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Assistants/Windsurf

Windsurf

Cognition / Codeium · ide · freemium

Agentic IDE experience (Devin Desktop) focused on Cascade flows and collaborative AI coding.

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Config files Windsurf has changed

Config you own — hooks, permission rules, MCP servers, settings — that releases below state a change to. Counted from the release notes we track, newest change first. How a harness is layered.

agent context files1 change · 2 releases touched it · latest Mar 9, 2026 · v1.9577.24 ↗

Release signals

Windsurfv1.9566.9Feb 25, 2026

New Model Picker

  • We introduced a new model picker that groups models by family and adds a hovercard with toggles for specific variants, like reasoning effort and speed.
  • Separately, we also added the ability to pin models.
  • Cascade Improvements
  • Added POST_CASCADE_RESPONSE_WITH_TRANSCRIPT cascade hook
  • Added Cascade hooks configuration visibility on team settings page
  • Reduced the priority of Git commits in @ mention search
  • Added a devin.cascade.readClaudeCodeConfig flag to disable reading Claude configuration
  • MCP Improvements
  • Added an MCP Refresh button
  • +8 more changes
Read the full release note

v1.9566.9 February 25, 2026 New Model Picker We introduced a new model picker that groups models by family and adds a hovercard with toggles for specific variants, like reasoning effort and speed. Separately, we also added the ability to pin models. Cascade Improvements

  • Added POST_CASCADE_RESPONSE_WITH_TRANSCRIPT cascade hook
  • Added Cascade hooks configuration visibility on team settings page
  • Reduced the priority of Git commits in @ mention search
  • Added a devin.cascade.readClaudeCodeConfig flag to disable reading Claude configuration MCP Improvements
  • Added an MCP Refresh button
  • Auto-trigger OAuth login when adding HTTP/SSE MCP servers
  • Fix bugs with parsing on Windows and startup Platform Improvements
  • Merged changes from VS Code 1.108
  • Improved startup reliability for Cascade
  • Fixed Windows update initialization path that could block updates
  • Released binaries for Linux ARM64 Download 1.9566.9
Primary source ↗
Windsurfv1.9552.21Feb 12, 2026

Cascade Improvements

  • Plan Mode now supports automatic switching back to Code Mode when you start implementing a plan
  • Added support for reading skills from the .agents/skills directory
  • Tracking triggered rules in the post_cascade_response hook via a new rules_applied field
  • Diff zones will now automatically close on commit
  • Linux ARM64 Support
  • Full Linux ARM64 client support with deb and rpm packaging
  • Enterprise & Team Improvements
  • Cloud configuration for Cascade Hooks is now available for enterprise teams via the cloud dashboard
  • Support for Devin service key authentication
  • +7 more changes
Read the full release note

v1.9552.21 February 12, 2026 Cascade Improvements

  • Plan Mode now supports automatic switching back to Code Mode when you start implementing a plan
  • Added support for reading skills from the .agents/skills directory
  • Tracking triggered rules in the post_cascade_response hook via a new rules_applied field
  • Diff zones will now automatically close on commit Linux ARM64 Support
  • Full Linux ARM64 client support with deb and rpm packaging Enterprise & Team Improvements
  • Cloud configuration for Cascade Hooks is now available for enterprise teams via the cloud dashboard
  • Support for Devin service key authentication Bug Fixes and Improvements
  • Fixes for post_write_code hooks to handle all code editing tool formats
  • Fixes and improvements for MCP server resource loading
  • Fixed osascript privilege escalation being incorrectly triggered on Linux for shell command installation
  • Addressed multiple memory leaks
  • Improved RTL language rendering in todo lists Download 1.9552.21
Primary source ↗
Windsurfv1.9544.35Feb 5, 2026

New Models

  • GPT-5.3-Codex-Spark is now available in Arena Mode’s Fast Arena and Hybrid Arena battle groups
  • Claude Opus 4.6 (fast mode)
  • Claude Opus 4.6 (fast mode) is now available in Windsurf in research preview with limited-time promotional pricing for self-serve users until Feb 16:
  • No thinking: 10x credits
  • With thinking: 12x credits
  • Opus 4.6 (fast mode) has the same intelligence as Opus 4.6 but with up to 2.5x higher output speeds.
  • Claude Opus 4.6
  • Claude Opus 4.6 is now available in Windsurf with limited-time promotional pricing for self-serve users:
  • +5 more changes
Read the full release note

v1.9544.35 February 5, 2026 New Models

  • GPT-5.3-Codex-Spark is now available in Arena Mode’s Fast Arena and Hybrid Arena battle groups Claude Opus 4.6 (fast mode) Claude Opus 4.6 (fast mode) is now available in Windsurf in research preview with limited-time promotional pricing for self-serve users until Feb 16:
  • No thinking: 10x credits
  • With thinking: 12x credits Opus 4.6 (fast mode) has the same intelligence as Opus 4.6 but with up to 2.5x higher output speeds. Claude Opus 4.6 Claude Opus 4.6 is now available in Windsurf with limited-time promotional pricing for self-serve users:
  • No thinking: 2x credits
  • With thinking: 3x credits Opus 4.6 is available in Arena Mode’s Frontier Arena and Hybrid Arena. Try it head-to-head against other frontier models to see how it performs on your real-world tasks. Download 1.9544.35
Primary source ↗
Windsurfv1.9544.26Jan 30, 2026

