GPT-6.1 Terra scores 48 on AA Coding Agent Index at one-third the cost of GPT-5.6 Terra
ArtificialAnlys · x · 2026-10-27
Artificial Analysis benchmarked OpenAI's new GPT-6.1 Terra: it scores 48 on the Coding Agent Index v2.0 — 6 points below GPT-6.1 Sol (54) and 17 above GPT-6 Luna (31).
- Priced at $1/$5 per million input/output tokens, half or less of GPT-5.6 Terra's $2/$12; cache write halved to $1.25/M
- AA calls it the first Terra-class model since GPT-5.6, delivering more intelligence for under a third of the cost
- Its xhigh and low effort settings sit on the cost-efficiency Pareto frontier, alongside Claude, DeepSeek and GLM agents in the per-task cost chart
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