LaunchDevelopersSeptember 19, 2026

Claude Code 2.1.278 defaults auto mode to server-side classifier

Read original source →code.claude.com

Claude Code 2.1.278 makes the server-side auto mode classifier the default for Claude API and Enterprise users plus Bedrock, Vertex, Foundry and gateways, removing classifier overhead charges. CLAUDE_CODE_AUTO_MODE_SERVER=0 opts out on Bedrock, Vertex, Foundry and gateways, and a new Auto mode server row in /status shows where the classifier runs.

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