Kalshi, a prediction market that allows people to bet on future events, announced that it raised over three hundred million dollars at a 5 billion dollar valuation. The company’s value has increased two and a half times since its last fundraise just three months ago, when it was valued at two billion dollars.

Thinking Machines Lab, the AI startup led by former OpenAI CTO Mira Murati, has lost one of its co-founders to Meta.

The Wall Street Journal reports that AI researcher Andrew Tulloch announced his departure to employees in a message on Friday. A Thinking Machine Labs spokesperson confirmed Tulloch’s departure to the WSJ, saying he “has decided to pursue a different path for personal reasons.”

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