Release notes

Claude Code 2.1.42

· 1 new· 2 fixed

Added1

  • Added one-time Opus 4.6 effort callout for eligible users

Improved2

  • Improved startup performance by deferring Zod schema construction
  • Improved prompt cache hit rates by moving date out of system prompt

Fixed2

  • Fixed /resume showing interrupt messages as session titles
  • Fixed image dimension limit errors to suggest /compact

Never miss a Claude Code release.

Get a push notification the moment the next version ships.

Get Claude Drops

New to the changelog? Read our guide to reading the Claude Code changelog or browse all releases.