GPT-6.1 Sol (Medium) vs GPT-6 Luna (Xhigh)
Which is better for the money: GPT-6.1 Sol (Medium) by OpenAI or GPT-6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-6.1 Sol (Medium) scores 13.2 points higher (47.8 vs 34.6) but costs 5.4× as much to run the benchmark ($361 vs $66.8; both mid-range class). They are not alternatives at one budget: pick GPT-6.1 Sol (Medium) when you need intelligence above 34.6, and GPT-6 Luna (Xhigh) when 34.6 is enough.
| Metric | GPT-6.1 Sol (Medium) | GPT-6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 47.8 | 34.6 | −27.6% GPT-6 Luna (Xhigh) is 27.6% less intelligent |
| Total AA cost (lower is better) | $361.37 | $66.81 | −81.5% GPT-6 Luna (Xhigh) is 81.5% cheaper |
| End-to-end time (lower is better) | 13.94s | 28.32s | +103.2% GPT-6 Luna (Xhigh) is 103.2% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Xhigh) vs GPT-6.1 Sol (Medium): 27.6% less intelligence, 81.5% less cost to run the AA benchmark, and 103.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6.1 Sol (Medium) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
GPT-6.1 Sol (Medium)GPT-6 Luna (Xhigh)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-1-sol-medium/gpt-6-luna-xhigh · Markdown: /api/v1/compare/gpt-6-1-sol-medium/gpt-6-luna-xhigh?format=md · llms.txt · agent skill