# Claude Code 2.1.42

Captured: 2026-05-10T16:27:28.326Z

- Improved startup performance by deferring Zod schema construction
- Improved prompt cache hit rates by moving date out of system prompt
- Added one-time Opus 4.6 effort callout for eligible users
- Fixed /resume showing interrupt messages as session titles
- Fixed image dimension limit errors to suggest /compact
