By Roman Aglaganov
OpenAI released GPT-6.1 Terra on 26 October. It replaces GPT-5.6 Terra and sits in the middle of OpenAI’s range, between the cheap GPT-6 Luna and the more capable GPT-6.1 Sol and GPT-6 Astra. Its focus is computer use: an AI operating apps and websites the way a person does, by looking at the screen and clicking and typing.
What OpenAI says it does
OpenAI describes Terra as “a fast, efficient model that combines detailed visual reasoning and precise computer use alongside clearer, more natural writing”, aimed at everyday office work “from drafting proposals and interpreting technical drawings to filling out forms and editing videos”.
The benchmark figures are OpenAI’s. On Agents’ Last Exam, a test of professional tasks, it says Terra scored 60.0% at maximum effort at a cost of $1.01 per task, against 59.3% for GPT-6 Astra at $7.24. On OSWorld 2.1, a test of working in desktop apps, Terra scored 74.2%, up from 57.1% for the previous Terra, InfoWorld reports. OpenAI also says Terra completes computer tasks more than three times faster than Astra and Sol, and that its error rate on a set of tricky prompts fell from 53.6% to 16.7% at low effort.
Terra does not top every chart. According to figures reported by InfoWorld, Anthropic’s Claude Opus 5.5 scored 63.2% on Agents’ Last Exam, at a much higher cost per task, and Claude Sonnet 5.5 led OSWorld 2.1 at 83.9%.
Price and availability
In the API, as gpt-6.1-terra, it costs $1 per million input tokens and $5 per million output tokens, half the price of GPT-6.1 Sol and of the old Terra. In ChatGPT it is available to Plus, Pro, Enterprise and Edu users through ChatGPT Work and Codex.
Safety
OpenAI says Terra meets the “Critical” cybersecurity threshold in its Preparedness Framework, so it keeps the protections built for GPT-6 Astra, and that it is more likely than the old Terra to stay within scope and to disclose its limitations. Analysts quoted by InfoWorld add a practical caution: cheaper tokens are only part of the cost of using agents, because someone still has to review and check their work.
