# Vercel — Collaborating with Anthropic on Claude Sonnet 4.5 to power intelligent coding agents

- Company: Vercel (vercel.com)
- Announced: 2025-09-29T13:00:00+00:00
- Category: availability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://vercel.com/blog/collaborating-with-anthropic-on-claude-sonnet-4-5
- Record: https://forck.live/items/20813-collaborating-with-anthropic-on-claude-sonnet-4-5-to-power-intelligent-coding
- Subject: v0 / AI SDK / AI Gateway
- Models affected: Claude Sonnet 4.5

Vercel made Anthropic's Claude Sonnet 4.5 available on its AI Gateway and AI SDK, and released an open-source Coding Agent Platform template that defaults to using the model. Internal evaluations showed the model outperformed its predecessor on Next.js builds, linting, and feature implementation tasks.

## Evidence

Verbatim from https://vercel.com/blog/collaborating-with-anthropic-on-claude-sonnet-4-5:

> Claude Sonnet 4.5 is now available on Vercel AI Gateway with full support in AI SDK . We’ve been testing the model in v0 , across our Next.js build pipelines, and inside our new Coding Agent Platform template.

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Record: https://forck.live/items/20813-collaborating-with-anthropic-on-claude-sonnet-4-5-to-power-intelligent-coding
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