DevDay 2026 Recap
OpenAI, Tuesday, September 29th, 2026
OpenAI's DevDay 2026 brought 20+ announcements, including GPT-6.1 Sol, Astra Ultrafast, always-on dots agents and ChatGPT as a developer surface.
OpenAI summarized more than 20 announcements from DevDay 2026 across ChatGPT, Codex and its models.
Highlights include GPT-6.1 Sol, the faster GPT-6 Astra Ultrafast mode in ChatGPT, Codex and the API, and new project-level data controls such as Zero Data Retention with private safety processing.
The company introduced dots, always-on agents that take on ongoing responsibilities, and opened ChatGPT as a shared surface where developers can launch native experiences to its 1.2 billion weekly users.