claude-sonnet-4-5");
@@ -67,6 +71,13 @@ describe("model capability flags", () => {
       xhighEffort: true,
       mcpInjection: true,
     },
+    {
+      modelId: "claude-opus-5",
+      oneMContext: true,
+      effort: true,
+      xhighEffort: true,
+      mcpInjection: true,
+    },
     {
       modelId: "claude-sonnet-4-6",
       oneMContext: true,
@@ -123,6 +134,7 @@ describe("resolveEffortForModel", () => {
     ["claude-fable-5", undefined, "high"],
     ["claude-opus-4-8", undefined, "high"],
     ["claude-opus-4-7", undefined, "high"],
+    ["claude-opus-5", undefined, "high"],
     ["claude-sonnet-4-6", undefined, "high"],
     ["claude-sonnet-5", undefined, "high"],
     ["@cf/zai-org/glm-5.2", undefined, "high"],

packages/agent/src/adapters/claude/session/models.ts

@@ -24,6 +24,7 @@ export function toSdkModelId(modelId: string): string {
 const MODELS_WITH_1M_CONTEXT = new Set([
   "claude-opus-4-7",
   "claude-opus-4-8",
+  "claude-opus-5",
   "claude-sonnet-4-6",
   "claude-sonnet-5",
   "claude-fable-5",
@@ -46,6 +47,7 @@ const EXTENDED_EFFORT_LEVELS: readonly EffortLevel[] = [
 const MODEL_EFFORT_LEVELS: Readonly<Record<string, readonly EffortLevel[]>> = {
   "claude-opus-4-7": EXTENDED_EFFORT_LEVELS,
   "claude-opus-4-8": EXTENDED_EFFORT_LEVELS,
+  "claude-opus-5": EXTENDED_EFFORT_LEVELS,
   "claude-sonnet-4-6": STANDARD_EFFORT_LEVELS,
   "claude-sonnet-5": EXTENDED_EFFORT_LEVELS,
   "claude-fable-5": EXTENDED_EFFORT_LEVELS,

packages/agent/src/gateway-models.test.ts

@@ -111,6 +111,7 @@ describe("getClaudeModelRecency", () => {
     ["claude-sonnet-4-6", 4006],
     ["claude-opus-4-7", 4007],
     ["claude-opus-4-8", 4008],
+    ["claude-opus-5", 5000],
     ["claude-sonnet-5", 5000],
     ["claude-fable-5", 5000],
   ])("ranks %s by its embedded version (%i)", (modelId, rank) => {

packages/harness/src/extensions/posthog-provider/models.ts

@@ -124,6 +124,12 @@ function toModelConfig(
 }
 
 const FALLBACK_GATEWAY_MODELS: GatewayModel[] = [
+  {
+    id: "claude-opus-5",
+    owned_by: "anthropic",
+    context_window: 1000000,
+    supports_vision: true,
+  },
   {
     id: "claude-opus-4-8",
     owned_by: "anthropic",

packages/ui/src/features/loops/loopModels.test.ts

@@ -128,6 +128,7 @@ describe("loopModelOptions", () => {
         "claude-sonnet-4-6",
         "claude-opus-4-7",
         "claude-opus-4-8",
+        "claude-opus-5",
         "claude-sonnet-5",
         "claude-fable-5",
         "@cf/zai-org/glm-5.2",
@@ -153,6 +154,7 @@ describe("loopModelOptions", () => {
         "claude-sonnet-4-6",
         "claude-opus-4-7",
         "claude-opus-4-8",
+        "claude-opus-5",
         "claude-sonnet-5",
         "claude-fable-5",
       ],

packages/ui/src/features/loops/loopModels.ts

@@ -36,6 +36,7 @@ const FALLBACK_MODEL_OPTIONS: Record<
     { value: "claude-sonnet-4-6", label: "Claude Sonnet 4.6" },
     { value: "claude-opus-4-7", label: "Claude Opus 4.7" },
     { value: "claude-opus-4-8", label: "Claude Opus 4.8" },
+    { value: "claude-opus-5", label: "Claude Opus 5" },
     { value: "claude-sonnet-5", label: "Claude Sonnet 5" },
     { value: "claude-fable-5", label: "Claude Fable 5" },
     { value: "@cf/zai-org/glm-5.2", label: "GLM-5.2" },

packages/ui/src/features/message-editor/components/PromptInput.stories.tsx

@@ -24,6 +24,7 @@ const mockModelOption = {
       name: "Recommended",
       options: [
         { value: "gpt-5.5", name: "gpt-5.5" },
+        { value: "claude-opus-5", name: "Claude Opus 5" },
         { value: "claude-sonnet-5", name: "Claude Sonnet 5" },
         { value: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
       ],