Overview
- The feature is live on web and mobile for Free, Go, Plus, and Pro users in the four pilot markets.
- Each thread can include up to 20 participants and runs on GPT-5.1 Auto, which adapts responses based on the subscriber tier it is addressing.
- Image generation, file and image uploads, voice input, and web search continue to work inside shared conversations.
- Group privacy and controls include separation from personal ChatGPT memory, admin-managed membership, profile-based identity, and invite links that create a copied thread to preserve originals.
- Rate limits count only when ChatGPT responds, while user-to-user messages do not, and participants can use emoji reactions, mute or rename threads, and send private one-on-one messages within a group.