OpenAI

GPT-4.5 achieves 62.5% accuracy on SimpleQA evaluation and reduces hallucination rates to 37.1%, compared to GPT-4o's 61.8% hallucination rate.

Beyond content licencing, The Guardian adopts ChatGPT Enterprise across operations to develop new AI-powered products for readers while maintaining attribution and IP rights.

The partnership enables Schibsted to reach ChatGPT's 300 million users while allowing the AI platform to deliver more relevant Nordic news with attribution.

Deep research autonomously discovers, reasons about, and consolidates insights from hundreds of online sources, creating comprehensive analyst-level reports that transform hours of work into minutes.

OpenAI will deploy o1 model on Venado supercomputer at LANL, creating shared resources for researchers across national labs to accelerate scientific breakthroughs and enhance security capabilities.

Four-hour outage affected 300M weekly users. Started 11:00 GMT with 'bad gateway error,' fixed 15:09 GMT. 10,000+ UK reports on Downdetector.