Claude Code v2.1.156
Claude Code v2.1.156 was released on .
Summary
- Fixed an issue when using Opus 4.8 where thinking blocks were modified, leading to API errors.
Release Context
- This was the 122nd Claude Code release of 2026 tracked by Havoptic.
- It shipped the same day as Claude Code v2.1.154 (May 28, 2026).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- GitHub Copilot CLI v1.0.56 (May 29, 2026)
- Kiro CLI v2.5.0 (May 29, 2026)
- Cursor v3.6 (May 29, 2026)
- GitHub Copilot CLI v1.0.55 (May 28, 2026)
- Gemini CLI v0.44.1 (May 28, 2026)
Compare Claude Code: vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI
Release Notes
- Fixed an issue when using Opus 4.8 where thinking blocks were modified, leading to API errors.
Other Recent Claude Code Releases
- v2.1.215 (July 19, 2026)
- v2.1.214 (July 18, 2026)
- v2.1.212 (July 16, 2026)
- v2.1.211 (July 15, 2026)
- v2.1.210 (July 14, 2026)
All Claude Code releases · All AI coding tool releases on Havoptic