Claude Code 2.1.41

February 13, 2026

Added

Added guard against launching Claude Code inside another Claude Code session
Added `speed` attribute to OTel events and trace spans for fast mode visibility
Added `claude auth login`, `claude auth status`, and `claude auth logout` CLI subcommands
Added Windows ARM64 (win32-arm64) native binary support

Improved model error messages for Bedrock/Vertex/Foundry users with fallback suggestions
Improved `/rename` to auto-generate session name from conversation context when called without arguments
Improved narrow terminal layout for prompt footer

Fixed Agent Teams using wrong model identifier for Bedrock, Vertex, and Foundry customers
Fixed a crash when MCP tools return image content during streaming
Fixed /resume session previews showing raw XML tags instead of readable command names
Fixed plugin browse showing misleading "Space to Toggle" hint for already-installed plugins
Fixed hook blocking errors (exit code 2) not showing stderr to the user
Fixed file resolution failing for @-mentions with anchor fragments (e.g., `@README.md#installation`)
Fixed FileReadTool blocking the process on FIFOs, `/dev/stdin`, and large files
Fixed background task notifications not being delivered in streaming Agent SDK mode
Fixed cursor jumping to end on each keystroke in classifier rule input
Fixed markdown link display text being dropped for raw URL
Fixed auto-compact failure error notifications being shown to users
Fixed permission wait time being included in subagent elapsed time display
Fixed proactive ticks firing while in plan mode
Fixed clear stale permission rules when settings change on disk
Fixed hook blocking errors showing stderr content in UI