GPT-6.1 Terra: OpenAI's Faster, Cheaper Model (2026)

By PowerfulAI.tools Editorial Team

OpenAI has released GPT-6.1 Terra, a new mid-sized model built for everyday computer-based work. It went live on 26 October 2026 (US time) in ChatGPT, in Codex and in the OpenAI API. Here is what it is, who can use it, what it costs and what it means if you use ChatGPT for work.

What launched

OpenAI describes GPT-6.1 Terra as "a fast, efficient model that combines detailed visual reasoning and precise computer use." In plain terms, it is designed to look at what is on your screen, understand it, and take actions across apps on your behalf, while also writing clear, natural text.

OpenAI's examples of the work it is aimed at include drafting proposals, reading technical drawings, filling out forms and editing videos. The company positions it as a step up from the earlier GPT-5.6 Terra model, not as its top model. OpenAI says that for the most complex coding tasks, GPT-6.1 Sol and GPT-6 Astra "remain the better choice."

Who can use it and where

According to OpenAI's announcement, GPT-6.1 Terra is available to all Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex, starting from launch day.

• ChatGPT: Plus, Pro, Enterprise and Edu plans, inside ChatGPT Work.
• Codex: available for the same plans.
• Developers: available in the OpenAI API under the name gpt-6.1-terra.

The announcement does not mention the Free, Go or Business plans, so we can't confirm whether those users have access. OpenAI also doesn't list any country restrictions, so Australian users on the listed plans should see it as it rolls out.

What it costs

For ChatGPT users, there is no separate charge. GPT-6.1 Terra is included in the plans listed above. OpenAI says that in ChatGPT Work and Codex, your existing usage allowance "covers more tasks than with GPT-5.6 Terra," and that the allowance is substantially larger than for GPT-6.1 Sol or GPT-6 Astra. In other words, if you often hit usage limits with the bigger models, Terra should let you get through more work.

For developers, OpenAI lists standard API pricing (in US dollars) as:

• Input: US$1 per million tokens
• Cached input: US$0.05 per million tokens
• Output: US$5 per million tokens

OpenAI says these standard API prices are 50% lower than those of GPT-5.6 Terra and GPT-6.1 Sol. These are the standard listed rates, not a promotional price.

What OpenAI says it can do

OpenAI's announcement includes a number of benchmark results. These are OpenAI's own figures, and we have not tested the model ourselves.

• Speed: OpenAI says Terra is over three times faster than GPT-6 Astra and GPT-6.1 Sol.
• Computer use: on the Agents' Last Exam benchmark, OpenAI says it scores 15 percentage points higher than GPT-5.6 Terra at medium effort, at about one-third of the cost.
• Coding: OpenAI reports 50.3% on Terminal-Bench 4.0 at maximum effort, compared with 21.5% for GPT-5.6 Terra.
• Fewer factual errors: on OpenAI's internal tests designed to trigger mistakes, the error rate at low effort fell from 53.6% to 16.7%.

OpenAI also says the model meets the "Critical" threshold for cybersecurity under its Preparedness Framework, and that it carries over the safety protections OpenAI developed for GPT-6 Astra.

What it means for ordinary users

If you pay for ChatGPT Plus or Pro, or use ChatGPT through work or university, the main change is a new option in ChatGPT Work and Codex that aims to be quicker and to stretch your usage allowance further. It is pitched at the routine jobs that fill a working day, such as filling in forms, pulling details from documents and screenshots, and drafting written material.

It is not meant to replace OpenAI's larger models for deep research or complex coding. If your work is mostly simple tasks, Terra may be the faster and more economical choice. For your hardest problems, OpenAI itself still points you to Sol or Astra.

If you use ChatGPT for free, the announcement does not say Terra is coming to your plan. For developers and businesses building on the API, the lower price per token is the headline, especially for apps that run many routine tasks.

How we checked

We checked every claim in this article against OpenAI's own published material on 27 October 2026: the official announcement, Introducing GPT-6.1 Terra, and the OpenAI API changelog at developers.openai.com/api/docs/changelog, which lists the release on 26 October. Anything we couldn't confirm from these official sources has been left out.