GPT-6.1 Terra (Max) is a proprietary reasoning model released in October 2026, assessed by Artificial Analysis across intelligence, cost, speed, and token use. It scores 48 on the Intelligence Index, ranking 25th among 221 models and substantially exceeding the comparable-model median of 28. The index combines ten evaluations spanning agentic knowledge work, business workflows, coding, science, reasoning, document analysis, and long-context tasks. The model accepts text and images, produces text, and has a context window of one million tokens.
The evaluation suggests strong intelligence at relatively competitive prices: input costs $1 per million tokens and output costs $5 per million, both below the listed medians of $2 and $10. Its average cost per Intelligence Index task is $0.40. However, the model used 130 million output tokens across the evaluations, compared with a median of 81 million, indicating relatively high token consumption. Artificial Analysis reports no speed measurement, and the model has no publicly available API. The page presents broad benchmark and pricing comparisons, but does not provide specific scores for the individual evaluations in the supplied information.
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