Anthropic is seeking a $1.4 trillion valuation in an IPO that would rank among the largest stock market debuts in history. The Claude AI maker plans to offer 825 million shares priced between $70 and $78, targeting up to $64.4 billion in capital. The company launched its investor roadshow on Tuesday with plans to go public next week, according to its SEC filing.

Anthropic has separately secured $26 billion in private investment from Google, Nvidia, Microsoft and AMD. The company reported $17 billion in third-quarter revenue, up from $1.4 billion a year earlier, and said it was on pace to generate about $81 billion in annual revenue. It has committed nearly $900 billion to computing costs with Amazon and Google to meet demand.

The $1.4 trillion valuation is lower than earlier estimates of $1.5 trillion to $2 trillion, as investor concerns grow about the company's infrastructure spending and AI stock volatility. Anthropic's IPO comes after AI stocks slid following last week's midterm elections, which gave Democrats control of both chambers of Congress and raised prospects of stricter AI regulation and data centre restrictions. The Nasdaq fell 5.5 percent on Thursday before recovering some losses.