Thinking Machines Ousts CTO Barret Zoph. Hours Later, OpenAI Welcomed Him Home.

Mira Murati ousted CTO Barret Zoph for "unethical conduct." Hours later, OpenAI welcomed him back along with two other researchers. The competing narratives can't both be true.

Thinking Machines Ousts CTO Zoph; Three Return to OpenAI

Mira Murati announced at an all-hands on Thursday that Barret Zoph, the man she had recruited to build her startup's technical foundation, was out. "Unethical conduct," according to two sources who spoke to reporter Kylie Robison. The specifics: sharing confidential company information with competitors. Within hours, OpenAI's applications chief Fidji Simo posted a celebratory note welcoming Zoph, cofounder Luke Metz, and researcher Sam Schoenholz back to the company they had left sixteen months earlier.

If you're looking for the tell, it's in the timing. Simo's announcement said the move "has been in the works for several weeks." Murati's statement said nothing about weeks. It said "parted ways." The framing collision tells you everything.

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