OpenAI on October 26, 2026 released GPT-6.1 Terra, the newest model in its GPT-6 family and the successor to GPT-5.6 Terra. The company pitches it as a fast, lower-cost option for everyday office and agent work: reading what is on a screen, operating desktop applications, interpreting images and technical drawings, and drafting text. It is available immediately to Plus, Pro, Enterprise and Edu subscribers in ChatGPT Work and Codex, and to developers through the API under the model name gpt-6.1-terra.
Price is the centerpiece of the launch. OpenAI lists standard API pricing at $1 per million input tokens, $0.05 per million cached input tokens and $5 per million output tokens, which it says is 50% below both GPT-5.6 Terra and the more capable GPT-6.1 Sol. OpenAI's developer documentation lists a context window of about 1.05 million tokens, text and image input, text-only output, and support for tools including computer use through the Responses API. Requests with more than 272,000 input tokens are billed at higher rates, according to the same documentation.
Most of the performance claims come from OpenAI's own testing. On Agents' Last Exam, a benchmark of professional software tasks, OpenAI says Terra scores 15 percentage points higher than GPT-5.6 Terra at medium reasoning effort for roughly a third of the cost, and performs on par with its flagship GPT-6 Astra at one-tenth the price per token. The company also says Terra completes tasks more than three times faster than GPT-6 Astra and GPT-6.1 Sol, and that at maximum effort it costs about nine times less per task than Anthropic's Claude Opus 5.5 on that benchmark.
OpenAI reports gains on coding and accuracy as well. It says Terra solves 50.3% of Terminal-Bench 4.0 tasks at maximum reasoning effort, more than double GPT-5.6 Terra's published 21.5%, and that on an internal set of prompts designed to provoke mistakes, the error rate at low effort fell from 53.6% to 16.7%, and to 4.3% at maximum effort. The internal factuality test is not public, and DigiEditorial has not independently reproduced any of these results. OpenAI itself still recommends GPT-6.1 Sol or GPT-6 Astra for the most complex coding work.
On safety, OpenAI says GPT-6.1 Terra meets the Critical threshold for cybersecurity under its Preparedness Framework and ships with the same protections the company developed for GPT-6 Astra. It also says the model is more likely than its predecessor to stay within the scope of a task, disclose its limitations, and resist prompt-injection attempts, with details in an accompanying system card.
The model reached partner clouds on day one. Amazon Web Services announced general availability of GPT-6.1 Terra on Amazon Bedrock the same day, adding to OpenAI's recent push to sell its models beyond Microsoft's Azure.
DigiEditorial treats OpenAI's October 26 announcement and developer documentation as primary sources and corroborated the release date, availability and pricing against reporting from The Verge and BleepingComputer. Benchmark, speed and cost-per-task comparisons are OpenAI's self-reported figures.