November 2025 Summaries

Opus 4.5 has been introduced as a recommended model in Windsurf, marking it as the most advanced model available in the platform so far. During a limited-time offer, it is accessible at reduced Sonnet prices, costing only twice the credits compared to the previous Opus 4.1 model, instead of the usual twenty times. Users are encouraged to download the latest Windsurf version to explore Opus 4.5's capabilities, especially for long-running autonomous agentic tasks. Additionally, Opus 4.5 is now integrated into Devin's harness, providing an opportunity to experience its enhanced performance firsthand.

GPT 5.1, GPT 5.1-Codex, and GPT-5.1-Codex Mini are now accessible in Windsurf for all users, offering enhancements in agentic coding compared to GPT-5. The updated model is noted for being more steerable, less prone to overthinking, and improved in frontend design capabilities. It also boasts increased speed by dynamically adjusting its reasoning depth according to task complexity. GPT-5.1 will be the default model for a week after its release, and all paid users are granted free access for the first seven days. Users can download Windsurf to experience the latest models.