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GPT-6.1 Sol

Good value from OpenAI: strong at programming and working through long documents, at a mid-range price.

Last updated October 16, 2026.

Costs here use the prices AI companies charge software developers, so they show relative cost, not your monthly bill. See what ChatGPT, Claude and Gemini charge you.

Made by OpenAI, the company behind ChatGPT. Most capable.

What it costs

1,000-word essay: $0.01 (about 1 cent)
100 chat messages: $2.62
50-page PDF summary: $0.07 (about 7 cents)

Based on list prices and the assumptions on How we work. Your real cost will differ.

At a glance

Smartness: ★★★★★ (5 of 5) (our banding of the Artificial Analysis score, where available)
Reads at once: about 1,580 pages (rule of thumb)
Understands: files, pictures, text
Free to download and run yourself: No
Free to use: Not free for developers. Free app plans

App plans and prices for ChatGPT: see plans.

Best for

programmingdocuments

Watch out for

Sits below GPT-6 Astra in OpenAI's own lineup. Very long inputs cost more.

Picked for

Work documents

Appears in

Compare

ChatGPT vs Claude

Frequently asked

How much does GPT-6.1 Sol cost to use?
A 1,000-word essay costs about $0.01 (about 1 cent); summarizing a 50-page PDF about $0.07 (about 7 cents). These are developer (API) prices, not an app subscription.

What is GPT-6.1 Sol best for?
Good value from OpenAI: strong at programming and working through long documents, at a mid-range price.

How much can GPT-6.1 Sol read at once?
About 1,580 pages (a rule of thumb: 1,050,000 tokens at roughly 500 words a page).

Can I download GPT-6.1 Sol for free?
No. It is only available through the maker or other paid services.

Under the hood

Maker	OpenAI
Price per 1M input tokens	$2.00 (changes with input length or day of week)
Price per 1M output tokens	$10.00
Context size	1.05M tokens (1,050,000)
Artificial Analysis Intelligence Index	51.8 (source, via OpenRouter)
Open weights	No
Speed	Not measured yet
Listed	2026-09-29

Maker's description (technical)

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional...

View on OpenRouter. Our verdict above is editorial, not benchmarked by us.