- 2026-07-20claude-code#release#claude-code#sandbox
Claude Code 2.1.216 — sandbox filesystem toggle & auth-mode fixes
New sandbox.filesystem.disabled setting, faster long sessions, and fixes for auto-mode after OAuth expiry.
- 2026-07-12claude-code#feature#claude-code#review
Claude Code ultrareview — parallel multi-agent cloud review
Kick off a fleet of reviewers against a PR from your terminal.
- 2025-05-22claude#model#opus
Claude Opus 4 — the original Claude 4 flagship
Anthropic launched Opus 4 with stronger coding and agentic capabilities and a 200K-token context window.