The 2026 DevDay developer conference is scheduled for 10:00 AM Pacific Time on September 29th, which corresponds to 1:00 AM Beijing Time on September 30th. OpenAI released a "Getready" countdown ahead of the conference. The official announcement confirmed that the conference will showcase the next steps in ChatGPT, Codex, and developer tools, but specific products were not revealed. However, market discussion has quickly focused on AIAgents, especially agent systems capable of calling tools, collaborating across applications, and continuously executing multi-step tasks. OpenAI's previously launched ChatGPTWork has combined chat models with Codex for generating documents, presentations, and websites. Industry competition is shifting from model benchmark scores to task completion rates, operating costs, and workflow reliability.