TL;DR

More than 1,100 employees from leading technology firms have signed a statement calling on the US government to support an international effort to build the technical and governance tools needed to pace advanced AI development. The initiative, called Pacing the Frontier, draws signatories from Meta, Anthropic, OpenAI and Google, backed by the nonprofits Guidelight AI Standards and Encode AI.

What distinguishes this from the usual open letter is who signed it. The list includes Anthropic chief executive Dario Amodei and several co-founders, OpenAI chief scientist Jakub Pachocki, Meta’s vice-president of AI research, and Dawn Song. These are the people building the systems, asking governments for tools to slow the rate at which they are built.

Both major labs responded rather than distanced themselves. OpenAI posted that “at some point in the future, AI acceleration for frontier model development may be so high that the world will need to pace the rate of AI advancement”. Anthropic pointed to its own research on recursive self-improvement as evidence that pacing tools are needed so society can prepare.

The statement lands on ground already prepared. In June, Anthropic called on major labs to agree a coordinated plan to halt development if risks rise, warning that systems could soon improve themselves faster than the risks can be managed. On Monday, Nvidia formed a coalition with Adobe, CrowdStrike and others to develop AI safety and cybersecurity tooling, prompted by the Hugging Face breach and the questions it raised about autonomous agents.

Looking Forward

The request is aimed at Washington, but the machinery it describes — technical evaluation tied to governance mechanisms — is closest to what the UK’s AI Security Institute already does. The gap is authority rather than capability: as the Ada Lovelace Institute noted this week, AISI can assess and advise but cannot bar a deployment, and its access to models depends on the goodwill of the firms it evaluates. An international pacing effort would need participants with statutory footing, which is a live question for the Burnham government rather than a settled one. Worth watching whether British ministers treat this as an invitation.