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# Claude Sonnet 4.6 is now available in Windsurf

CognitionFebruary 17, 20261 min read

Claude Sonnet 4.6 is now live in Windsurf with limited-time promotional pricing for self serve users:

- **No thinking:** 2x credits
- **With thinking:** 3x credits

> “For the first time, Sonnet brings frontier-level reasoning in a smaller and more cost effective form factor. It provides a viable alternative if you are a heavy Opus user.” - Jeff Wang, Windsurf CEO

> “Claude Sonnet 4.6 has meaningfully closed the gap with Opus on bug detection, letting us run more reviewers in parallel, catch a wider variety of bugs, and do it all without increasing cost.” - Scott Wu, Cognition CEO

Claude Sonnet 4.6 is also available in Arena Mode’s **Frontier** and **Hybrid** battle groups.

[Download the latest version of Windsurf](https://windsurf.com/download) to try out Claude Sonnet 4.6!

![Claude Sonnet 4.6 announcement banner](https://exafunction.github.io/public/images/blog/sonnet-4.6/sonnet-4.6-blog-card.png)