Claude Code v2.1.278: Auto Mode Defaults to the Server-Side Classifier
Claude Code v2.1.278 makes the server-side classifier the auto mode default for Claude API and Enterprise users and on Bedrock, Vertex, Foundry and gateways, and adds an Auto mode server row to /status.
Claude Code v2.1.278 is a small release with two changelog entries, both about where auto mode’s classifier runs. It changes the default for several account types and providers, and adds a way to check which classifier your current session uses.
What’s New
Auto mode defaults to the server-side classifier
For Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, auto mode now defaults to the server-side classifier, which does not charge for classifier overhead. On Bedrock, Vertex, Foundry and gateways you can opt out with CLAUDE_CODE_AUTO_MODE_SERVER=0, and Claude Code warns you when it falls back to a billed path. The auto mode classifier billing documentation has the details.
Auto mode server row in /status
/status now includes an Auto mode server row showing whether the current session’s auto mode classifier runs on the server.
How to Update
- Check your installed version:
claude --version - Update in place:
claude update - If you use auto mode, run
/statusafter updating to see whether your session’s classifier runs on the server. On Bedrock, Vertex, Foundry or a gateway, setCLAUDE_CODE_AUTO_MODE_SERVER=0if you want to opt out of the new default.