OpenAI launched GPT-6.1 Terra on October 26, with standard API prices 50% lower than GPT-5.6 Terra. Designed for routine office tasks, screen reading, app navigation and drafting replies, the model is available to Plus, Pro, Enterprise and Edu subscribers through ChatGPT Work and Codex, as well as to developers as gpt-6.1-terra. In an internal OpenAI test, its factual error rate at low reasoning effort fell from 53.6% to 16.7%, while reaching 4.3% at maximum effort. On Terminal-Bench 4.0, it completed 50.3% of tasks at maximum effort, compared with 21.5% for GPT-5.6 Terra, and OpenAI says it performs tasks more than three times faster on average than GPT-6 Astra and GPT-6.1 Sol.
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