feat(api): mark Sonnet and Opus 4 as deprecated

Author: dtmeadows

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 72
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-dfe504526eed07979685a729ac9afd45e59cc2879291714b9f4674f2ef1247c7.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-f4d4f18820ecfbe244fb1bbc2232939afca73dfcb21ce23bc296571ee7320e3a.yml
 openapi_spec_hash: d849fdf2c4dd6631a60c4340e9bc1322
-config_hash: 4f42711769ade2ca17b39534532e66bf
+config_hash: 2e9a2fd5355db62857f6be16f46a3ccc

src/resources/messages/messages.ts

@@ -1122,6 +1122,10 @@ const DEPRECATED_MODELS: {
   'claude-3-7-sonnet-20250219': 'February 19th, 2026',
   'claude-3-5-haiku-latest': 'February 19th, 2026',
   'claude-3-5-haiku-20241022': 'February 19th, 2026',
+  'claude-opus-4-0': 'June 15th, 2026',
+  'claude-opus-4-20250514': 'June 15th, 2026',
+  'claude-sonnet-4-0': 'June 15th, 2026',
+  'claude-sonnet-4-20250514': 'June 15th, 2026',
 };
 
 const MODELS_TO_WARN_WITH_THINKING_ENABLED: Model[] = ['claude-opus-4-6'];

tests/api-resources/messages/messages.test.ts

@@ -175,7 +175,7 @@ test('create: does not warn for non-deprecated models', async () => {
   await client.messages.create({
     max_tokens: 1024,
     messages: [{ content: 'Hello, world', role: 'user' }],
-    model: 'claude-opus-4-0',
+    model: 'claude-opus-4-6',
   });
 
   expect(consoleSpy).not.toHaveBeenCalled();