Anthropic's Mythos: Most Powerful/Dangerous AI Held Back
Key Questions
What is Anthropic's Mythos model?
Anthropic's Mythos is an unreleased AI model featuring exceptional cyber capabilities, including zero-day vulnerabilities across all major operating systems. It marks the biggest benchmark leap in three years and is shared only for defense purposes amid AI scaling races and geopolitical risks.
Why is the Mythos model being held back from release?
Due to its powerful and potentially dangerous cyber abilities, Mythos remains unreleased. Anthropic is limiting it to defense-only sharing to mitigate risks from competitive scaling and international tensions.
How does Mythos compare to OpenAI's latest models?
OpenAI's GPT-5.5 narrowly outperforms Anthropic's Claude Mythos Preview on Terminal-Bench 2.0. This highlights Mythos as one of the most competitive models despite its unreleased status.
Unreleased model with insane cyber capabilities (zero-days in all major OSes), biggest benchmark leap in 3 years; defense-only sharing amid scaling races and geopolitical risks.