AI SDK

Vercel AI SDK continues deepening its provider ecosystem and experimental capabilities. The team added structured output callbacks to the core SDK, introduced service tier parameters for Google providers, and shipped maas model support across Google Vertex in multiple release tracks. Provider-specific fixes landed across Bedrock, XAI, and OpenAI—correcting tool call finish reasons, supporting file-URL parts in tool outputs, and adding tool search capabilities for Anthropic—while the gateway provider gained spend reporting and generation retrieval features. A broad infrastructure update fixed template validation across 50+ packages in the beta track, establishing a stricter contract for provider kind parameters.