Overview
- The pilot is live in Japan, New Zealand, South Korea and Taiwan, with broader availability not yet announced.
- Users can invite others via a shareable link to create conversations with one to twenty participants.
- ChatGPT runs on GPT-5.1 Auto in these rooms, with model access and rate limits determined by the member it is replying to.
- Personal memory is not used in group chats and no new memories are created from these conversations, preserving separation from private chats.
- The feature adds social behaviors such as deciding when to respond, emoji reactions, profile-based personalized images, and creates a copied thread when new participants are added.