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 to try out Claude Sonnet 4.6!