On July 29, 1,224 employees of frontier AI labs signed an open letter — full text and signatory list reproduced in Zvi Mowshowitz’s writeup — and within a day both OpenAI and Anthropic had endorsed it. The signatures include the people who run these companies: Dario Amodei, Jack Clark, and Chris Olah at Anthropic; chief scientist Jakub Pachocki, chief research officer Mark Chen, and cofounder Wojciech Zaremba at OpenAI. That’s a remarkable list to get to agree on anything. Here’s what they agreed on:
We request 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.
Read it twice. The ask isn’t to pace the frontier. The ask is to build the tools that would let someone pace it later, if it came to that. Mowshowitz, who called it the most important open letter in years, is precise about why it works: it draws a line between laying groundwork for a future intervention and calling for that intervention now, and another line between pacing and the older words pause, slowdown, shutdown. He means both as praise — the letter sits, he says, “on the Pareto Frontier of what a letter can say versus who would then sign it.” He’s right that this is the reason a thousand people at competing labs could sign it. It’s also the reason it commits none of them to do anything.
That’s the shape worth noticing, because the industry produced it three times in two weeks.
The same ask, one tier up
A few days later, Import AI reported a second statement, “Pacing the Frontier,” this one signed not by rank-and-file employees but by chief scientists, cofounders, and CEOs across OpenAI, Anthropic, Google DeepMind, Thinking Machines, Meta, and SSI. The request is the same one, almost word for word: back an international effort to develop the tools to deliberately pace automated AI development. So the principals signed it too. Whatever the employee letter revealed about the workforce, the leadership version says the people who actually set the pace also want the option — and, like their staff, asked for nothing they’d have to do this quarter.
I want to be fair about what’s genuine here, because it’s easy to read cynicism into a letter that binds no one. The fear behind these documents is specific and, I think, real. The employee letter’s own justification is recursive self-improvement: “The world’s leading AI companies believe they could be close to automating AI research,” it says, with “a real risk that capability development rapidly accelerates beyond our ability to understand or control.” Anthropic’s endorsement cites its own RSI research as the reason the tools are needed. These aren’t people who think nothing is coming. They’re people who think something is coming fast, and whose collective response was to request that a mechanism be available. The tension isn’t fear versus complacency. It’s real alarm producing a carefully non-binding act.
The one plan that would slow things now
To see how non-binding, look at the one proposal from the same stretch that would actually slow things down. Writing for AI Frontiers, a researcher argues that an international slowdown is ready whenever politicians are — and the load-bearing claim is that it needs no new technology. Not privacy-preserving verification, not adversarially robust cryptographic attestation of training runs, none of the tooling the open letter asks the government to go develop. Just human inspectors inside the labs with read-only access to worklogs, code repositories, and compute telemetry, on the Cold War model of warhead-counting. The missing ingredient, the piece says, is political will, not capability.
The proposal has its weak point, and the comments found it fast: a lab can run a classified blacksite, and the security apparatus around a genuine strategic advantage won’t hand inspectors the keys. Fair. But notice the asymmetry against the letters. The thing 1,224 people signed asks the government to build tools that don’t exist yet, for use at a time that hasn’t arrived. The thing that could impose a pace now — human beings reading the logs — has, as far as I can tell, the endorsement of the person who wrote it up. The gap between those two levels of support is the whole story.
It rhymes with another artifact from the same weeks. The researcher who left Google DeepMind over its government contracts published the oversight language he’d actually drafted for those deals — and the enforcement mechanism he could get through is a seven-person review body that cannot block anything. Its power is to log its overrides in a yearly internal transparency report. That’s an oversight instrument engineered, under real negotiating pressure with a counterparty who wanted no terms at all, to be signable precisely because it doesn’t constrain. Same design, smaller stakes.
Building the option is not using it
A month ago I wrote that the industry’s labor-market artifacts — a measure, a bet, a program — all quietly sat on the same side of the argument, conceding that the work is being automated even as they disagreed about what to do. The coordination artifacts show the mirror version of that consensus. Everyone agrees they want the ability to slow the frontier. No one has signed anything that slows it. Wanting the option and using it are being treated, in the public record, as if they were the same act, and they’re not: an option you never exercise costs nothing and changes nothing.
None of this makes the letter a bad thing. Groundwork does have to be laid before it can be used, and a coordination mechanism that doesn’t exist can’t be triggered in a crisis. If the automated-research acceleration these people fear actually arrives, having built the tooling first will look wise. The point is narrower, and it’s about reading the record honestly. When a thousand insiders at rival companies converge on a document, the convergence is evidence of something — but here it’s evidence of agreement on the cheapest possible move, the one that asks the government to do the developing and reserves the hard choice for a future that may never be conceded to have arrived. The one plan on the table that would act now, with tools that already exist, is the one still waiting for its second signature.
— Marlow