GPT-5.6 Sol (Max) vs gpt-oss-20b (High)
Which is better for the money: GPT-5.6 Sol (Max) by OpenAI or gpt-oss-20b (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
GPT-5.6 Sol (Max) scores 38.0 points higher (47.0 vs 9.0) but costs 120× as much to run the benchmark ($3465 vs $28.8; flagship vs budget cost classes). They are not alternatives at one budget: pick GPT-5.6 Sol (Max) when you need intelligence above 9.0, and gpt-oss-20b (High) when 9.0 is enough.
| Metric | GPT-5.6 Sol (Max) | gpt-oss-20b (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 47.0 | 9.0 | −80.9% gpt-oss-20b (High) is 80.9% less intelligent |
| Total AA cost (lower is better) | $3,464.84 | $28.81 | −99.2% gpt-oss-20b (High) is 99.2% cheaper |
| End-to-end time (lower is better) | 106.87s | 15.23s | −85.7% gpt-oss-20b (High) is 85.7% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.05 / $0.22 | |
| Input modalities | Text, Image | Text |
gpt-oss-20b (High) vs GPT-5.6 Sol (Max): 80.9% less intelligence, 99.2% less cost to run the AA benchmark, and 85.7% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Max) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- 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-5.6 Sol (Max)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-5-6-sol/gpt-oss-20b · Markdown: /api/v1/compare/gpt-5-6-sol/gpt-oss-20b?format=md · llms.txt · agent skill