DeepSeek V4 Flash 0420 (High) vs GPT-6 Luna (Medium)
Which is better for the money: DeepSeek V4 Flash 0420 (High) by DeepSeek or GPT-6 Luna (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Clear winner
Verdict
Pick GPT-6 Luna (Medium)
GPT-6 Luna (Medium) vs DeepSeek V4 Flash 0420 (High): 22.5% more intelligence, 74.3% less cost to run the AA benchmark, and end-to-end time not fully reported.
| Metric | DeepSeek V4 Flash 0420 (High) | GPT-6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.4 | 29.9 | +22.5% GPT-6 Luna (Medium) is 22.5% more intelligent |
| Total AA cost (lower is better) | $121.20 | $31.17 | −74.3% GPT-6 Luna (Medium) is 74.3% cheaper |
| End-to-end time (lower is better) | Not reported | 8.25s | — not comparable |
| Price per 1M tokens (in / out) | $0.11 / $0.23 | $0.10 / $0.50 | |
| Input modalities | Text | Text, Image |
Today's Pareto frontier
Against the frontier
- DeepSeek V4 Flash 0420 (High) is off the frontier: at the same or lower cost, MiMo-V2.6-Flash scores 37.90 for $110.
- GPT-6 Luna (Medium) is on today's frontier: nothing is both smarter and cheaper.
DeepSeek V4 Flash 0420 (High)GPT-6 Luna (Medium)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-6-luna-medium · Markdown: /api/v1/compare/deepseek-v4-flash-0420-high/gpt-6-luna-medium?format=md · llms.txt · agent skill