Kevin Weil, the former chief product officer of OpenAI, has sought a valuation of at least $750 million for a new AI science startup, in the latest example of AI pushing into science.

Weil is aiming to raise $150 million in the round, according to three people with knowledge of the discussions. The details have not been finalized yet and could still change.

Weil did not respond to a request for comment.

Weil’s fundraising is a broader sign that AI’s next frontier is shifting from chatbots to science. A growing number of OpenAI and Google alums are launching startups that promise to accelerate scientific discovery, from designing new drugs to…