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Releases (13)
SWE-1.5 Free
January 11, 2026
Wave 13 brings first-class support for parallel, multi-agent sessions in Windsurf, along with Git worktrees, side-by-side Cascade panes, and a dedicated terminal profile for more reliable agent execution.Our near-frontier model, SWE-1.5, is now available for free to all users for the next 3 months. SWE-1.5 Free has the full intelligence of SWE-1.5, with the same coding performance on SWE-Bench-Pro, but delivered at standard throughput speeds. The original variant of SWE-1.5 hosted on Cerebras will continue to be available for paid users. SWE-1.5 Free will replace SWE-1 as the default model in Windsurf starting today.Windsurf now supports Git worktrees, letting you spawn multiple Cascade sessions in the same repository without conflicts. Git worktrees check out different branches into separate directories while sharing the same Git history.You can already run multiple Cascade sessions in Windsurf at the same time. Now, you can view and interact with them in separate panes and tabs within the same window. This lets you monitor progress and compare outputs of sessions side-by-side, or even turn Windsurf into a big Cascade dashboard.Windsurf introduces a new approach for letting agents execute terminal commands. Instead of your default shell, Cascade will now run commands in a dedicated zsh shell specifically configured for reliability. The Cascade Dedicated Terminal can use the environment variables you set in your .zshrc configuration and is interactive, which means you can answer any prompts from shell scripts without having to break your flow. This should improve the reliability and speed of shell commands, especially for users with complicated prompts (e.g., powerlevel10k).In this version, the Cascade Dedicated Terminal will be opt-in for Windsurf Stable on macOS. If you are experiencing issues with the older legacy terminal, we recommend switching to the new terminal early. We expect to make this feature the default in the future, while maintaining the legacy terminal extension for backwards compatibility purposes. You can opt-in in the Windsurf User Settings -> Disable Windsurf Legacy Terminal Profile.When a model's context window grows too long, earlier context can be dropped without warning and performance can degrade. Cascade already extends the window by occasionally summarizing messages and clearing history. This release adds a visual indicator to see how much of your context window is currently in use, helping you anticipate limits and decide when to start a new session.Execute custom commands at key points during Cascade's workflow, including on model response for auditing purposes.Enterprises can deploy rules and workflows via MDM policies, allowing organizations to place rules and workflows files on users' machines.
Features
- •Enhanced diff zone behavior with configurable scroll-to-next-hunk settings (default off)
- •Preserved colors and styling in Cascade terminal output
- •Multiple fixes to the Model Context Protocol implementation
- •Supports lowering permissions for Cascade's Web Fetch tool
- •Fix race condition in the dedicated terminal implementation
Agents & Tool Execution
January 11, 2026
Added a new "Promo" label to LLM models that are newly available or have special discount pricing
Features
- •Fixed Command-I functionality
- •Fixed Ctrl+C during tool execution not working properly
- •Fixed Go (fallback) processes not being killed properly
- •Fixed handling of parallel tool call errors
- •Improved MCP tool call visibility (show tool name, args, etc)
Cascade Hooks on User Prompts
January 11, 2026
Users can now configure Cascade Hooks on user prompts for logging all user prompts and blocking policy-violating prompts.
Features
- •Added support for GitLab remote MCP.
- •Added OAuth support for GitHub remote MCP.
- •Fixed an issue where every MCP would reauth on opening Windsurf.
- •Added support for MCP prompts
- •Added toggles to enable/disable MCPs in the Cascade header
Gemini 3 Pro
January 11, 2026
Note: The Autocomplete setting has been removed as it was a legacy option that had no effect. Windsurf's Tab autocomplete feature is powered by Supercomplete.
Features
- •Resolved an issue where Gemini 3 Pro caused internal Cascade errors for some users.
- •Fixed notebook tool functionality for SWE-1.5.
- •Addressed an issue where SWE-1.5 would unexpectedly stop or return "No response requested".
- •Added support for Sonnet 4.5 with a 1M token context window.
- •Reduced the frequency of unnecessary Markdown file creation by Sonnet 4.5.
MCP Improvements
January 11, 2026
GPT-5.1 and GPT-5.1-Codex are now available in Windsurf. GPT-5.1 will become the default model in Windsurf for one week, and paid users get free access during this period.GPT-5.1 and GPT-5.1-Codex deliver a solid upgrade from GPT-5 for agentic coding workflows. They're noticeably better at understanding what you're asking for and working with you to get it done. The new variable thinking feature dynamically adjusts reasoning depth—providing quick responses for simple tasks and more thoughtful analysis when complexity demands it.
Features
- •Loading state indicators: Show loading state per installed MCP to improve visibility during initialization.
- •Refresh only edited MCPs: When mcp_config.json is modified, only the affected MCP server instance is initialized/refreshed; no other instances are refreshed.
- •Increased initialization timeout: MCP initialization timeout increased to 60s.
- •Refresh button for error states: Show refresh button for MCPs in error state to allow manual recovery.
- •Cascade Hooks feature: New Cascade Hooks feature available to all tiers.
Expanded Codemaps
January 11, 2026
Codemaps now include powerful new capabilities:Improved Cascade summarization to better handle longer conversations. Previously, summaries could be too aggressive and drop important context. Now maintains better continuity across long sessions with multiple file changes and user messages.
Features
- •Chat with map - Interact directly with your codebase visualizations
- •Mermaid diagrams - Generate visual diagrams within maps for better code understanding
- •Cascade suggestions - Get AI-powered suggestions directly in your maps
- •Map option in chat/edit nudges - Easily create maps from chat and edit interactions
- •Smart mode option - Enhanced intelligent assistance when working with maps
Queued messages
January 11, 2026
Features
- •Users can now add follow-up messages to Cascade while it is working, and Cascade will process them in order after the current task is complete.
- •Cascade now renders mermaid diagrams in the conversation.
- •Windsurf Browser is now deprecated. We plan to refactor and release a replacement feature in the coming months. Please use Previews instead.
- •Made improvements to the sign up onboarding flow.
- •Various bug fixes and stability improvements.
Voice
January 11, 2026
Features
- •Users can now speak into the chat rather than having to type things out.
- •@-mention the first conversation so Cascade has full context of it as it goes to write tests for you.
- •Chat with Cascade about tabs that are open in the Browser using @-mentions
- •Planning Mode, Workflows, and file-based Rules are now available for Cascade on JetBrains
- •Now you can @-mention terminal in Cascade.
Terminal Improvements
January 11, 2026
Features
- •Send messages to Cascade in Planning Mode, a setting that will let Cascade plan before making edits
- •Cascade will create a plan.md file of the actions it plans to take before taking action
- •The plan is user-editable, and Cascade will pick up on user changes
- •Native terminal in Cascade panel
- •Terminal now accepts user inputs in the Cascade panel
BYOK (Anthropic Key)
January 11, 2026
Features
- •You can now bring your own API Key from Anthropic to use the Claude 4 Sonnet, Claude 4 Sonnet (Thinking), Claude 4 Opus, and Claude 4 Opus (Thinking) models in Cascade
- •To use BYOK, go to provide API keys and input your key
- •Once entered, go back to Windsurf and reload the window. You should now be able to use the new models
- •This is only available for Free and Pro users at this time
Cascade UX Improvements
January 11, 2026
Features
- •Redesigned Model Selector
- •Continue button when reaching individual tool call limit
- •Opening conversations will now open the associated workspace
- •Hunk accept/reject widget now has a compact mode to cover less code
- •Improvements to commit message generation quality