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claude_code_releases · Sep 19, 2026 · release
Source brief
claude-code v2.1.278
github.comSep 19, 2026
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Release highlights
- Changed auto mode for Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, to default to the server-side classifier, which does not...
- Added an Auto mode server row to /status showing whether this session's auto mode classifier runs on the server