Anthropic, the AI company behind the Claude chatbot, is planning to raise up to $64bn (£48bn) when it lists its shares for sale on New York's Nasdaq stock exchange.
The loss-making company said it will offer its shares for between $70 and $78 each in its initial public offering (IPO), which is expected to go ahead this month.
Anthropic is floating at a volatile time for AI businesses - following last week's US midterm elections, the Nasdaq fell sharply on concerns a Democrat-led Congress could slow development of the technology and the buildout of infrastructure such as data centres.
There are also wider fears over the billions of dollars being spent on AI and whether it will pay off.
Fiona Cincotta, a senior market analyst at City Index, said the amount Anthropic wants to raise is "fairly bullish" within "the volatility [and] concerns towards AI that we've seen in sort of particularly last week".