Major stock indexes finished sharply higher Wednesday, with the S&P 500 and Nasdaq Composite setting their latest closing ...

OpenAI's GPT-5.5 boosts agentic coding, reduces costs, and handles complex tasks with minimal input across business and ...

OpenAI says it has already put GPT-5.5’s coding skills to use internally. The LLM helped optimize the software that manages ...

OpenAI announced GPT-5.5, its latest AI model that is better at coding, using computers and pursuing deeper research ...

OpenAI's newest model matches GPT-5.4's speed while outperforming it on nearly every benchmark. It's rolling out to paid ChatGPT users today.