Claude Code v2.1.108 Release Notes

Claude Code v2.1.108 introduces enhanced prompt caching controls, session recap features, improved slash commands, and numerous bug fixes for a better development experience.

April 14, 2026 • 10 min read • By ClaudeWorld

The Claude Code development team has released version 2.1.108, bringing significant improvements to prompt caching, session management, and overall user experience. This update focuses on enhancing productivity for power users while addressing critical bugs and performance issues.

What’s New

Enhanced Prompt Caching Controls

This release introduces new environment variables for fine-tuned prompt caching control:

  • ENABLE_PROMPT_CACHING_1H: Enables 1-hour prompt cache TTL across API key, Bedrock, Vertex, and Foundry
  • FORCE_PROMPT_CACHING_5M: Forces 5-minute TTL when needed
  • Note: ENABLE_PROMPT_CACHING_1H_BEDROCK is now deprecated but still supported

Session Recap Feature

A new recap functionality helps you pick up where you left off:

  • Automatically provides context when returning to sessions
  • Configurable via /config and manually invokable with /recap
  • Can be forced with CLAUDE_CODE_ENABLE_AWAY_SUMMARY when telemetry is disabled

Improved Slash Commands

  • Models can now discover and invoke built-in slash commands (/init, /review, /security-review) via the Skill tool
  • /undo is now an alias for /rewind for better usability
  • Enhanced /model command warns before mid-conversation model switches
  • Improved /resume picker defaults to current directory sessions (use Ctrl+A for all projects)

Better Error Handling

  • Server rate limits are now distinguished from plan usage limits
  • 5xx/529 errors include links to status.claude.com
  • Unknown slash commands now suggest the closest match
  • Added startup warnings when prompt caching is disabled

Performance Improvements

  • Reduced memory footprint for file operations and syntax highlighting
  • Language grammars now load on demand
  • Added “verbose” indicator for detailed transcript viewing (Ctrl+O)

Key Bug Fixes

  • Fixed paste functionality in /login code prompt
  • Resolved telemetry-disabled subscribers falling back to 5-minute cache TTL
  • Fixed Agent tool permission prompting issues
  • Corrected Bash tool output problems with comment-ending env files
  • Preserved session names and colors when using claude --resume <session-id>
  • Fixed various terminal escape code and unicode handling issues

How to Update

To update to Claude Code v2.1.108:

# Update via your package manager or download from GitHub
# Check your current version
claude --version

# Follow standard update procedures for your installation method

After updating, review your environment variables to take advantage of the new prompt caching options.