DeepSeek V4 Flash 0420 (High) vs GPT-5.6 Luna (Low)
Which is better for the money: DeepSeek V4 Flash 0420 (High) by DeepSeek or GPT-5.6 Luna (Low) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
DeepSeek V4 Flash 0420 (High) scores 3.4 points higher (24.4 vs 21.0) but costs 5.3× as much to run the benchmark ($144 vs $27.0; mid-range vs budget cost classes). They are not alternatives at one budget: pick DeepSeek V4 Flash 0420 (High) when you need intelligence above 21.0, and GPT-5.6 Luna (Low) when 21.0 is enough.
| Metric | DeepSeek V4 Flash 0420 (High) | GPT-5.6 Luna (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.4 | 21.0 | −13.9% GPT-5.6 Luna (Low) is 13.9% less intelligent |
| Total AA cost (lower is better) | $144.48 | $27.02 | −81.3% GPT-5.6 Luna (Low) is 81.3% cheaper |
| End-to-end time (lower is better) | Not reported | 5.68s | — not comparable |
| Price per 1M tokens (in / out) | $0.11 / $0.23 | $0.20 / $1.20 | |
| Input modalities | Text | Text, Image |
GPT-5.6 Luna (Low) vs DeepSeek V4 Flash 0420 (High): 13.9% less intelligence, 81.3% less cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- DeepSeek V4 Flash 0420 (High) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
DeepSeek V4 Flash 0420 (High)GPT-5.6 Luna (Low)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-high/gpt-5-6-luna-low · Markdown: /api/v1/compare/deepseek-v4-flash-0420-high/gpt-5-6-luna-low?format=md · llms.txt · agent skill