@tanstack/ai-grok@0.22.0

Minor Changes

• #1739 a0150c2 - Text adapters now set one stable code on RUN_ERROR when the input does not fit in the model's context window: code: 'context_overflow'. @tanstack/ai exports it as CONTEXT_OVERFLOW_CODE. The provider's own text stays in message.

  if (chunk.type === 'RUN_ERROR' && chunk.code === CONTEXT_OVERFLOW_CODE) {
    // shorten the messages, then call chat() again
  }

  These adapters set it: OpenAI and the other OpenAI-compatible adapters (from code: 'context_length_exceeded'), Anthropic, Gemini, Bedrock (Converse, Chat Completions, and Responses), OpenRouter, Grok, Cloudflare Workers AI, and BytePlus.

  Changes to code that reads the old values:

  • OpenAI-compatible adapters gave code: 'context_length_exceeded'. They now give 'context_overflow'. rawEvent still has the provider's code.
  • Anthropic, Grok, OpenRouter, and BytePlus gave the HTTP status or a general bad-request code for this error. Gemini and Bedrock Converse gave no code.
  • The Anthropic adapter now sends RUN_ERROR with this code when the model stops with stop_reason: 'model_context_window_exceeded'. Before, it sent RUN_FINISHED with finishReason: 'stop', so a cut-off answer looked complete.

• #1692 7532b2b - Set reasoning with chat({ reasoning }).

  • The adapter sends the level as reasoning.effort, with a summary.
  • Each chat model has its reasoning data in model-meta.ts. GrokModelReasoningByName and GROK_MODEL_REASONING come from it. grok-build-0.1 takes no reasoning, because the xAI API refuses it.

  Breaking: reasoning is no longer in modelOptions. GrokReasoning, GrokReasoningEffort, and GrokBuildProviderOptions are removed.

  // Before
  chat({
    adapter: grokText('grok-4.3'),
    messages,
    modelOptions: { reasoning: { effort: 'high' } },
  })
  
  // After
  chat({ adapter: grokText('grok-4.3'), messages, reasoning: 'high' })

Patch Changes

• #1692 7532b2b - Send chat({ toolChoice }) to each provider.

  • Anthropic and Bedrock Converse. Claude Fable 5.1, Mythos 5.1, Opus 5.5, and Sonnet 5.5 reject a forced tool, and every Claude model rejects one while thinking is on. On those, 'required' and a named tool fall back to auto.
  • Bedrock Converse has no none. 'none' sends no tool config. Bedrock refuses tool calls in the history without a tool config, so the history goes out as text.
  • Gemini maps the choice to functionCallingConfig (AUTO, NONE, ANY, and allowedFunctionNames). With only provider tools, such as Google Search, it sends no tool config.
  • OpenAI and Azure OpenAI (Responses), Grok, Mistral, and OpenRouter (Chat Completions and Responses) send their own tool_choice shape.

• Updated dependencies [1bfcee3, b881627, 412b0fe, a0150c2, 20954cc, b881627, fac0555, 6774e80, 5bd27f2, c20f7b0, cef1911, 51f72fb, 6f1e559, eb4eea0, cef1911, 7532b2b, 7532b2b, 1bfcee3, 78edeb2, 44e3a0a, 7532b2b, ce99a17, 7a5c0d6, b881627]:

  • @tanstack/ai@0.69.0
  • @tanstack/openai-base@0.14.0
  • @tanstack/ai-utils@0.4.2