DeepSeek V4 Flash 0420 (High) vs GPT-5.6 Sol (Xhigh)
Which is better for the money: DeepSeek V4 Flash 0420 (High) by DeepSeek or GPT-5.6 Sol (Xhigh) 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
GPT-5.6 Sol (Xhigh) scores 19.6 points higher (44.0 vs 24.4) but costs 14× as much to run the benchmark ($2082 vs $144; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.6 Sol (Xhigh) when you need intelligence above 24.4, and DeepSeek V4 Flash 0420 (High) when 24.4 is enough.
| Metric | DeepSeek V4 Flash 0420 (High) | GPT-5.6 Sol (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.4 | 44.0 | +80.3% GPT-5.6 Sol (Xhigh) is 80.3% more intelligent |
| Total AA cost (lower is better) | $144.48 | $2,082.28 | +1341.2% GPT-5.6 Sol (Xhigh) is 14× more expensive |
| End-to-end time (lower is better) | Not reported | 69.10s | — not comparable |
| Price per 1M tokens (in / out) | $0.11 / $0.23 | $4.00 / $20.0 | |
| Input modalities | Text | Text, Image |
GPT-5.6 Sol (Xhigh) vs DeepSeek V4 Flash 0420 (High): 80.3% more intelligence, 1341.2% more 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 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
DeepSeek V4 Flash 0420 (High)GPT-5.6 Sol (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-0420-high/gpt-5-6-sol-xhigh · Markdown: /api/v1/compare/deepseek-v4-flash-0420-high/gpt-5-6-sol-xhigh?format=md · llms.txt · agent skill