ReleasesClaude Code version history

Claude Code 2.1.251

Released

Claude Code 2.1.251 was released on August 28, 2026 with 71 documented changes.

What changed in Claude Code 2.1.251?

In our words, from the release notes — never copied.

  • The system now offers new events for monitoring and controlling model switches, enhancing session management for developers.
  • Users can now observe live streaming of foreground subagent tool calls and results through Remote Control, while new usage displays provide spend limit and prompt cache details.
  • Several security vulnerabilities related to file tool interactions, symlink handling, and plugin path validation have been patched to prevent unauthorized access.
  • Multiple fixes improve the reliability of sessions, including preventing conversations from getting stuck and resolving issues with model requests when thinking is disabled.
  • Improvements have been made to CPU usage during interactive turns, and the native binary size has been reduced by approximately 7.5 MB.
  • Default behaviors for models, subagents, and command execution in sandboxed environments have been updated to enhance consistency and security.

Is this the latest version?

This page is frozen to Claude Code 2.1.251 and stays at this address. The Claude Code version history always lists the newest tracked version first.

Summarized by Claude Network from GitHub. Last verified .