Over 1,300 AI researchers say the industry's race to build more powerful systems is putting humanity at risk
A letter signed by scientists and engineers at OpenAI, Anthropic and Google DeepMind pushes back hard against the idea that AI insiders aren't worried. They are.
Key points
- A letter signed by 1,367 AI researchers and engineers, mostly from OpenAI, Anthropic and Google DeepMind, warns that the current pace of AI development carries serious risks to humanity.
- The signatories work on frontier AI, meaning the most powerful and advanced AI systems being built today, making this one of the most direct insider warnings yet.
- The letter contradicts a common claim that only outsiders and critics worry about AI catastrophe.
- No specific demand or policy proposal was attached to the letter, but its existence signals growing unease inside the labs themselves.
For years, a reassuring line has circulated in tech circles: the people actually building AI aren't scared, so you shouldn't be either. Anyone raising alarms, the argument goes, is either naive or doesn't understand the technology.
A newly published open letter blows a large hole in that argument.
Who signed it, and why does that matter?
The letter carries 1,367 signatures from researchers and engineers working at frontier AI labs, the handful of organisations racing to build the world's most powerful AI systems. The bulk of the signatories come from three names you will recognise: OpenAI, Anthropic and Google DeepMind.
These are not outside critics. They write the code, train the models and run the experiments. Their professional lives are spent making AI more capable. And they are worried.
The Guardian first reported on the letter and its implications in a piece by AI researcher Stuart Russell.
What are they actually concerned about?
The letter points to catastrophic risk, the possibility that advanced AI systems could cause large-scale, hard-to-reverse harm. The signatories describe the current moment as dangerous.
This is a direct challenge to a pattern that has become common in public debate. Critics of AI safety concerns are often dismissed as "doomers" or "Luddites" pushing a "fringe" view rooted in science fiction. The letter's authors are saying, plainly: that characterisation is wrong.
The fact that so many insiders are willing to put their names to a public statement is itself significant. Researchers at big AI labs rarely speak out in ways that might embarrass their employers.
What does this mean for ordinary people?
It means the conversation about AI risk is not fringe. When more than a thousand of the people building the technology say they are worried, that is worth paying attention to.
It does not mean AI will definitely cause catastrophe. It does mean the people with the best view of what is happening inside these systems think the risks are real and serious enough to say so publicly.
No specific action is required from the public right now. But if you have been told not to worry because "the experts" aren't worried, this letter is evidence that picture was never accurate.
What happens next?
The letter does not include a list of demands or a proposed policy fix, which limits its immediate impact. It functions more as a signal, a crack in the public face of confidence that the big labs have generally presented.
Pressure for government oversight of AI development has been building in the United States, the United Kingdom and the European Union. Letters like this one tend to add weight to those calls, even without spelling out exactly what regulators should do.
