What's new in Claude Code — v2.1.94
Mantle for Bedrock, smarter defaults, and cleaner hooks
A small but useful release focused on enterprise setup, plugin behavior, and less confusing agent feedback.
The sheet now includes CLAUDE_CODE_USE_MANTLE=1, which enables Mantle-backed Amazon Bedrock flows. If you use Bedrock in a managed or enterprise setup, this is the most important change in the release.
Default effort moved from medium to high for API-key, Bedrock/Vertex/Foundry, Team, and Enterprise users. In practice: better first-pass answers, but also a stronger reason to understand effort settings instead of leaving them implicit.
Custom output styles can now preserve Claude Code’s built-in coding behavior with keep-coding-instructions. That matters if you’re building opinionated styles but don’t want to accidentally throw away useful default coding guidance.
Hooks can now set hookSpecificOutput.sessionTitle, and long 429 retry waits are surfaced earlier instead of looking like the agent is frozen. Slack send-message feedback is also cleaner in the UI.
This release is less about flashy new commands and more about better defaults, better enterprise setup paths, and fewer subtle footguns. If you use Bedrock, plugins, hooks, or shared team environments, v2.1.94 is worth a quick scan.
