Expose Claude Sonnet 5 in Pi catalog

packages/pi/README.md

@@ -2,7 +2,7 @@
 
 Pi package for CortexKit Anthropic OAuth support. It overrides Pi's built-in `anthropic` provider with a CortexKit provider extension backed by the shared `@cortexkit/anthropic-auth-core` package.
 
-The Pi provider catalog includes Claude Fable 5 (`claude-fable-5`), limited-access Claude Mythos 5 (`claude-mythos-5`), Claude Opus 4.8, Claude Opus 4.5, and Claude Sonnet 4.5. Fable/Mythos reasoning uses Anthropic adaptive thinking with `thinking.display: "summarized"` and `output_config.effort`; the package does not send rejected manual `thinking.budget_tokens` for those models.
+The Pi provider catalog includes Claude Fable 5 (`claude-fable-5`), limited-access Claude Mythos 5 (`claude-mythos-5`), Claude Opus 4.8, Claude Opus 4.5, Claude Sonnet 4.5, and Claude Sonnet 5 (`claude-sonnet-5`). Fable/Mythos reasoning uses Anthropic adaptive thinking with `thinking.display: "summarized"` and `output_config.effort`; the package does not send rejected manual `thinking.budget_tokens` for those models.
 
 This package is part of the CortexKit Anthropic Auth monorepo, which supports both OpenCode (`@cortexkit/opencode-anthropic-auth`) and Pi (`@cortexkit/pi-anthropic-auth`) through the same shared core logic.
 

packages/pi/src/index.ts

@@ -107,6 +107,15 @@ export default function cortexKitPiAnthropicAuth(pi: ExtensionAPI) {
         contextWindow: 200_000,
         maxTokens: 64_000,
       },
+      {
+        id: 'claude-sonnet-5',
+        name: 'Claude Sonnet 5',
+        reasoning: true,
+        input: textImageInput(),
+        cost: { input: 2, output: 10, cacheRead: 0.2, cacheWrite: 2.5 },
+        contextWindow: 1_000_000,
+        maxTokens: 128_000,
+      },
     ],
     oauth: {
       name: 'Anthropic Claude Pro/Max (CortexKit)',

packages/pi/src/tests/index.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, test } from 'bun:test'
+import type { ExtensionAPI } from '@earendil-works/pi-coding-agent'
+
+import cortexKitPiAnthropicAuth from '../index'
+
+function mockPi() {
+  const providers = new Map<
+    string,
+    { models?: Array<Record<string, unknown>> }
+  >()
+
+  const pi = {
+    registerCommand: () => {},
+    registerProvider: (
+      name: string,
+      config: { models?: Array<Record<string, unknown>> },
+    ) => {
+      providers.set(name, config)
+    },
+  } as unknown as ExtensionAPI
+
+  return { pi, providers }
+}
+
+describe('cortexKitPiAnthropicAuth provider registration', () => {
+  test('exposes Claude Sonnet 5 in the Pi Anthropic catalog', () => {
+    const { pi, providers } = mockPi()
+
+    cortexKitPiAnthropicAuth(pi)
+
+    const anthropic = providers.get('anthropic')
+    expect(anthropic).toBeDefined()
+
+    const sonnet5 = anthropic?.models?.find(
+      (model) => model.id === 'claude-sonnet-5',
+    )
+    expect(sonnet5).toMatchObject({
+      id: 'claude-sonnet-5',
+      name: 'Claude Sonnet 5',
+      reasoning: true,
+      input: ['text', 'image'],
+      cost: { input: 2, output: 10, cacheRead: 0.2, cacheWrite: 2.5 },
+      contextWindow: 1_000_000,
+      maxTokens: 128_000,
+    })
+  })
+})