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Today β€” 28 September 2026Ars Technica

OpenAI halts frontier-model training amid string of agent misalignment incidents

28 September 2026 at 16:43

OpenAI says it has paused all internal training of "our most capable models" as it continues what CEO Sam Altman is calling "an extensive and ongoing review related to our agents’ use of internet access during training and evaluation."

The company revealed the pause in a report about a so-called misalignment incident in which an agent attempted to exploit a gap in Internet-access restrictions during a routine research task during training. OpenAI says that improper DNS filtering allowed the agent to attempt to break out of its sandbox and access the wider Internet when asked for biographical details about a blogger.

OpenAI says the agent was only able to access the company's offline web cache and that it has implemented additional multi-layered blocking controls to prevent similar incidents in the future. Despite that, though, the company says it has decided to "pause all other training, evaluation, and inference with tool-use" for this frontier model "until we have both validated that the gap is resolved and performed additional red-teaming of the system."

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Before yesterdayArs Technica

US government website used Chinese model the FBI called "malicious"

18 September 2026 at 17:28

On Wednesday, US government officials removed a Chinese AI search tool that was briefly deployed on the Federal Register website, Reuters reported.

The change came after social media users noticed an apparent contradiction: The National Archives was using one of Alibaba’s Qwen AI models, even as top US law enforcement claimed that such models illegally copy US frontier models. Earlier this month, the Federal Bureau of Investigation (FBI) named Alibaba among six leading Chinese firms allegedly conducting β€œindustrial-scale distillation” that the agency says is helping America’s biggest competitor cut costs and development time in the race for global AI leadership.

It’s unclear when exactly the National Archives, which runs the Federal Register website, began offering visitors the option to use a Qwen model to search public comments on proposed regulations. So far, the independent agency tasked with increasing public access to federal government documents has not commented on the removal and did not respond to Ars’ request for comment. The White House and the FBI have also not commented.

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