Dario Amodei

Dario Amodei is the chief executive and co-founder of Anthropic, the company behind the Claude model family. He started it in 2021 with his sister Daniela and a group of colleagues from OpenAI, where he had been vice president of research. The founding pitch has not changed since: frontier AI built with safety as the engineering constraint, not the press release.

The Mythos years

Amodei spent 2025 and 2026 steering Anthropic through its most consequential program: Mythos, the internal frontier tier that surfaced through a March 2025 leak and then through Project Glasswing, the controlled-access security program that grew from 11 partners to roughly 150 organizations. The full timeline is reconstructed in our Mythos chronicle.

On June 9, 2026 the program produced its first public product: Claude Fable 5, a Mythos-class model with consumer-grade safeguards. Amodei's bet is that the safety layer, not the capability ceiling, is what makes the release defensible. We unpack that mechanic in our guardrails analysis.

In 2026

Days before the launch, Anthropic filed confidentially for an initial public offering, capping a year that included a $65 billion Series H. Where the company goes from here is the question every competitor is now pricing in. Background: Anthropic's site and his Wikipedia profile.