Release date: 2026-09-29. This update is based on the vendor’s announcement and was added to the Worksflow.ai guide on October 11, 2026.
OpenAI’s September 29, 2026 DevDay recap groups more than 20 announcements across ChatGPT, Codex, its models, and developer tools. The company describes new ways to work with agents, changes to Codex and APIs, and expanded options for building experiences that connect to ChatGPT.
What the update means
The recap is a launch overview, not proof that every feature is generally available to every account. For adoption planning, check each linked product’s availability, rollout region, account requirements, and API documentation before promising a feature to customers.
What to verify before you update a workflow
- Confirm the exact model or product identifier in the vendor’s live documentation.
- Check whether the announcement describes a general release, preview, or restricted rollout.
- Test the same representative tasks, tool calls, and failure cases used in your current workflow.
- Record the vendor’s source and the date your team checked it.
Official sources
Details and availability can change after publication. Recheck the source before acting on this guide.