Anthropic has launched Claude Fable 5 and Claude Mythos 5, introducing a new class of AI models designed for long-horizon, autonomous tasks. The release highlights the industrys shift toward agentic AI, combining breakthroughs in software engineering and scientific research with stringent safeguards aimed at mitigating emerging cybersecurity and biosecurity risks.

Anthropic’s new AI model brings long-horizon autonomy, first-shot accuracy, and stronger code review to GitLab.

Anthropic has released a full version of its cybersecurity-centric Claude Mythos model—along with a safer version for the general public.