OpenAI Blog
OpenAI added group chat functionality to ChatGPT, allowing multiple users to collaborate in a single conversation thread. Users can invite others to join existing chats and work together with ChatGPT in real time. This enables shared brainstorming, document editing, and collaborative problem-solving without needing separate individual conversations.
Collaborate with others, and ChatGPT, in the same conversation.
The daily briefing
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TLDRocket
21 July 2026
The open-weight AI model market hit an inflection point today as Alibaba and Kimi released trillion-parameter competitors that challenge the closed-model orthodoxy—just as Washington moved to restrict them. Alibaba's Qwen 3.8 Max (2.4 trillion parameters) and Kimi K3 (2.8T) are going open-weight, with K3 ranking first on Frontend Web App Arena and fourth on agentic benchmarks, signaling that scale and transparency can coexist. The timing matters: while U.S. policymakers weigh layered restrictions on Chinese open models, technical experts are pushing back hard, arguing that closed gardens actually hurt security and competition more than they help. The real fragmentation risk isn't technical—it's regulatory.
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