Sebastien Bubeck, Microsoft’s VP of GenAI research who is known for his work on Microsoft’s Phi small language models, is leaving the company to join OpenAI (Juby Babu/Reuters)

Juby Babu / Reuters:
Sebastien Bubeck, Microsoft's VP of GenAI research who is known for his work on Microsoft's Phi small language models, is leaving the company to join OpenAI  —  Microsoft (MSFT.O) on Monday said that its vice president of GenAI research, Sebastien Bubeck, is leaving the company to join ChatGPT-maker OpenAI.