OpenAI releases GPT-6.1 Terra at half the API price

OpenAI released GPT-6.1 Terra on October 26, positioning the model as a lower-cost option for computer-based and routine professional work. Its standard API rates are $1 per million input tokens and $5 per million output tokens, half the reported rates for GPT-5.6 Terra. The model is available to Plus, Pro, Enterprise and Edu users through ChatGPT Work and Codex, and to developers through OpenAI’s API. OpenAI describes Terra as a tool for tasks such as reading invoices and entering their details into accounting software, filling out forms, interpreting technical drawings and drafting proposals. OpenAI reported gains over its predecessor on selected tests. On TerminalBench 4.0, a coding-agent benchmark, Terra solved 50.3% of tasks at maximum reasoning effort, compared with 21.5% for GPT-5.6 Terra. The company also reported that Terra’s error rate on its internal error-inducing-prompt benchmark was 16.7% at low effort, down from 53.6%. At maximum effort, it said the rate was 4.3%, 18 percentage points below its predecessor. The company’s figures reflect specific benchmarks and settings. OpenAI recommends GPT-6.1 Sol or GPT-6 Astra for its most complex coding work, rather than...