Co-founder and head of xAI's Imagine team. Part of broader co-founder exodus — 9 of 11 original co-founders have now departed.

Co-founder. Part of broader exodus — 9 of 11 original co-founders have now left xAI.

Resigned over OpenAI's deal with the Pentagon. Opposed military applications of AI, particularly concerns about surveillance and lethal autonomy. Her departure triggered a 295% surge in ChatGPT uninstalls.

Co-founder who departed on Feb 27, 2026. Part of the broader exodus where 9 of 11 original xAI co-founders have now left.

Co-founder who led the reasoning team. Departed as part of broader xAI co-founder exodus.

Co-founder who led research and safety. Part of a broader exodus where 9 of 11 original xAI co-founders departed, amid concerns about Grok's safety failures including generation of non-consensual explicit images. The safety team was completely disbanded after his departure.

Departed from Anthropic alongside Mrinank Sharma during the February 2026 safety researcher exodus. Part of a wave of departures expressing concern about the gap between Anthropic's safety commitments and competitive pressures.

Departed from Anthropic alongside Mrinank Sharma during the February 2026 safety researcher exodus. Part of a wave of departures expressing concern about the gap between Anthropic's safety commitments and competitive pressures.

Warned 'the world is in peril.' Cited a disconnect between Anthropic's stated safety values and competitive pressures driving actual decisions.

Resigned over ChatGPT advertising plans. Wrote a New York Times op-ed warning that OpenAI would exploit users' intimate conversational data to serve targeted ads.

Left xAI to focus on AI safety research. Founded Babuschkin Ventures to work on alignment problems independently from capabilities labs.

Co-founder who departed to join Morph Labs, citing desire to pursue independent research. Part of the broader xAI co-founder exodus.

Said he's 'pretty terrified' by the pace of AI development. Called the pursuit of AGI a 'very risky gamble with the future of humanity.'

Led an 80+ person safety systems team. Departed after 7 years. Her exit marked the latest in a long string of safety researcher departures.

Said it became 'harder for me to trust that my work here would benefit the world.'

Departed the same day as CTO Mira Murati and CRO Bob McGrew.

Departed amid broader leadership exodus. Said she wanted 'to create the time and space to do my own exploration.' Left the same day as the Chief Research Officer and VP of Research.

Departed the same day as CTO Mira Murati and VP Research Barret Zoph, part of a coordinated senior leadership exodus.

Left to join Anthropic to 'deepen my focus on AI alignment and to start a new chapter where I can return to hands-on technical work.' Departed less than 3 months after the Superalignment team was dissolved.

Removed from leadership of the Preparedness team without public announcement. Reassigned to AI reasoning work. The Preparedness team was formed in Dec 2023 to evaluate catastrophic risks.

Said 'safety culture and processes have taken a backseat to shiny products' at OpenAI. Resigned the day after Sutskever. Joined Anthropic to continue alignment work.

Departed amid the broader safety staff exodus.

Departed amid the broader safety staff exodus.

Departed amid the broader Superalignment team exodus.

Departed amid the broader Superalignment team exodus.

Departed the AI governance team amid broader safety staff exodus.

Left the Superalignment team. Said 'I really didn't want to end up working for the Titanic of AI.'

Resigned to freely speak about the existential risks of AI. Warned of 10-20% probability of human extinction from AI. Said he regretted his life's work.

Laid off when Elon Musk eliminated the entire ~20-person META (ML Ethics, Transparency, and Accountability) team. Stated publicly: 'The team that was researching and pushing for algorithmic transparency and algorithmic choice... is gone.'

Laid off by Elon Musk during mass Twitter layoffs. Her entire ML Ethics, Transparency, and Accountability (META) team was eliminated. Had been building algorithmic fairness tools. Called the dissolution 'a loss for the industry.'

Left before Meta formally disbanded the Responsible Innovation Team in September 2022. The team had advised product teams on potential harms across societal issues. He was Meta's first-ever Director of Responsible Innovation.

Left to co-found Anthropic. Became Chief Science Officer focused on scaling laws and safety.

Left to co-found Anthropic. Concerned about governance and policy gaps in AI development.

Left to co-found Anthropic. Became Chief Architect focused on safe scaling.

Left to co-found Anthropic to focus on AI interpretability and safety research.

Left to co-found Anthropic over safety direction concerns at OpenAI.

Departed with Dario Amodei to co-found Anthropic. Concerned about the pace of scaling without proportional safety investment.

Left over disagreements about scaling AI without adequate safety research. Co-founded Anthropic to pursue a safety-first approach to AI development.