What to know about the AI models that are jolting Washington

Press Escape to close the menu.

Researchers who have tested Anthropic’s Mythos and OpenAI’s GPT-5.5 say their hacking capabilities are a “game-changer.”

Those who have experimented with Mythos and GPT-5.5 in a controlled setting say the tools are advancing much faster than anticipated — and will change the digital security landscape forever. | Sebastien Bozon/AFP via Getty Images

Anthropic and OpenAI have spent the last month touting the hacking capabilities of their new artificial intelligence models.

Researchers with access to these tools say they’re not exaggerating — and warn that the fallout could be even larger than imagined, as tools such as Anthropic’s Claude Mythos and OpenAI’s GPT-5.5 continue to develop.