Anthropic Mythos outperforms GPT-5.5-Cyber in bug detection by 2026

Anthropic's Mythos model will achieve a higher success rate than GPT-5.5-Cyber in standardized cybersecurity penetration tests conducted by third-party labs. This prediction is based on Mythos's narrow lead in recent security testing and OpenAI's focus on defensive use cases.

Implied probability (Yes)

60%