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Igor Babuschkin’s last day at the company was today, he announced on X, writing that he wants to “continue on my mission to bring about AI that’s safe and beneficial to humanity.” He said he would start a firm called Babuschkin Ventures, which will focus on “AI safety research and backs startups in AI and agentic systems that advance humanity and unlock the mysteries of our universe.”

CEO Sam Altman wrote on X that OpenAI plans to update the model to “feel warmer than the current personality but not as annoying (to most users) as GPT-4o.” He added, “One learning for us from the past few days is we really just need to get to a world with more per-user customization of model personality.”

Sara Hooker, who spent five years at Google DeepMind before joining Cohere in 2022 to lead its research lab, said she made the decision to leave two months ago. The news comes amid a huge shake-up for research talent in the AI industry.

The search-engine-indexing feature recently went viral online — if you knew where to look, anyone on the internet could access public ChatGPT logs where people seemed to confess to crimes, share trade secrets, and more potentially damning scenarios.