OpenAI CEO Sam Altman today said that the company will allow Plus users to continue to use the prior-generation GPT-4o model if they don't want to use the new GPT-5 model that came out yesterday.

GPT-5 faced criticism for being curt and less personable, but OpenAI has improved its performance, personality, and limits. GPT-5 now has a few new modes for ChatGPT Plus: Auto, Fast, Thinking Mini, ...

When Sophie Duchesne, a PhD candidate at the University of Saskatchewan, heard the news on Thursday that OpenAI was shutting down GPT-4o, the AI model that had underpinned ChatGPT, she was “shocked.” ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. OpenAI is bringing back GPT-4o less than 24 hours after replacing it with GPT-5. CEO Sam Altman and ...

When OpenAI unveiled GPT-5 in August 2025, it promised to be faster, sharper, and more reliable than its predecessor, so naturally, GPT-5 became the new default model for ChatGPT. Those who are using ...

OpenAI unveiled the GPT-5 models less than a week ago, but the launch of the long-awaited ChatGPT upgrade hasn't been as smooth as the AI company might have hoped. GPT-5 was met with plenty of ...

On October 6, 2025, OpenAI hosted DevDay 2025, where the company introduced new tooling for agents, AgentKit, and shipped fresh model options, GPT-5 Pro and Sora 2 in the API. The day was themed with ...

Forbes contributors publish independent expert analyses and insights. Dr. Lance B. Eliot is a world-renowned AI scientist and consultant. A new form of AI safeguard consists of transferring a ...

OpenAI’s AI-powered chatbot platform ChatGPT keeps expanding with new features. The chatbot’s memory feature lets you save preferences so that chats are more tailored to you. ChatGPT also has an ...

OpenAI today upgraded GPT-5 to GPT-5.1, the next-generation version of the AI model that powers ChatGPT. There are two versions of GPT-5.1, including Instant and Thinking. Instant is warmer, more ...