Claude Code v2.1.306
Claude Code v2.1.306 was released on .
Summary
Claude Code 2.1.306 is here: cloud sessions no longer falsely report "Not logged in" for claude -p, and big MCP tool setups stop getting misleading "prompt is too long" errors. Curious what else changed?
Release Context
- This was the 248th Claude Code release of 2026 tracked by Havoptic.
- It shipped the same day as Claude Code v2.1.305 (October 20, 2026).
- Claude Code: ships every 1.3 days — 23 releases in the last month.
Why it matters: Fixed: cloud sessions no longer falsely report "Not logged in.
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- Antigravity CLI v1.4.4 (October 21, 2026)
- Gemini CLI v0.65.0 (October 20, 2026)
- GitHub Copilot CLI v1.0.101 (October 20, 2026)
- Zed v1.24.4 (October 20, 2026)
- Antigravity CLI v1.4.3 (October 20, 2026)
Compare Claude Code
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- Claude Code vs Cursor
- Claude Code vs Gemini CLI
- Claude Code vs Kiro CLI
- Claude Code vs GitHub Copilot CLI
- Claude Code vs Devin Desktop
- Claude Code vs Antigravity CLI
- Claude Code vs Grok Build
- Claude Code vs Cline
- Claude Code vs OpenCode
- Claude Code vs Zed
- Claude Code vs Factory Droid
- Claude Code vs Devin
- Claude Code vs Lovable
- Claude Code vs Amp
- Claude Code vs GitHub Copilot in VS Code
- Claude Code vs Replit Agent
- Claude Code vs Bolt
- Claude Code vs v0
Release Notes
- Fixed claude -p inside cloud sessions reporting "Not logged in" when started without the session's environment variables
- Fixed an API error being replaced by "prompt is too long", and an unneeded compaction, in sessions with many MCP tools
Other Recent Claude Code Releases
- v2.1.304 (October 19, 2026)
- v2.1.303 (October 18, 2026)
- v2.1.302 (October 16, 2026)
- v2.1.301 (October 15, 2026)
- v2.1.300 (October 14, 2026)
All Claude Code releases · All AI coding tool releases on Havoptic