v1.9544.26 January 30, 2026

  • Bug Fixes and Improvements
  • Improve UI styling for announcement popups and notifications
  • Close model picker when selecting a battle group
  • Download 1.9544.26
Primary source ↗
Windsurfv1.9544.24Jan 30, 2026

v1.9544.24 January 30, 2026

  • Wave 14: Arena Mode
  • Arena Mode brings side-by-side model comparison directly into your IDE, plus Plan Mode for smarter task planning.
  • Arena Mode
  • Run two Cascade agents side-by-side with hidden model identities and vote on which performs better.
  • Arena Mode lets you discover which models actually work best for your workflow, codebase, and tasks—not just what benchmarks or influencers say.
  • Battle Groups : Choose specific models to compare or let Windsurf randomly select from curated groups like “fast models” vs “smart models”
  • +12 more changes
Read the full release note

v1.9544.24 January 30, 2026 Wave 14: Arena Mode Arena Mode brings side-by-side model comparison directly into your IDE, plus Plan Mode for smarter task planning. Arena Mode Run two Cascade agents side-by-side with hidden model identities and vote on which performs better. Arena Mode lets you discover which models actually work best for your workflow, codebase, and tasks—not just what benchmarks or influencers say.

  • Battle Groups : Choose specific models to compare or let Windsurf randomly select from curated groups like “fast models” vs “smart models”
  • Personal & Global Leaderboards : Your votes contribute to both a personal leaderboard (your preferences) and a global one (across all Windsurf users)
  • Sync or Branch : Send followup prompts to both agents simultaneously, or branch and explore different paths individually To get started, select the new Arena tab in the model picker. All battle groups are free for the first week for paid users. Plan Mode Plan Mode is a new Cascade mode alongside Code and Ask. Use it to create detailed implementation plans before diving into code. Pro tip : Type megaplan in the Cascade input box to trigger an advanced form that asks clarifying

Excerpt ends here — this release continues at the source ↗.

Primary source ↗
Windsurfv1.13.12Jan 23, 2026

v1.13.12 January 23, 2026

  • Enterprise Features
  • Enterprise admins can now specify organization-wide allow and deny lists for command auto-execution.
  • Learn more
  • Bug Fixes and Improvements
  • Bug fixes and performance improvements for diff zones
  • Improved overall stability and reliability
  • Added post_setup_worktree hook for initializing worktrees in Cascade
  • Download 1.13.12
Primary source ↗
Windsurfv1.13.9Jan 16, 2026

v1.13.9 January 16, 2026

  • Bug Fixes and Improvements
  • Improvements to GPT-5.2-Codex harness
  • Admins can now manage Windsurf restrictions via Windows Group Policy
  • Download 1.13.9
Primary source ↗
Windsurfv1.13.8Jan 14, 2026

v1.13.8 January 14, 2026

  • GPT-5.2-Codex
  • Adds support for GPT-5.2-Codex with four reasoning efforts (low, medium, high, and xhigh).
  • GPT-5.2-Codex is OpenAI’s latest model designed for agentic coding.
  • It excels at working in large codebases over long sessions.
  • For most tasks, we recommend using the medium reasoning effort.
  • Bug Fixes and Improvements
  • Various bug fixes and performance improvements
  • Improved stability and reliability
  • Download 1.13.8
Primary source ↗
Windsurfv1.13.6Jan 13, 2026

v1.13.6 January 13, 2026

  • New Features and Improvements
  • Windsurf now supports Agent Skills for Cascade.
  • Bug Fixes and Improvements
  • Various bug fixes and performance improvements
  • Improved stability and reliability
  • Download 1.13.6
Primary source ↗
Windsurfv1.13.5Dec 27, 2025

v1.13.5 December 27, 2025

  • Gemini 3 Flash
  • Gemini 3 Flash is now available for all users.
  • This model combines Gemini 3 Pro-grade reasoning with Flash-level speed and efficiency, making it ideal for agentic workflows and coding tasks.
  • Blazing Fast Responses : Experience near-instant feedback with 3x faster performance than previous generations, perfect for iterative development compared to Gemini 3 Pro
  • Superior Coding Intelligence : Outperforms even Pro-tier models on key coding benchmarks (78% on SWE-bench Verified), providing more accurate code generation and debugging
  • +5 more changes
Read the full release note

v1.13.5 December 27, 2025 Gemini 3 Flash Gemini 3 Flash is now available for all users. This model combines Gemini 3 Pro-grade reasoning with Flash-level speed and efficiency, making it ideal for agentic workflows and coding tasks.

  • Blazing Fast Responses : Experience near-instant feedback with 3x faster performance than previous generations, perfect for iterative development compared to Gemini 3 Pro
  • Superior Coding Intelligence : Outperforms even Pro-tier models on key coding benchmarks (78% on SWE-bench Verified), providing more accurate code generation and debugging
  • Deep Multimodal Understanding : Easily process complex video, data extraction, and visual Q&A tasks with frontier-level reasoning Bug Fixes and Improvements
  • Various bug fixes and performance improvements
  • Tab fixes and improvements Download 1.13.5
Primary source ↗

Polled sources

[codeium-changelog] Codeium / Windsurf related docs

Product page · not polled

https://docs.windsurf.com/windsurf/getting-started

[official-changelog] Windsurf Changelog

Product page · last read Oct 24, 2026

https://windsurf.com/changelog

[devin-desktop-changelog] Devin Desktop (Windsurf) Changelog

Product page · last read Oct 24, 2026

https://docs.devin.ai/desktop/changelog