Anthropic's Claude Fable Outpaces GPT-6 Cyber in Cyberattack Benchmarks Anthropic's Claude Fable 5.2 completed 76.3% of simulated cyberattack challenges, outpacing GPT-6 Cyber in benchmark tests, according to the reported results. The benchmark measures the model's ability to plan and execute complex cyber operations in a realistic environment. Anthropic's Claude Fable 5.2 just set a new standard in cybersecurity, outpacing GPT-6 Cyber in benchmark tests by successfully completing 76.3% of simulated cyberattack challenges. This impressive leap forward showcases Fable 5.2's advanced ability to plan and execute complex cyber operations in a realistic environment.