Checked fact 292827 Oct 2026Models and releases

OpenAI says that at max effort GPT-6.1 Terra is over three times as token efficient as Claude Opus 5.5 and one-fourth its price per token, resulting in a roughly 9x lower cost per task.

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The exact words it rests on

At max effort, Terra is over three times as token efficient as Claude Opus 5.5, and one-fourth its price per token, resulting in a ~9x lower cost per task.

What the source said when we opened it, on 27 Oct 2026.

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Introducing GPT-6.1 Terra
OpenAI · 2026-10-26

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Checked by the notis newsroom on 27 Oct 2026, against the source above.

In the story

OpenAI says GPT-6.1 Terra meets Critical cybersecurity threshold, at half GPT-5.6 Terra's price 27 Oct 2026

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“OpenAI says that at max effort GPT-6.1 Terra is over three times as token efficient as Claude Opus 5.5 and one-fourth its price per token, resulting in a roughly 9x lower cost per task.” ai notis, checked 27 Oct 2026. Source: Introducing GPT-6.1 Terra (OpenAI). https://ainotis.com/c/2928

As a reference (APA style)

ai notis. (2026, October 27). OpenAI says that at max effort GPT-6.1 Terra is over three times as token efficient as Claude Opus 5.5 and one-fourth its price per token, resulting in a roughly 9x lower cost per task [Checked claim 2928]. ai notis. https://ainotis.com/c/2928

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