Petri automates multi-turn model behavior audits
Anthropic open-sourced Petri, which turns natural-language risk hypotheses into parallel multi-turn audits with simulated users and tools. Auditor and judge models surface transcripts for behaviors such as deception, reward hacking and self-preservation.
Why it matters: Safety teams can explore many behavioral hypotheses quickly while preserving the underlying conversations for expert inspection instead of relying only on aggregate scores.