GPT-6 Luna (Low) vs GPT-6 Sol (Xhigh)
Which is better for the money: GPT-6 Luna (Low) by OpenAI or GPT-6 Sol (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 Sol (Xhigh) scores 22.7 points higher (44.2 vs 21.5) but costs 80× as much to run the benchmark ($855 vs $10.6; premium vs budget cost classes). They are not alternatives at one budget: pick GPT-6 Sol (Xhigh) when you need intelligence above 21.5, and GPT-6 Luna (Low) when 21.5 is enough.
| Metric | GPT-6 Luna (Low) | GPT-6 Sol (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.5 | 44.2 | +105.6% GPT-6 Sol (Xhigh) is 2.1× more intelligent |
| Total AA cost (lower is better) | $10.63 | $854.60 | +7939.5% GPT-6 Sol (Xhigh) is 80× more expensive |
| End-to-end time (lower is better) | 7.32s | 41.96s | +473.2% GPT-6 Sol (Xhigh) is 473.2% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (Xhigh) vs GPT-6 Luna (Low): 105.6% more intelligence, 7939.5% more cost to run the AA benchmark, and 473.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Low) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
GPT-6 Luna (Low)GPT-6 Sol (Xhigh)Today's Pareto frontierEvery other model
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