50% cheaper: OpenAI brings GPT-6.1 Terra to ChatGPT and Codex
The mid-size Terra model moves up to GPT-6.1 and is available today in ChatGPT Work, Codex and the API.
OpenAI improved one of its medium-size models. It is faster and cheaper, and made fewer mistakes in its own test. It helps with everyday computer jobs like filling in forms.
Hype check
The noise matches the real change.
Our editorial opinion, based on the sources below. How we score
Your call: hype or real?
Real = it will matter in daily use. Hype = louder than it is. One vote, and it can’t be changed.
Our view and readers’ views are opinions, not statements of fact about a product.
Why it matters
A faster, cheaper model for everyday computer tasks such as filling forms and reading technical drawings.
Watch: a quiet upgrade to a mid-size model.
The details
- OpenAI calls GPT-6.1 Terra a fast model that combines detailed visual reasoning with computer use.
- It replaces GPT-5.6 Terra and sits between the Luna and Sol tiers.
- It is available today in ChatGPT Work, Codex and the .
- OpenAI says it costs 50% less than its predecessor.
- In an internal test of error-inducing prompts, the error rate at low reasoning effort fell from 53.6% to 16.7%, and to 4.3% at maximum effort.
Receipts
One trusted outlet reports it. Not confirmed yet. Open the sources and check us.
Written with the help of AI tools and checked against the sources above. How we work
See a mistake? Tell us and we’ll fix it.
