Once a chat is inside a project, it will take on that project’s custom instructions and can reference any files you’ve ...

Confused by ChatGPT’s models? Here’s a detailed, user-tested guide comparing GPT-4o, GPT-4.1, GPT-4.5, and more — plus ...

ChatGPT o3, which has been available via API, is now 80% cheaper for developers, and there's no visible impact on performance ...

ChatGPT is now one of the world's most visited websites. Millions of people use the service daily, and OpenAI will now store ...

ChatGPT Pro is 10 times the price of ChatGPT Plus. Is either plan worth the money, or should you stick with free? Here's how to decide.

As of 6:32PM ET, OpenAI’s tracker reported a “full recovery in the API,” and that “Nearly all ChatGPT components are now ...

OpenAI's new o3-pro model replaces o1-pro in ChatGPT with better reasoning, tool support, and higher accuracy.

OpenAI is now fighting a court order to preserve all ChatGPT user logs—including deleted chats and sensitive chats logged through its API business offering—after news organizations suing over ...