GPT-6 Luna (Medium) vs gpt-oss-120b (High)
Which is better for the money: GPT-6 Luna (Medium) by OpenAI or gpt-oss-120b (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Luna (Medium)
gpt-oss-120b (High) vs GPT-6 Luna (Medium): 61.2% less intelligence, 293.7% more cost to run the AA benchmark, and 50.1% slower end-to-end.
| Metric | GPT-6 Luna (Medium) | gpt-oss-120b (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.9 | 11.6 | −61.2% gpt-oss-120b (High) is 61.2% less intelligent |
| Total AA cost (lower is better) | $31.17 | $122.71 | +293.7% gpt-oss-120b (High) is 3.9× more expensive |
| End-to-end time (lower is better) | 8.25s | 12.38s | +50.1% gpt-oss-120b (High) is 50.1% slower |
| 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 (Medium) 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 (Medium)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-medium/gpt-oss-120b · Markdown: /api/v1/compare/gpt-6-luna-medium/gpt-oss-120b?format=md · llms.txt · agent skill