GPT-6.1 Terra (Medium) vs GPT-6 Luna (Max)
Which is better for the money: GPT-6.1 Terra (Medium) by OpenAI or GPT-6 Luna (Max) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
GPT-6.1 Terra (Medium) scores 3.2 points higher (41.3 vs 38.1) but costs 1.4× as much to run the benchmark ($175 vs $122; both mid-range class). Pick GPT-6.1 Terra (Medium) when the extra intelligence is worth the premium, otherwise GPT-6 Luna (Max).
| Metric | GPT-6.1 Terra (Medium) | GPT-6 Luna (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.3 | 38.1 | −7.7% GPT-6 Luna (Max) is 7.7% less intelligent |
| Total AA cost (lower is better) | $175.20 | $122.05 | −30.3% GPT-6 Luna (Max) is 30.3% cheaper |
| End-to-end time (lower is better) | 6.95s | 97.79s | +1307.1% GPT-6 Luna (Max) is 1307.1% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Max) vs GPT-6.1 Terra (Medium): 7.7% less intelligence, 30.3% less cost to run the AA benchmark, and 1307.1% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Medium) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Max) is on today's frontier: nothing is both smarter and cheaper.
GPT-6.1 Terra (Medium)GPT-6 Luna (Max)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-1-terra-medium/gpt-6-luna · Markdown: /api/v1/compare/gpt-6-1-terra-medium/gpt-6-luna?format=md · llms.txt · agent skill