AI drug design startup Chai Discovery raised $400M led by Index at a $3.8B valuation, as it positions its Chai models as AI infrastructure for pharmaceuticals (Michael J. de la Merced/New York Times)

Michael J. de la Merced / New York Times: AI drug design startup Chai Discovery raised $400M led by Index at a $3.8B valuation, as it positions its Chai models as AI infrastructure for pharmaceuticals — The fund-raising values the company at $3.8 billion and underscores investor interest in using artificial intelligence to tackle problems like drug discovery.