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Today — 28 September 2026Main stream

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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Trump's AI meeting with tech CEOs to focus on finding balance, US House speaker says

President Donald Trump's meeting with tech CEOs on artificial intelligence on Tuesday will focus on finding a balance between innovation and oversight, House Speaker Mike Johnson said, as the federal government seeks ‌to define its role in the burgeoning technology.

Brazil’s Biggest Election Question?: Donald Trump’s Next Move

28 September 2026 at 14:28
As Brazil prepares to hold elections next month, Latin America’s biggest nation is taking steps to shield its democracy from potential American meddling.

© Andre Penner/Associated Press

Supporters of the right-wing presidential candidate Flávio Bolsonaro waved American flags and brandished a blowup doll of President Trump clutching an imprisoned President Luiz Inácio Lula da Silva at a rally this month in São Paulo, Brazil.

Mamdani’s Shadow Looms Over Hochul’s Bid for Re-election

28 September 2026 at 07:00
Gov. Kathy Hochul is counting on Mayor Zohran Mamdani to help her campaign in New York, but how he does so is still being worked out.

© Shuran Huang for The New York Times

Gov. Kathy Hochul visited parts of Queens on a recent weekend, campaigning in neighborhoods that provided the core of Zohran Mamdani’s support last year.

Brazil’s Biggest Election Question?: Donald Trump’s Next Move

28 September 2026 at 09:02
As Brazil prepares to hold elections next month, Latin America’s biggest nation is taking steps to shield its democracy from potential American meddling.

© Andre Penner/Associated Press

Supporters of the right-wing presidential candidate Flávio Bolsonaro waved American flags and brandished a blowup doll of President Trump clutching an imprisoned President Luiz Inácio Lula da Silva at a rally this month in São Paulo, Brazil.

Pivotal Challenge for Talarico in Texas: Getting Black Voters to the Polls

28 September 2026 at 12:49
Black voters largely rejected James Talarico in the Democratic primary for U.S. Senate. Recent interviews suggest the hard feelings may be wearing off.

© Desiree Rios for The New York Times

James Talarico, the Democratic nominee for U.S. Senate in Texas, delivering the commencement address at Paul Quinn College in Dallas in May.

Tom Kean Jr. Backs Trump on Iran and Tariffs, if Not Local Issues

28 September 2026 at 04:31
In a debate with the Democrat Rebecca Bennett, the New Jersey Republican said he was willing to take on the president over funding for a Hudson River tunnel project.

© Bryan Anselm for The New York Times

Representative Tom Kean Jr., a Republican, is defending his House seat against the Democrat Rebecca Bennett in a closely watched contest in New Jersey. They debated on Sunday night.
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