GPT-6 Luna (Xhigh) vs gpt-oss-120b (High)
Which is better for the money: GPT-6 Luna (Xhigh) by OpenAI or gpt-oss-120b (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-6 Luna (Xhigh)
gpt-oss-120b (High) vs GPT-6 Luna (Xhigh): 66.5% less intelligence, 83.7% more cost to run the AA benchmark, and 60.5% faster end-to-end.
| Metric | GPT-6 Luna (Xhigh) | gpt-oss-120b (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 11.6 | −66.5% gpt-oss-120b (High) is 66.5% less intelligent |
| Total AA cost (lower is better) | $66.81 | $122.71 | +83.7% gpt-oss-120b (High) is 83.7% more expensive |
| End-to-end time (lower is better) | 28.32s | 11.19s | −60.5% gpt-oss-120b (High) is 60.5% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.15 / $0.60 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
- gpt-oss-120b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
GPT-6 Luna (Xhigh)gpt-oss-120b (High)Today's Pareto frontierOpen-weights 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-luna-xhigh/gpt-oss-120b · Markdown: /api/v1/compare/gpt-6-luna-xhigh/gpt-oss-120b?format=md · llms.txt · agent skill