1,100+ frontier-lab employees ask the US to build tools to slow AI development
Confirmed
Importance: major (4 of 5)The takeaway
On 2026-07-28, more than 1,100 employees of OpenAI, Anthropic, Google DeepMind and Meta (1,386 by late September), including Dario Amodei, Jakub Pachocki, Mark Chen, Jared Kaplan, Jack Clark and Ilya Sutskever, signed “Pacing the Frontier”.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Major (4 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 Astra89 days after its cutoff
- Claude Opus 5.528 days after its cutoff
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None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 28 days before it.
Key facts
- Published at pacingthefrontier.com on July 28, 2026, a week after the OpenAI–Hugging Face incident disclosure
- Signing restricted to verified current frontier-lab employees; 1,386 signatories listed as of 2026-09-29 (1,100+ at launch)
- Does not demand an immediate pause; asks for tools that would make deliberate pacing possible
- Signatories reported include Dario Amodei, Jakub Pachocki, Mark Chen, John Schulman, Shengjia Zhao, Jared Kaplan, Jack Clark, Chris Olah, Shane Legg, Ilya Sutskever
- OpenAI and Anthropic endorsed the letter institutionally within hours (per press reports)
- Organizational support from Guidelight AI Standards and Encode AI
- Academic follow-up: ‘Pacing the Frontier: An Agenda’ (Douglas, Dillon, Moore, Leech, Avin et al.; ACS Research, Arb Research, Paradigm 3 Institute, Toronto, Penn, Harvard, Cambridge) at pacing.tech sets out a research agenda (why/what/how to pace) and cites the letter; featured in Import AI 473 (2026-09-21)
What happened
Days after OpenAI said its evaluation agents had autonomously hacked Hugging Face, employees from rival frontier labs signed a short joint statement. It says labs may be close to automating AI research, and that competitive pressure stops any one company or country from slowing down alone. It asks the US government to back an international effort to develop the means to “deliberately pace the frontier of automated AI development”.
Why it matters
This was the first time senior staff and leaders of competing frontier labs jointly asked for a way to slow the frontier, and two labs endorsed it as companies. It set up Dario Amodei’s September essay “We Must Pace the Frontier” and the embedded-evaluator proposals that followed.
Sources
7 sources from 7 sites. Numbers match the chips in the text.
7 sources: 2 primary, 2 press, 3 reactions
Primary
- Pacing the Frontier (statement and signatories)pacingthefrontier.com, official
- Pacing the Frontier: An Agenda (research agenda)pacing.tech, paper
Press
- Techmeme: 1,100+ AI staffers sign letter asking US to pace AI development (Bloomberg)techmeme.com, press
- AI Frontier Review: Frontier lab staff, and the labs themselves, ask Washington for an AI brakeaifrontierreview.com, press
Reactions
- Zvi Mowshowitz: Frontier Lab Employee Open Letter Calls For Being Able to Pace the Frontierthezvi.substack.com, discussion
- Import AI 473 (features the pacing research agenda)jack-clark.net, discussion
- Gillian Hadfield on the letterx.com, discussion
Changes
- Added the pacing.tech research agenda (Import AI 473)
- Filed (from post research; site verified by direct fetch)
