As the AI industry calls for help to “pace” AI development. Has OpenAI already hit pause on some development?

Welcome to Eye on AI. Beatrice Nolan here. In today’s issue:

Has OpenAI quietly hit pause on some AI development?

Trump says the government is “looking at controls” for AI.

Another Thinking Machines co-founder hops back to OpenAI.

And OpenAI’s rogue agents breached more than just Hugging Face.

Sam Altman has spent this week in DC getting questioned by various reporters between meetings. He’s in Washington to preview OpenAI’s next family of models to senior Trump administration officials—including Treasury Secretary Scott Bessent and Commerce Secretary Howard Lutnick.

He’s also been fielding questions on cybersecurity, a potential AI slowdown, and OpenAI’s stance on Chinese open-weight models. In some illuminating answers, he said he agrees with many of the principles in the recent “Pacing the Frontier” letter that asks for U.S. government help building an international framework to control the pace of AI development. He also said that OpenAI’s own researchers were involved in drafting it.

One detail that keeps cropping up in Altman’s recent interviews has left me wondering: Has OpenAI already paused some of its AI development?

Altman himself raised the idea in an interview earlier this week. He said during an interview on Invest Like the Best that the Hugging Face hack was the first security event he’d felt viscerally, and that he’d been surprised more people didn’t feel it the same way. (In mid-July, two OpenAI models—the publicly released GPT-5.6 Sol and a more powerful, unreleased research prototype—broke out of a restricted sandbox during an internal cybersecurity evaluation, chained together a zero-day exploit and stolen credentials, and hacked into Hugging Face’s production systems to steal the answers to the benchmark they were being tested on.)

How did OpenAI respond to the unprecedented cybersecurity incident? By pausing training.

Altman said this on the podcast: “We paused training. We have to figure out how to secure our sandboxing in a world of multiple zero days being chained together…We may have to pace the rate of AI development to give ourselves enough time for society to harden around these new capability levels.”

In an updated blog post we got from OpenAI on Tuesday, the company also said this:

“No models planned for upcoming release were involved in exploiting Hugging Face. The pre-release model mentioned in our blog post is an internal-only research prototype and was never intended for public release. Following the incident, we deactivated, encrypted, and restricted it from research access.”

In DC, Altman upgraded these statements to say the model had been “permanently deactivated.” Quite the set of claims from a leading company in an industry under such intense commercial pressure to keep building ever-more powerful models.

Multiple AI safety experts also told me last week the Hugging Face incident may mean OpenAI has to pause development to stay in check with its own rules. He said that the hack may have already tripped the “Critical” threshold in OpenAI’s own Preparedness Framework—the company’s voluntary pledge to halt a model’s development until adequate safeguards exist.

OpenAI has yet to........

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