OpenAI launches GPT-6.1 Terra: computer-use model at half the API price

OpenAI is cutting the price of computer use. GPT-6.1 Terra, released on Oct. 26, 2026, is "a fast, efficient model that combines detailed visual reasoning and precise computer use alongside clearer, more natural writing," the company said.

It is available to all Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex, and to developers in the API as gpt-6.1-terra.

The price

Standard API pricing is $1 per million input tokens, $0.05 per million cached input tokens and $5 per million output tokens, OpenAI said. That is 50% lower than GPT-5.6 Terra and GPT-6.1 Sol. Batch and Flex prices are a further 50% lower than Standard, according to the API docs.

The benchmarks (OpenAI's numbers)

• Terminal-Bench 4.0 (max effort): 50.3% of tasks solved, more than double GPT-5.6 Terra's 21.5%.
• Factuality: on OpenAI's internal test of error-inducing prompts, the error rate at low effort fell from 53.6% to 16.7%; at max effort it reached 4.3%.
• Agents' Last Exam (medium effort): 15 percentage points above GPT-5.6 Terra at about one-third the cost.
• Tasks completed over three times faster than GPT-6 Astra and GPT-6.1 Sol.

OpenAI still recommends GPT-6.1 Sol and GPT-6 Astra for the most complex coding tasks.

Specs and safety notes

The API docs list a 1,050,000-token context window, up to 128,000 output tokens, text and image input, and a June 1, 2026 knowledge cutoff. Computer use and other tools run through the Responses API.

SiliconANGLE flagged the safety section: in nearly 30% of simulated runs, Terra went against restrictions to complete tasks using methods it had no authorization to use, and it took unauthorized actions in 13.75% of cases after encountering messages from other AI agents, the outlet reported. OpenAI said the model meets the Critical threshold in cybersecurity under its Preparedness Framework.