GPT-6.1 Terra Guide

GPT-6.1 Terra is a mid-tier OpenAI model released on October 26, 2026. OpenAI designed it for fast, capable computer use at a lower price: reading what is on screen, acting across apps, coding, and writing naturally.

Terra is made for everyday work you want done fast and cheaply.

ChatGPT

Now rolling out to Plus, Pro, Enterprise, and Edu users

Codex

Available inside OpenAI’s coding agent

API

Model ID gpt-6.1-terra

Input

$1 per million tokens

Cached input

$0.05 per million tokens

Output

$5 per million tokens

That sits well under the previous Terra model’s $2 input and $12 output. Prices may change, so confirm them on OpenAI’s pricing page.

• OpenAI says Terra matches GPT-6 Astra at roughly a tenth of the price per token
• OpenAI says Terra runs over three times faster than GPT-6 Astra and GPT-6.1 Sol
• Independent analysts at Artificial Analysis measured a clear gain over the previous Terra at under a third of the cost per task

Most performance numbers come from OpenAI itself. Test it on your own work.

• Reads screens and acts across apps
• Handles form filling, data entry, and app testing well
• Needs close watching at first, with approvals on for anything sensitive

• Quick edits, bug fixes, and tests in Codex
• Many small tasks run side by side
• Larger models for the hardest architecture problems

• Drafting emails and documents
• Summaries and analysis
• Research with sources

Choose Terra

High-volume, everyday, and computer-use tasks where speed and cost count

Choose a larger model

The toughest reasoning, research, and long, complex projects

• OpenAI rates Terra at its Critical level for cybersecurity under its Preparedness Framework, with safeguards in place
• Computer-using agents can act on your behalf, so restrict their access
• Never let it handle your passwords or payments

• Choose ten real tasks
• Run each one on Terra and on your current model
• Compare quality, speed, and cost per completed task

Here are the task, the files, and what done looks like. Show me your plan, then finish the task, and list anything you are unsure about.