OpenAI shows developers how to build plugins for ChatGPT and Codex at DevDay 2026
Overview
OpenAI says developers can bring their tools, knowledge and interfaces into ChatGPT and Codex through plugin extensions.
A DevDay 2026 session uses live demos to show how to turn an idea into a working experience, share it, and reach new users.
A separate DevDay 2026 session, also posted by OpenAI on YouTube, covers building with the Codex harness through the Agents API. It describes running agents in a customer's environment, keeping long-running tasks going, and which infrastructure OpenAI manages.
Written by AI from the articles below · updated Nov 10, 10:09 PM ET
Check the sources:
Developments
2 developments
- Nov 10, 8:24 PM ET · 1 articleOpenAI shows how to build plugins for ChatGPT and Codex at DevDay 2026OpenAI · YouTube: OpenAI shows how to build plugins for ChatGPT and Codex at DevDay 2026
- Nov 10, 8:24 PM ET · 1 articleOpenAI explains building with the Codex harness through the Agents APIOpenAI · YouTube: OpenAI explains building with the Codex harness through the Agents API
Article timeline
The articles in this story. Times are ET.
- OpenAI · YouTubeOfficialOpenAI shows how to build plugins for ChatGPT and Codex at DevDay 2026
AIOpenAI says developers can bring their tools, knowledge, and interfaces into ChatGPT and Codex through plugin extensions. The DevDay 2026 session uses live demos to show how to turn an idea into a useful experience, share it, and reach new users.
- OpenAI · YouTubeOfficialOpenAI explains building with the Codex harness through the Agents API
AIOpenAI presents a DevDay 2026 session on building with the Codex harness through the Agents API. The session covers running agents in a customer's environment, keeping long-running tasks going, and which infrastructure OpenAI manages.
Heat Trend
- Current comparable heat
- 8
- Peak comparable heat
- 9Nov 10, 11:00 PM ET
- Change in past 24 hours
- –
The trend compares only continuously observed participants, so its scope may be smaller than the current heat total. Hover or tap for hourly heat; use arrow keys with a keyboard.