DeepSeek V4 Flash 0420 (Max) vs gpt-oss-20b (High)
Which is better for the money: DeepSeek V4 Flash 0420 (Max) by DeepSeek 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
DeepSeek V4 Flash 0420 (Max) scores 15.2 points higher (24.2 vs 9.0) but costs 5.2× as much to run the benchmark ($149 vs $28.8; mid-range vs budget cost classes). They are not alternatives at one budget: pick DeepSeek V4 Flash 0420 (Max) when you need intelligence above 9.0, and gpt-oss-20b (High) when 9.0 is enough.
| Metric | DeepSeek V4 Flash 0420 (Max) | gpt-oss-20b (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.2 | 9.0 | −62.8% gpt-oss-20b (High) is 62.8% less intelligent |
| Total AA cost (lower is better) | $149.48 | $28.81 | −80.7% gpt-oss-20b (High) is 80.7% cheaper |
| End-to-end time (lower is better) | 100.76s | 15.23s | −84.9% gpt-oss-20b (High) is 84.9% faster |
| Price per 1M tokens (in / out) | $0.11 / $0.23 | $0.05 / $0.22 | |
| Input modalities | Text | Text |
gpt-oss-20b (High) vs DeepSeek V4 Flash 0420 (Max): 62.8% less intelligence, 80.7% less cost to run the AA benchmark, and 84.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- DeepSeek V4 Flash 0420 (Max) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
- gpt-oss-20b (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
DeepSeek V4 Flash 0420 (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/deepseek-v4-flash-0420/gpt-oss-20b · Markdown: /api/v1/compare/deepseek-v4-flash-0420/gpt-oss-20b?format=md · llms.txt · agent skill