OpenAI

GPT-6.1 Sol adds a faster mode. Access still depends on the product.

The API and ChatGPT-plan announcements describe different eligibility rules.

Source published 2026-10-08Documentation briefingGeneral infoAI-assisted editorial

Sources checked 2026-10-13. Access and availability can change.

What changed

OpenAI’s October 8 API changelog adds Ultrafast processing for GPT-6.1 Sol in the Responses API, subject to rate limits. Its separate ChatGPT and Codex changelog describes Ultrafast access in Codex and ChatGPT Work for eligible plans and workspaces.

Why the distinction matters

An API feature announcement is not a promise that the same control appears in every chat app. Check the product you actually use, its plan rules, and the processing price before selecting a faster option. Faster output also does not remove the need to check the answer.

Our coverage boundary

We verified the two official changelogs and have not measured the speed difference. This is a processing-mode update, not a claim that a new Sol model launched on October 8. Current provider documentation remains the place to confirm access and charges.

Sources & further reading

Open the source to check the original wording and current availability.

This is a source-linked briefing, not a hands-on product review. Provider claims and outside evaluations are identified in the text.