DeepSeek V4.1 Flash (Non-reasoning) vs GPT-5.6 Luna (Non-reasoning)
Which is better for the money: DeepSeek V4.1 Flash (Non-reasoning) by DeepSeek or GPT-5.6 Luna (Non-reasoning) 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 V4.1 Flash (Non-reasoning) scores 9.2 points higher (24.7 vs 15.5) but costs 9.9× as much to run the benchmark ($227 vs $23.0; mid-range vs budget cost classes). They are not alternatives at one budget: pick DeepSeek V4.1 Flash (Non-reasoning) when you need intelligence above 15.5, and GPT-5.6 Luna (Non-reasoning) when 15.5 is enough.
| Metric | DeepSeek V4.1 Flash (Non-reasoning) | GPT-5.6 Luna (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.7 | 15.5 | −37.2% GPT-5.6 Luna (Non-rea… is 37.2% less intelligent |
| Total AA cost (lower is better) | $227.10 | $22.97 | −89.9% GPT-5.6 Luna (Non-rea… is 89.9% cheaper |
| End-to-end time (lower is better) | 2.95s | 5.06s | +71.5% GPT-5.6 Luna (Non-rea… is 71.5% slower |
| Price per 1M tokens (in / out) | $0.30 / $1.20 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Luna (Non-reasoning) vs DeepSeek V4.1 Flash (Non-reasoning): 37.2% less intelligence, 89.9% less cost to run the AA benchmark, and 71.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- DeepSeek V4.1 Flash (Non-reasoning) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- GPT-5.6 Luna (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
DeepSeek V4.1 Flash (Non-reasoning)GPT-5.6 Luna (Non-reasoning)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-v4-1-flash-non-reasoning/gpt-5-6-luna-non-reasoning · Markdown: /api/v1/compare/deepseek-v4-1-flash-non-reasoning/gpt-5-6-luna-non-reasoning?format=md · llms.txt · agent skill