# Vercel — AI SDK 4.2

- Company: Vercel (vercel.com)
- Announced: 2025-03-21T13:00:00+00:00
- Category: developer-tool-release
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://vercel.com/blog/ai-sdk-4-2
- Record: https://forck.live/items/20893-ai-sdk-4-2
- Subject: v0 / AI SDK / AI Gateway

Vercel released AI SDK 4.2, adding support for reasoning models across major providers, Model Context Protocol (MCP) clients for connecting to tools, message parts in useChat for handling mixed outputs, and image generation with language models like Google's Gemini 2.0 Flash.

## Evidence

Verbatim from https://vercel.com/blog/ai-sdk-4-2:

> The AI SDK now supports the Model Context Protocol (MCP), an open standard that connects your applications to a growing ecosystem of tools and integrations.

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Record: https://forck.live/items/20893-ai-sdk-4-2
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md