OpenAI researchers said the new model was the company’s “best chat model yet,” citing an improved knowledge base and better contextual understanding.

But it could be the last release in OpenAI's classic LLM lineup.

A new study compared four search engines and seven AI chatbots, including ChatGPT and GPT-4, to answer 150 health-related ...

ChatGPT is getting even smarter. OpenAI has unveiled its latest model, GPT-4.5. The new model is already available to ChatGPT Pro users and developers.

OpenAI CEO Sam Altman has announced that GPT-4.5 will "likely" begin rolling out to ChatGPT Plus subscribers "over a few days ...

Internally called Orion, GPT-4.5 is OpenAI’s largest model to date, and it’s first available through the company’s $200 ...

OpenAI has begun rolling out its newest and largest AI model, GPT-4.5, to users on the company's ChatGPT Plus tier.

Later this year, OpenAI expects to introduce GPT-5 as a single that handles quick chat requests and more intensive reasoning requests without switching models. For now, GPT-4.5 is here to replace ...