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GPT-6.1 Terra

OpenAI's faster, lower-priced model for computer tasks and writing. The standard price is half of GPT-6.1 Sol.

Last updated November 12, 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. Everyday and cheap.

What it costs

1,000-word essay: $0.01 (about 1 cent)
100 chat messages: $1.31
50-page PDF summary: $0.04 (about 4 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

computer taskswritinghigh-volume work

Watch out for

OpenAI says the hardest coding jobs still fit GPT-6.1 Sol or GPT-6 Astra better. Very long inputs cost more.

Frequently asked

How much does GPT-6.1 Terra cost to use?
A 1,000-word essay costs about $0.01 (about 1 cent); summarizing a 50-page PDF about $0.04 (about 4 cents). These are developer (API) prices, not an app subscription.

What is GPT-6.1 Terra best for?
OpenAI's faster, lower-priced model for computer tasks and writing. The standard price is half of GPT-6.1 Sol.

How much can GPT-6.1 Terra 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 Terra for free?
No. It is only available through the maker or other paid services.

Under the hood

Maker	OpenAI
Price per 1M input tokens	$1.00 (changes with input length or day of week)
Price per 1M output tokens	$5.00
Context size	1.05M tokens (1,050,000)
Artificial Analysis Intelligence Index	51.3 (source, via OpenRouter)
Open weights	No
Speed	Not measured yet
Listed	2026-10-26

Maker's description (technical)

GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots...

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