Windsurf has shipped Wave 13, moving its Cascade coding agent into parallel work. The release adds multi-agent sessions, Git worktrees, and a layout that lets you dock multiple Cascade sessions in panes or tabs to monitor agents side by side.
Git worktree support is the backbone: each agent can work on its own branch checked out into a separate directory while sharing Git history, reducing conflicts when several agents touch the same repo. Wave 13 also adds a context window indicator plus Cascade Hooks to run custom commands at key workflow points. Enterprises can deploy rules and workflows via MDM policies.
Introducing Wave 13: Shipmas Edition 🎅
— Windsurf (@windsurf) December 24, 2025
- SWE-1.5 Free: The full intelligence of SWE-1.5 at standard throughput, for free for the next 3 months
- True parallel agents with Git Worktrees + multi-pane and multi-tab Cascade
- Dedicated terminal for more reliable command execution… pic.twitter.com/JmMBlTUUXg
It also introduces the Cascade Dedicated Terminal (beta). Instead of the user’s default shell, agent commands run in a dedicated zsh profile, including interactive prompts and access to .zshrc environment variables. On Windsurf Stable, it is opt-in on macOS by disabling the legacy terminal profile. SWE-1.5 is free for all users for the next three months, with the same stated SWE-Bench-Pro coding performance, and it becomes the default model now.
Windsurf is the AI-native editor from Cognition, built around the Cascade agent and Tab-based autocomplete, with a standalone Editor plus IDE integrations. Developers such as Avi Schiffmann have praised its flow-first UX, and Wave 13 targets teams that want multiple agents running in the same repo without stepping on each other.
