December 2025 Summaries

Wave 13 of Windsurf introduces several new features and improvements aimed at enhancing user experience and productivity, including support for parallel, multi-agent sessions, Git worktrees, and multi-Cascade panes and tabs for improved session management. A significant update is the release of SWE-1.5 Free, a new variant of the near-frontier model SWE-1.5, available to all users at standard throughput speeds for the next three months, while the paid version continues to offer faster token processing. The update also includes the Cascade Dedicated Terminal, an opt-in feature for macOS users that runs commands in a dedicated zsh shell for greater reliability and speed. Additionally, a new context window indicator helps manage session limits, and numerous stability fixes and performance optimizations have been implemented since the previous version. These updates are designed to help users maximize efficiency and performance as the year concludes.

GPT-5.2 has been launched in Windsurf and is available to paid users at no additional credit cost for a limited period. It is heralded as a significant advancement in agentic coding, surpassing previous GPT models in intelligence and performance within its price range. Despite the modest version number increase, the improvements are substantial, making GPT-5.2 the default model for Windsurf and several key Devin operations. Users are encouraged to download the latest version on Windsurf to experience its capabilities.