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.
On Thursday, Anthropic’s chief rival, OpenAI, took a different approach. The company unveiled a new flagship A.I. model, ...
OpenAI announced GPT-5.5, its latest AI model that is better at coding, using computers and pursuing deeper research ...
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