After what was apparently a successful testing period, OpenAI has announced that it is rolling out group chats in ChatGPT to "all logged-in users on ChatGPT Free, Go, Plus and Pro plans globally over the coming days." The company first started testing a way to collaborate with peers directly inside ChatGPT around a week ago in Japan, New Zealand, South Korea and Taiwan.Once you start a chat in ChatGPT you can invite other people to join (up to 20 in a chat), either with their existing ChatGPT account, or one they make after clicking the invite link. Beyond being able to prompt ChatGPT together and react to each other's messages, the features of group chats appear to be deliberately limited. OpenAI says that the content of group chats aren't stored in ChatGPT's memory, and any person can be removed from a chat by any person, save for the creator.