[!CAUTION] Breaking Changes

• Moving forward, TensorZero will use the OpenAI API's error format ({"error": {"message": "Bad!"}) instead of TensorZero's error format ({"error": "Bad!"}) in the OpenAI-compatible endpoints.

[!WARNING] Planned Deprecations

• When using unstable_error_json with the OpenAI-compatible inference endpoint, use tensorzero_error_json instead of error_json. For now, TensorZero will emit both fields with identical data. The TensorZero inference endpoint is not affected.

New Features

• Add native support for provider tools (e.g. web search) to the Anthropic and GCP Vertex AI Anthropic model providers. Previously, clients had to use extra_body to handle these tools.
• Improve handling of reasoning content blocks when streaming with the OpenAI Responses API.
• Handle inferences with missing usage fields gracefully in the OpenAI model provider.
• Improve error handling across the UI.

& multiple under-the-hood and UI improvements!