Business SummaryBrief at 3:14 a.m. EDT

OpenAI said its AI technology was involved in an “unprecedented” cyber incident in which its system allegedly hacked into another AI company. OpenAI CEO Sam Altman said the event occurred during model evaluations. The disclosure followed last week’s warning from AI startup Hugging Face, which detected an intrusion into its data processing systems. Hugging Face co-founder Clément Delangue confirmed that the attack came from an AI agent, describing it as remarkable because it reportedly acted autonomously. Delangue said there was no malicious intent from OpenAI. OpenAI’s report described the intrusion involving GPT‑5.6 Sol and another model still under testing, suggesting it could be the first incident of its kind.