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

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

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

Uncover the truth about GPT-4.5's performance, limitations, and its future in AI development. See how it fares against Claude ...

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

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.

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 ...