Anthropic has overtaken its main competitor OpenAI in valuation on secondary markets, with the artificial intelligence firm hitting a $1 trillion valuation on Forge Global, a financial platform for trading shares in private companies.
The figure is considerably higher than the $380 billion valuation Anthropic secured during a funding round three months ago. In contrast, OpenAI, the creator of ChatGPT, is currently trading at around $880 billion on Forge Global, roughly equivalent to its latest funding round valuation of $852 billion.
The inflated value of Anthropic, which operates the Claude chatbot, appears driven by a shortage of available shares. Shareholders have reported being inundated with unsolicited offers for their stakes. Anthropic investor Jesse Leimgruber wrote on X: 'Just got offered a $1.05 trillion valuation on my Anthropic shares from a very well known growth fund. Absolutely wild.'
Investor interest has been fuelled by Anthropic's rapid revenue growth, with its annualised run rate rising from $9 billion in late 2025 to $39 billion in March 2026, according to figures seen by Business Insider. The growth has been supported by mass adoption of its Claude Code tool among developers and partnerships with tech giants such as Amazon and Palantir.
Bradley Horowitz, a partner at Wisdom Ventures and an early investor in Anthropic, told the publication: 'We receive daily offers, from the ridiculous to the sublime. It’s almost less about the return than being able to say they’re an Anthropic investor.' Rainmaker Securities CEO Glen Anderson, who received an offer to buy shares at a $960 billion valuation, added: 'It’s been an epic run for Anthropic. Everybody wants to be part of a generational opportunity in AI, and right now, Anthropic is in the pole position.' Some individuals have even offered to exchange property for Anthropic shares, according to a LinkedIn post.
