The rivalry between OpenAI CEO Sam Altman and Anthropic CEO Dario Amodei, who skipped joining hands during group photo at AI Summit, dates back to 2020. Dario Amodei, who was then-VP of Research at OpenAI, left the company with several high-level employees over strategic direction concerns, and co-founded Anthropic. At Super Bowl 2026, Anthropic ran commercials mocking ads in ChatGPT.