OpenAI launches GPT-6.1 Terra: fast, low-cost computer use at $1/$5 per million tokens, half the price of GPT-5.6 Terra and GPT-6.1 Sol
On Oct 26 OpenAI released GPT-6.1 Terra, an efficient model for visual reasoning, precise computer use and natural writing. It is rolling out today to Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex, and in the API as gpt-6.1-terra. Standard API pricing is $1 input, $0.05 cached input and $5 output per million tokens, which OpenAI says is 50% lower than GPT-5.6 Terra and GPT-6.1 Sol, with a 1,050,000-token context window. By OpenAI's figures it scores 15 points higher than GPT-5.6 Terra on Agents' Last Exam at medium effort for about a third of the cost, and solves 50.3% of Terminal-Bench 4.0 at max effort.

Key Takeaways
- Pricing (official docs): $1 input, $0.05 cached input, $1.25 for 30-minute cache writes and $5 output per million tokens; requests over 272K input tokens are billed at 2x input and 1.5x output; Batch/Flex are half price and Fast mode is 2x
- Specs: 1,050,000-token context, 922,000 max input and 128,000 max output tokens, Jun 1 2026 knowledge cutoff; reasoning.effort from none to max, and tool calling requires the Responses API
- Computer use (OpenAI figures): on Agents' Last Exam at medium effort it beats GPT-5.6 Terra by 15 points at about one-third the cost, and matches GPT-6 Astra at one-tenth the price per token; it finishes tasks over 3x faster than GPT-6 Astra and GPT-6.1 Sol
- Coding and factuality (OpenAI figures): 50.3% on Terminal-Bench 4.0 at max effort, more than double GPT-5.6 Terra's published 21.5%; error rate on an internal error-inducing prompt set fell from 53.6% to 16.7% at low effort
- Safety: OpenAI says it meets the Critical cybersecurity threshold under its Preparedness Framework and keeps the safeguards built for GPT-6 Astra





