Anthropic, the maker of Claude, confidentially filed an S-1 registration statement with the SEC on June 1, 2026, signaling its intent to go public in what could be one of the largest IPOs in history. The move comes just days after the company closed a record-breaking $65 billion Series H funding round that valued it at $965 billion post-money — making it the most valuable private AI company ever.
The Series H was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with participation from Amazon, GIC, Capital Group, Coatue, and others. Anthropic’s run-rate revenue reportedly surpassed $47 billion in May 2026. The company has not disclosed its target IPO valuation or share pricing, though analysts expect the public listing could happen as early as fall 2026. The filing puts Anthropic ahead of OpenAI in the race to public markets, with both companies — along with SpaceX — expected to be potential trillion-dollar debuts this year.
Source
Coverage from The Guardian, Forbes, Anthropic, and Crunchbase.
Commentary
A $965 billion private valuation. $47 billion in annualized revenue. A confidential S-1 filing. The sheer scale of numbers around Anthropic’s trajectory would have seemed hallucinatory even two years ago. But here we are — the AI safety company that pitched itself as the responsible alternative to OpenAI is now beating OpenAI to the public markets.
The timing is strategic. By filing before OpenAI, Anthropic gets to set the narrative as the first major pure-play AI company to IPO, rather than being compared in OpenAI’s shadow. Whether the market can sustain multiple trillion-dollar AI company valuations is the bigger question. The $65 billion round was explicitly described as their final private raise — this is the end of the startup chapter and the beginning of something entirely different for AI as an industry.