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Claude Code v2.1.36 Release Notes

Claude Code v2.1.36 introduces Fast Mode for Opus 4.6, delivering enhanced performance for power users.

February 7, 2026 10 min read By ClaudeWorld

We’re excited to announce the release of Claude Code v2.1.36, bringing a significant performance enhancement to our Opus 4.6 users. This update focuses on delivering faster execution speeds through the newly available Fast Mode feature.

What’s New

Fast Mode for Opus 4.6

The highlight of this release is the introduction of Fast Mode for Opus 4.6 users. This new feature is designed to accelerate code execution and improve overall development workflow efficiency. Fast Mode optimizes processing speed while maintaining the high-quality output that Opus users expect.

Key benefits of Fast Mode include:

  • Reduced execution time for complex operations
  • Improved responsiveness during code generation
  • Enhanced productivity for power users working on large projects
  • Seamless integration with existing Opus 4.6 workflows

To learn more about Fast Mode and how to enable it, visit our comprehensive documentation at https://code.claude.com/docs/en/fast-mode

How to Update

To update to Claude Code v2.1.36:

  1. Check your current version in the application settings
  2. Download the latest version from the official repository
  3. Follow the standard installation procedure for your operating system
  4. Restart the application to ensure all changes take effect

If you’re using auto-updates, the new version should be available automatically.