Anthropic prepares IPO as Claude maker faces AI test

Anthropic, the San Francisco company behind the Claude chatbot, is preparing a stock market listing that will test investor confidence in the long-term finances of AI companies.

The company was founded in early 2021 by former OpenAI staff after disagreements over how artificial intelligence should be built. Its leaders include chief executive Dario Amodei and president Daniela Amodei, who had both worked on safety at OpenAI.

Anthropic’s IPO filing shows Amazon and Google parent Alphabet among its largest backers. Other participants include Founders Fund, Microsoft and Nvidia. In May, Anthropic raised $65 billion at a $965 billion valuation, according to the supplied figures.

The company’s early funding was linked to figures in the effective altruism movement, including Facebook cofounder Dustin Moskovitz and Skype cofounder Jaan Tallinn. Sam Bankman-Fried invested $500 million through FTX in non-voting shares; after FTX collapsed and Bankman-Fried was jailed, that stake was sold for $884 million to repay the exchange’s customers.

Anthropic has also clashed with the Pentagon over how Claude may be used. The company refused to allow domestic mass surveillance and lethal autonomous weapons. In February, President Donald Trump ordered federal agencies to stop using Anthropic’s technology, and Defense Secretary Pete Hegseth directed that the company be labeled a supply-chain risk.