OpenAI released GPT-6.1 Terra on Oct. 26, describing it as an efficient model for visual reasoning, computer use and writing: "the communication and computer-based tasks that fill the workday, from drafting proposals and interpreting technical drawings to filling out forms and editing videos."

API pricing is $1 per million input tokens and $5 per million output tokens, which OpenAI says is 50% below GPT-5.6 Terra and GPT-6.1 Sol. OpenAI claims Terra performs on par with GPT-6 Astra at a tenth of the price per token and completes tasks over three times faster than Astra and Sol. On OpenAI's internal benchmark, the error rate at low reasoning effort fell from 53.6% with GPT-5.6 Terra to 16.7%. It scored 50.3% on Terminal-Bench 4.0 at maximum effort, though OpenAI still recommends Sol or Astra for the hardest coding work.

Terra is available to Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex, and in the API as gpt-6.1-terra. All figures are OpenAI's own.