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Mini toolsPetri 2
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Overview
Petri 2.0 is Anthropic’s upgraded behavioral auditing framework that probes LLMs in realistic multi-turn scenarios, adding eval-awareness mitigations, a larger seed library and new comparisons across recent frontier models.
Description
Petri 2.0 is Anthropic’s updated automated behavioral auditing framework for LLMs. It runs large suites of realistic, model-generated multi-turn scenarios and adds eval-awareness mitigations such as realism classifiers and seed refinements so models cannot easily detect they are being tested. The release also expands the scenario library and reports new safety and alignment comparisons across recent frontier models.
About Anthropic PBC
Anthropic is a technology company specializing in artificial intelligence and machine learning solutions.
Industry:
Research Services
Company Size:
2300-2900
Location:
San Francisco, California, US
Website:
anthropic.com
Last updated: January 27, 2026
