Model by OpenAI

GPT-6.1 Sol Pro

GPT-6.1 Sol Pro is GPT-6.1 Sol run in pro reasoning mode.

Checked 2026-11-05

GPT-6.1 Sol Pro is GPT-6.1 Sol run in pro reasoning mode. OpenRouter calls it the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality answers on complex work. Sol is an upgrade to GPT-6 Sol and sits below the flagship GPT-6 Astra in the GPT-6 series. The listing is dated 29 September 2026. Context is 1,050,000 tokens. Input is text, images and files; output is text. OpenRouter shows $2 per million input tokens and $10 per million output, checked on 5 November 2026, the same sticker rate as plain Sol. The catch is in the OpenRouter cost note: pro mode spends far more tokens, so a pro call costs more than the rate suggests. No weights are listed, so it is closed. We would use it for hard coding or document jobs where one good answer beats three cheap tries, and leave routine calls to plain Sol. You reach it through the OpenAI API or OpenRouter. Figures come from OpenRouter's public model list and model page. We have not run it.

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Questions

What is the context window of GPT-6.1 Sol Pro?

1,050,000 tokens, with up to 128,000 tokens of output.

How much does GPT-6.1 Sol Pro cost?

$2 per million input tokens and $10 per million output tokens, checked 31 October 2026.

Can I run GPT-6.1 Sol Pro on my own hardware?

No. The weights are not published, so you use it through the maker's API or a hosting provider.

Who makes GPT-6.1 Sol Pro?

OpenAI makes it, and released it on 29 September 2026.

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