Piloting Group Chats in ChatGPT (openai.com)

OpenAI is piloting group chats in ChatGPT across Japan, New Zealand, South Korea and Taiwan for Free, Go, Plus and Pro users — a new shared conversation space where people can invite 1–20 participants and collaborate alongside ChatGPT. The feature preserves private conversations (adding someone copies the chat into a new group), requires invite acceptance, supports profile names/photos, and includes controls for naming the group, muting, adding/removing members, and parental safeguards (reduced sensitive content if under‑18 is present). Use cases called out include trip planning, design collaboration, research and drafting, with search, image/file upload, image generation and dictation all enabled. Technically, group responses are powered by GPT‑5.1 Auto, which selects the best model available relative to the prompt and each participant’s plan; search and multimodal inputs are supported. ChatGPT has new “social” behaviors to decide when to reply or stay silent, can be @‑mentioned to force a response, react with emojis and reference profile photos for personalized outputs. Privacy and limits: personal ChatGPT memory is not shared or created from group chats, and rate limits apply only when ChatGPT responds (responses count against the responding user’s quota). For the AI/ML community this pilot tests multi‑user interaction patterns, dynamic model routing, moderation/guardrail strategies, and privacy tradeoffs for collaborative AI — insights that will shape larger rollouts and research into social-agent behavior.