More than 1,100 employees at four frontier labs asked the US government to build a way to pace AI development

A statement titled "Pacing the Frontier", published 28 July 2026, asks that "the U.S. government support an international effort to develop the technical and governance tools needed to deliberately pace the frontier of automated AI development". The signatories are employees of OpenAI, Anthropic, Google DeepMind and Meta AI, among them Anthropic chief executive Dario Amodei, co-founders Jack Clark and Jared Kaplan, OpenAI chief scientist Jakub Pachocki, Meta chief scientist Shengjia Zhao and Google DeepMind safety and alignment lead Anca Dragan. Reported counts ran from about 1,100 to 1,224 across outlets depending on when each pulled the number, because the statement stayed open for signature. The ask is explicitly not to slow down today but to have a pacing mechanism ready before frontier models meaningfully accelerate their own development; Meta's Mark Zuckerberg publicly disagreed with the framing even as his own chief scientist signed.

What it means Nothing about your model access, rate limits or roadmap changes this week; what is worth tracking is whether the international effort it asks for turns into a concrete proposed mechanism — reporting requirements, capability thresholds, a coordination body — because that is the point at which it stops being a signal and becomes a constraint you would plan around.