OpenAI’s popular AI chatbot ChatGPT was facing significant disruptions as of Tuesday morning — leaving hundreds of millions of users in limbo.

Perplexity AI, led by Aravind Srinivas, has surpassed ChatGPT to become the top free app on Apple's App Store, fueled by a ...

But ChatGPT Free users only gained access to chat history references on Tuesday. As is often the case with new ChatGPT features, OpenAI (and Sam Altman) announced the new memory feature on X .

For ChatGPT users, many of the improvements in instruction following, coding, and intelligence available in GPT‑4.1 have been gradually incorporated into the latest version⁠ of GPT‑4o.