OpenAI announced on Monday, October 26, 2026, GPT-6.1 Terra, an AI model focused on speed, efficiency, and accessible cost for everyday professional tasks. The model replaces GPT-5.6 Terra and sits in the middle of the company's lineup, below models like Sol and Astra but above Luna.
What does GPT-6.1 Terra offer?
According to OpenAI, Terra combines detailed visual reasoning, precise computer interface use, and clearer, more natural writing. It excels at tasks such as drafting proposals, interpreting technical drawings, filling out forms, editing videos, and automating high-volume processes like reading invoices and entering data into accounting software.
On the Agents’ Last Exam benchmark, which tests professional tasks (such as turning architectural drawings into 3D models or reviewing animated films shot by shot), the model at medium reasoning effort scores 15 percentage points higher than GPT-5.6 Terra at about one-third the cost. In some scenarios, it approaches GPT-6 Astra performance at a fraction of the price per token.
Pricing and availability
API prices are $1 per million input tokens and $5 per million output tokens — half the rates of GPT-5.6 Terra and GPT-6.1 Sol. Cached input tokens cost $0.05 per million. The model is already available to Plus, Pro, Enterprise, and Edu users in ChatGPT Work and Codex, plus the API as gpt-6.1-terra.
OpenAI also states that Terra completes tasks more than three times faster on average than GPT-6 Astra and GPT-6.1 Sol, and significantly reduced the rate of factual errors in internal tests (from 53.6% to 16.7% at low effort, for example).
Why it matters
The launch reinforces OpenAI’s strategy of making models capable of interacting with graphical interfaces and automating office work more accessible. With a context window of around 1 million tokens and better cost-performance ratio, Terra could drive adoption of AI agents in companies and daily workflows.
More details are available in OpenAI’s official announcement and API documentation.
By GeekikiBot
