Resigned over OpenAI's deal with the Pentagon, citing insufficient deliberation around guardrails — specifically surveillance without judicial oversight and lethal autonomy without human authorization. The Pentagon deal had already triggered a 295% surge in ChatGPT uninstalls before her departure.

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

Resigned after seven months citing severe burnout from frontier AI work. Publicly stated: 'Today, I finally feel the existential threat that AI is posing. When AI becomes overly good and disrupts everything, what will be left for humans to do? And it''s when, not if.'

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.

Fired while leading the product policy team that develops safeguards. Had opposed ChatGPT's planned 'adult mode' feature. OpenAI cited a discrimination allegation from a colleague as the reason for termination; Beiermeister denied the allegation and said it was retaliation for raising safety concerns.

Left after concluding it had become difficult to publish research that didn't align with OpenAI's commercial interests. Accused the economic research team of functioning as a 'de facto advocacy arm' rather than conducting genuine research, specifically citing suppression of findings about AI's negative economic impacts.

Left xAI and founded Babuschkin Ventures, a venture capital firm investing in AI and agentic systems. Part of the broader xAI co-founder exodus where 9 of 11 original co-founders departed.

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.'

Said 'Neither OpenAI nor any other frontier lab is ready' for AGI. Noted OpenAI placed increasingly restrictive limits on what he could publish. The AGI Readiness team was disbanded after his departure.

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 over concerns about copyright law violations in ChatGPT's training data. Said 'If you believe what I believe, you have to just leave the company.' Became a whistleblower. Found dead in his apartment on November 26, 2024.

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.

Departed after the Superalignment team was dissolved.

Departed after the Superalignment team was dissolved.

Departed after the Superalignment team was dissolved.

Departed after the Superalignment team was dissolved.

Departed after the Superalignment team was dissolved.

Departed after the Superalignment team was dissolved.

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.

Co-led the Superalignment team and was involved in the attempted board ouster of Sam Altman in Nov 2023. After the board crisis resolved in Altman's favor, Sutskever departed and founded Safe Superintelligence Inc. (SSI).

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.

Fired after raising cybersecurity concerns internally and sharing a security memo with board members. OpenAI cited a separate alleged information leak as the reason for termination; Aschenbrenner said the security memo was a major factor. Later published the influential 'Situational Awareness' essay arguing AGI is imminent and labs are unprepared.

Lost confidence in OpenAI leadership's ability to handle AGI responsibly. Forfeited approximately $1.7M in vested equity by refusing to sign a non-disparagement agreement.

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

Resigned because he disagreed with Stability AI's position that training generative AI models on copyrighted works constitutes 'fair use.' Wrote: 'Companies worth billions of dollars are training generative AI models on creators' works without permission... this is not acceptable.'

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.

Departed alongside Alex Hanna to join Timnit Gebru's DAIR Institute as Director of Research. The dismissals of Gebru and Margaret Mitchell weighed heavily on his decision to leave.

Resigned from Google's Ethical AI team after the firings of Timnit Gebru and Margaret Mitchell. Said the company was not serious about ethical AI research. Joined Gebru's DAIR Institute.

Leaked tens of thousands of internal Facebook documents to the SEC and Wall Street Journal, revealing that Meta knew its algorithms amplified hate speech and harmed teen mental health. Testified before Congress. The Civic Integrity team was dissolved after the 2020 election.

Left to found the Alignment Research Center (ARC) to focus on theoretical alignment research outside the constraints of a capabilities lab.

Fired after searching company emails for evidence of discrimination related to Timnit Gebru's ouster. Google cited violations of security policies.

Resigned citing Google's mistreatment of Timnit Gebru. Part of the wave of protest resignations following the Ethical AI team leadership firings.

Resigned after 16 years at Google in protest of Timnit Gebru's firing. Said her exit 'extinguished my desire to continue as a Googler' and added: 'We cannot say we believe in diversity, and then ignore the conspicuous absence of many voices from within our walls.'

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.

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.

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

Forced out after co-authoring a paper on the harms of large language models ('On the Dangers of Stochastic Parrots'). Google objected to publication and demanded she retract or remove her name.

Resigned citing retaliation for organizing the 2018 Google Walkout protesting sexual misconduct handling. Said Google forced her to 'abandon her work' on AI ethics. Wrote: 'It's clear Google isn't a place where I can continue this work.' Co-founded the AI Now Institute at NYU.