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OpenAI · Release notesSource update

Substantive changesRecordedObservation date 2026-09-30(day precision)Revision r2

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Summary

The changelog adds the GPT-6 Astra Ultrafast mode (enabled via the service_tier parameter) and the computer use functionality for Agents API, while also removing old entries related to ChatGPT Work, indicating a shift in focus from enterprise workspaces to Agent capabilities.

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Source page

https://platform.openai.com/docs/changelog ↗

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