Checked fact 115711 Oct 2026Models and releases

OpenAI's guide says Ultrafast mode is the fastest service tier in the OpenAI API, broadly available for GPT-6 Astra and GPT-6.1 Sol, to use when speed justifies the higher cost.

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The exact words it rests on

Ultrafast mode is the fastest service tier in the OpenAI API. It is broadly available for GPT-6 Astra and GPT-6.1 Sol. Use it when speed justifies the higher cost.

What the source said when we opened it, on 11 Oct 2026.

The source

Ultrafast mode | OpenAI API
OpenAI

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Checked by the notis newsroom on 11 Oct 2026, against the source above.

In the story

OpenAI added Ultrafast mode for GPT-6.1 Sol, priced at $12 per million input tokens. 11 Oct 2026

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“OpenAI's guide says Ultrafast mode is the fastest service tier in the OpenAI API, broadly available for GPT-6 Astra and GPT-6.1 Sol, to use when speed justifies the higher cost.” ai notis, checked 11 Oct 2026. Source: Ultrafast mode | OpenAI API (OpenAI). https://ainotis.com/c/1157

As a reference (APA style)

ai notis. (2026, October 11). OpenAI's guide says Ultrafast mode is the fastest service tier in the OpenAI API, broadly available for GPT-6 Astra and GPT-6.1 Sol, to use when speed justifies the higher cost [Checked claim 1157]. ai notis. https://ainotis.com/c/1157

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