DeepSeek V4 Flash 0731 (Max) vs GPT-5.6 Luna (High)
Which is better for the money: DeepSeek V4 Flash 0731 (Max) by DeepSeek or GPT-5.6 Luna (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
DeepSeek V4 Flash 0731 (Max) scores 2.2 points higher (34.3 vs 32.1) but costs 1.8× as much to run the benchmark ($200 vs $108; both mid-range class). Pick DeepSeek V4 Flash 0731 (Max) when the extra intelligence is worth the premium, otherwise GPT-5.6 Luna (High).
| Metric | DeepSeek V4 Flash 0731 (Max) | GPT-5.6 Luna (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.3 | 32.1 | −6.4% GPT-5.6 Luna (High) is 6.4% less intelligent |
| Total AA cost (lower is better) | $199.63 | $108.15 | −45.8% GPT-5.6 Luna (High) is 45.8% cheaper |
| End-to-end time (lower is better) | 18.04s | 12.33s | −31.7% GPT-5.6 Luna (High) is 31.7% faster |
| Price per 1M tokens (in / out) | $0.14 / $0.28 | $0.20 / $1.20 | |
| Input modalities | Text | Text, Image |
GPT-5.6 Luna (High) vs DeepSeek V4 Flash 0731 (Max): 6.4% less intelligence, 45.8% less cost to run the AA benchmark, and 31.7% faster end-to-end.
Today's Pareto frontier
Against the frontier
- DeepSeek V4 Flash 0731 (Max) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
- GPT-5.6 Luna (High) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (High) scores 37.80 for $94.1.
DeepSeek V4 Flash 0731 (Max)GPT-5.6 Luna (High)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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