Anthropic-Physical Intelligence acquisition rumor spreads fast, CEO denies it

The Anthropic-Physical Intelligence rumor roiling AI Twitter

A weekend rumor claimed Anthropic was buying robotics startup Physical Intelligence. The CEO denied it quickly. Physical Intelligence, co-founded by Lachy Groom, has raised over $1B and was reportedly in talks for another $1B round at an $11B valuation. Its π0.5 model is widely used in robotics research. The article confirms the two sides did hold acquisition talks, but doesn't disclose terms or why they broke down. The rumor spread fast partly because both Anthropic and OpenAI have been on acquisition sprees this year.

Why it matters: Anthropic acquisition rumor with confirmed failed talks hits all three HKR axes. But terms and breakup reason are undisclosed, so information density is thin — lands right at the featured threshold.