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Anthropic's Claude Fable 5.2 Beats GPT-6 Cyber in Multi-Stage Cyberattack Benchmark

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Summary

Anthropic released Claude Fable 5.2 and Claude Mythos 5.2, which it says improve coding, reasoning and vision. On Irregular's CyScenarioBench, Fable 5.2 completed 76.3% of challenges, versus 61.7% for Fable 5.1 and 61% for OpenAI's GPT-6 Cyber.