Claude Code auto mode becomes default for Pro, Max, Team users

Key takeaway

• Anthropic is making auto mode the default in Claude Code for Pro, Max, and Team users starting August 14th, citing internal testing showing it blocks 89% of harmful actions compared to only 13.6% blocked by human reviewers.

• The move reflects confidence in auto mode's safety, though the company's claims of defeating prompt injection attacks remain unverified by independent security researchers.

3 Key Points

FAQ

When does auto mode become the default?

Auto mode becomes the default setting for new Claude Code sessions starting August 14th for Pro, Max, and Team plans.

What did Anthropic's testing show auto mode could block?

In a test of 1,053 paid users, auto mode blocked 89% of harmful actions that participants were prompted to approve midway through sessions, compared to only 13.6% of humans who refused the same harmful action.

Did third parties independently verify Anthropic's security claims?

Anthropic commissioned Trajectory Labs to test prompt injection scenarios; Trajectory Labs reported that none of 720 attack attempts succeeded against Claude Fable 5, Opus 5, or Sonnet 5 running auto mode. However, broader independent security community confirmation has not yet occurred.