SIRumors
UpdateSep 19, 2026 ·

Claude Code 2.1.278 is out

A new stable version of Claude Code is available.

Anthropic

Claude Code 2.1.278 was published on Sep 19, 2026. It is a stable release, not a preview.

Published
Sep 19, 2026
AnthropicCodex & CodingDiscuss in the forums →

More on Anthropic

  1. Sep 22Claude Opus 5.5 is outReleased
  2. Sep 22Claude: a banked usage reset you can use any timeBanked reset
  3. Sep 14Claude Code 2.1.271 is outUpdate
  4. Sep 23Inside Anthropic's molecular biology labOfficial video
  5. Sep 24Claude Code 2.1.282 is outUpdate
  6. Sep 28Claude Sonnet 5.5 is outReleased