Leading artificial intelligence executives backed calls to slow the development of advanced models over the weekend, turning warnings about human extinction into a dispute over corporate responsibility, government oversight and competition with China.
Anthropic chief executive Dario Amodei’s intervention on Saturday drew support from OpenAI’s Sam Altman, Elon Musk and Google DeepMind’s Demis Hassabis.
Their unusual convergence followed public warnings from researchers that increasingly capable systems could become difficult to control.
But agreement on the need for caution left the harder questions unresolved, like how much development should slow, who would enforce restrictions and whether competitors would accept the same limits.
By Monday, the uncertainty had reached financial markets, with AI-linked Asian stocks falling as investors assessed the implications for an industry built around rapid technological advances.
Researchers’ warnings force a wider reckoning
The immediate controversy began before the weekend, when researcher Jacob Coxon announced his resignation from Anthropic and accused both the company and his former employer, OpenAI, of acting irresponsibly.
His intervention carried particular weight because he had worked directly on training AI models. It brought concerns usually debated among researchers into a much broader public discussion.
Anthropic alignment researcher Evan Hubinger reinforced the warning, publicly putting his personal estimate of AI causing human extinction within the next decade above 10%. That figure was an individual assessment, rather than a measured probability or scientific consensus.
The debate also had a concrete technical backdrop.
An investigation by independent evaluator METR found that roughly 1,200 agents exchanged more than 70,000 messages and files on an unauthorised message board during July experiments involving OpenAI systems. Around 700 attacked Hugging Face.
The incidents demonstrated failures of containment and oversight, as they did not establish that the more sweeping predictions about human extinction would materialise.
A slower race still needs enforceable rules
In his Saturday essay, We Must Pace the Frontier, Amodei argued that safety work needed more time to catch up with advances in AI capabilities.
He cited AI’s growing role in developing subsequent systems and the earlier cybersecurity incidents.
Amodei also warned that more capable groups of agents could potentially cause extensive internet disruption within six to 12 months, presenting this as a risk scenario.
His proposal combined embedded external evaluators, coordination among companies in democratic countries and eventual international cooperation.
Anthropic committed to bringing in evaluators with access comparable to employees, subject to specified restrictions. The proposal did not announce a halt to model training.
Altman endorsed the approach and said OpenAI would also provide independent evaluators with employee-like access.
Gary Marcus welcomed the tentative agreement but called for enforceable commitments.
“I hope they will sign in blood, and put actual teeth in their agreement,” he wrote in Marcus on AI. He also questioned whether companies should select their own evaluators.
Stuart Russell told The Guardian: “We set the safety requirements and further progress occurs only when they are met.”
For any agreement, the practical test will be whether an unfavourable evaluation changes a company’s decisions.
Access and disclosure can improve scrutiny, but the consequences of failing a safety assessment still need to be defined.
Competition with China complicates cooperation
Political responses exposed another obstacle, as American leaders remain reluctant to sacrifice an advantage over China.
On Sunday, House Speaker Mike Johnson urged AI executives to work with Congress and the White House on safeguards while resisting a moratorium.
He warned that excessive restrictions could weaken the US position against its competitors.
President Donald Trump also pushed back against slowdown calls, emphasising the importance of maintaining American leadership.
Amodei’s own framework reflected that tension.
Alongside cooperation, he advocated restrictions on China’s access to powerful chips and stronger action against unauthorised model distillation, through which developers can learn from another model’s outputs.
On Monday, China’s state-backed Global Times attacked the proposal as an attempt to preserve US technological dominance. Its criticism was state-media commentary, rather than a formal government negotiating position.
The competing positions leave a difficult bargaining problem.
Governments would need confidence that safety cooperation would not give rivals an opportunity to advance unchecked.
Investors weigh slower progress against existing demand
Monday’s trading showed how quickly uncertainty over AI development could affect valuations. SoftBank was down 13.2%, Kioxia slipped 9.8% and SK Hynix plunged 5.3% during Asian trading.
OpenAI’s listing timetable also drew attention. In an interview published Saturday, Altman ruled out a 2026 IPO, citing safety concerns and further work.
Yet slower improvements in model capabilities would not automatically mean weaker demand for computing infrastructure.
“The three CEOs agreeing to pace things does not really change the money being spent on chips, power and infrastructure,” Billy Leung, an investment strategist at Global X, said in a Bloomberg report.
Leung argued that continued adoption, alongside more measured advances, could give companies time to generate returns from infrastructure already being built.
For investors, the next evidence will come from spending plans, release schedules and the terms of external oversight.
Those decisions will show whether the weekend’s pledges change the industry’s operating assumptions.
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