Anthropic plans to move ahead with an initial public offering, according to The Wall Street Journal. The Journal reported that Anthropic intends to set a valuation range this week and begin trading on Thursday or Friday of next week.

Some institutional investors are pushing for a valuation below the $1.5 trillion target discussed as recently as last week, the report said. That target was itself lower than the $2 trillion figure floated a few months ago.

The report said OpenAI, Anthropic's main rival, was valued at $1.25 trillion last week after raising $11 billion in fresh capital. That was short of the $20 billion it had initially sought.

The source article also notes that the listing comes shortly after one of Nasdaq's biggest sell-offs and amid reports that a CEO central to the AI boom had an affair with a suspected Chinese spy. The article does not say how those developments affect Anthropic's listing.