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AI SDK

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News analysisRelease: December 22, 2025Published: October 23, 20263 min read

AI SDK 6 moved agent loops, tool approval and MCP into one release

Vercel released AI SDK 6 on December 22, 2025, adding reusable agents, tool approval, structured output after tool calls, stable MCP support and DevTools.

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Original explanatory diagram

News analysisRelease: July 31, 2025Published: October 23, 20263 min read

Vercel AI SDK TypeScript agent frameworks

AI SDK 5 made the chat boundary and agent loop explicit in TypeScript

Vercel released AI SDK 5 on July 31, 2025, separating UI and model messages while adding typed chat data parts and configurable tool-calling loops.

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