DeepSeek V4 Flash 0731 (Max) vs GPT-5.6 Luna (Xhigh)
Which is better for the money: DeepSeek V4 Flash 0731 (Max) by DeepSeek or GPT-5.6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick GPT-5.6 Luna (Xhigh)
GPT-5.6 Luna (Xhigh) vs DeepSeek V4 Flash 0731 (Max): 0.9% more intelligence, 10.2% less cost to run the AA benchmark, and 120.8% slower end-to-end.
| Metric | DeepSeek V4 Flash 0731 (Max) | GPT-5.6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.3 | 34.6 | +0.9% GPT-5.6 Luna (Xhigh) is 0.9% more intelligent |
| Total AA cost (lower is better) | $199.63 | $179.33 | −10.2% GPT-5.6 Luna (Xhigh) is 10.2% cheaper |
| End-to-end time (lower is better) | 18.29s | 40.39s | +120.8% GPT-5.6 Luna (Xhigh) is 120.8% slower |
| Price per 1M tokens (in / out) | $0.14 / $0.28 | $0.20 / $1.20 | |
| Input modalities | Text | Text, Image |
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 (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
DeepSeek V4 Flash 0731 (Max)GPT-5.6 Luna (Xhigh)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/gpt-5-6-luna-xhigh · Markdown: /api/v1/compare/deepseek-v4-flash/gpt-5-6-luna-xhigh?format=md · llms.txt · agent skill