← ChatGPT & Codex changelog

ChatGPT — September 3, 2026

The introduction of GPT-6 Astra delivers significant advancements in coding, research, computer use, and complex multi-step work, with initial limited availability and enhanced safety monitoring. New Zendesk and OneNote plugins are now available in ChatGPT and Codex, streamlining support ticket management and note organization. Additionally, eligible Site owners gain external sharing capabilities, allowing secure viewing of live Sites by named individuals outside their workspace.

Added

  • Introducing GPT-6 Astra

Changed

  • Today we’re introducing GPT-6 Astra, with improvements in coding, research, computer use, and complex, multi-step work. Astra can create documents, spreadsheets, and presentations that follow your templates and instructions, and adapt when you add requirements or change direction.
  • Access is rolling out to a limited set of organizations. Astra is not yet generally available. Broader availability is planned over the coming days.
  • Astra includes additional safety monitoring to look for cases where agents may not have interpreted your instructions correctly. If a potential case is detected, the conversation may be paused or stopped as a precaution for you to review and decide how to proceed.
  • Zendesk & OneNote Plugins in ChatGPT and Codex [Beta]
  • Today, we added the Zendesk and OneNote plugins in the Plugin directory. The Zendesk plugin helps teams review support tickets and customer history, find relevant knowledge, and prepare replies in ChatGPT and Codex. Members connect their own Zendesk accounts to work with the support information they can access.
  • The OneNote plugin helps you find and summarize notes, gather decisions and action items, and create or update notes through supported actions in ChatGPT and Codex.
  • Read more: Zendesk Plugin, OneNote Plugin.
  • Share Sites with people outside your workspace
  • Eligible Site owners can now share a live ChatGPT Site with named people outside their workspace, without making the Site public. External viewers can use the shared Site but cannot edit or publish it. To share, open the Site, select Share, enter the recipient’s email, and save their viewer access. The recipient signs in with the account that was granted access. You can review or remove viewers in the Site’s sharing controls. Learn more in Creating and managing ChatGPT Sites.