GPT-6 Luna (Low) vs gpt-oss-20b (High)
Which is better for the money: GPT-6 Luna (Low) by OpenAI or gpt-oss-20b (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 (Low)
gpt-oss-20b (High) vs GPT-6 Luna (Low): 58.1% less intelligence, 171.0% more cost to run the AA benchmark, and 154.4% slower end-to-end.
| Metric | GPT-6 Luna (Low) | gpt-oss-20b (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.5 | 9.0 | −58.1% gpt-oss-20b (High) is 58.1% less intelligent |
| Total AA cost (lower is better) | $10.63 | $28.81 | +171.0% gpt-oss-20b (High) is 2.7× more expensive |
| End-to-end time (lower is better) | 6.60s | 16.79s | +154.4% gpt-oss-20b (High) is 154.4% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.05 / $0.22 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6 Luna (Low) is on today's frontier: nothing is both smarter and cheaper.
- gpt-oss-20b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
GPT-6 Luna (Low)gpt-oss-20b (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-low/gpt-oss-20b · Markdown: /api/v1/compare/gpt-6-luna-low/gpt-oss-20b?format=md · llms.txt · agent skill