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[AINews] OpenAI DevDay 2026: Dots, 6.1 Sol, Ultrafast, Decisions API, Agents API, Spaces, Marketplace, and 1.2 Billion ChatGPT WAU

OpenAI DevDay 2026 introduces major platform updates alongside staggering growth figures. The event showcases new APIs like Decisions and Agents, new developer environments including Spaces and Marketplace, and highlights a milestone of 1.2 billion weekly active users on ChatGPT. These releases give AI developers powerful new primitives for building complex agentic workflows and deploying production-grade applications directly into the OpenAI ecosystem.

Latent Space·Sep 30, 2026

Opening Kapyn…