At DevDay 2026 OpenAI announced more than 20 major updates spanning ChatGPT, Codex, its models and new ways of working with AI. The company framed these changes as tools to enable people to tackle more ambitious work and to build new experiences.
Key announcements
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ChatGPT modes: the platform now supports multiple operational modes designed to suit different workflows and use cases, allowing for more tailored and goal-oriented interactions.
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Agents: OpenAI introduced agents capable of taking on ongoing responsibilities. These agents can work over extended periods alongside humans to manage and carry out tasks.
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Open ecosystem and shared surface: ChatGPT is being positioned as a shared surface where humans and agents collaborate. Developers can also launch native experiences directly on this platform.
Why it matters
OpenAI presents these developments as steps toward a broader vision in which AI helps spark a new renaissance of creativity and discovery. By automating routine or persistent responsibilities and enabling closer human–AI collaboration, the company says AI should free people to focus on what matters to them, expand the freedom to pursue ideas, and enable outcomes previously thought impossible.
Reach and impact
According to the announcement, developers will be able to publish native experiences on ChatGPT’s shared surface, which OpenAI says reaches 1.2 billion weekly users collectively. The scale of the rollout and the more than 20 headline updates indicate OpenAI’s push to expand both the developer toolkit and user collaboration patterns.
Summary
The DevDay 2026 announcements aim to change how people and AI work together by introducing configurable ChatGPT modes, agents that assume continuous duties, and a more open platform for developers to build and deploy native experiences to a large user base.
