DeepSeek V4 Flash 0731 (Max) vs GPT-5.5 (Xhigh)
Which is better for the money: DeepSeek V4 Flash 0731 (Max) by DeepSeek or GPT-5.5 (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
GPT-5.5 (Xhigh) scores 4.1 points higher (38.4 vs 34.3) but costs 27× as much to run the benchmark ($5294 vs $200; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Xhigh) when you need intelligence above 34.3, and DeepSeek V4 Flash 0731 (Max) when 34.3 is enough.
| Metric | DeepSeek V4 Flash 0731 (Max) | GPT-5.5 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.3 | 38.4 | +12.0% GPT-5.5 (Xhigh) is 12.0% more intelligent |
| Total AA cost (lower is better) | $199.63 | $5,294.36 | +2552.1% GPT-5.5 (Xhigh) is 27× more expensive |
| End-to-end time (lower is better) | 17.91s | 44.96s | +151.0% GPT-5.5 (Xhigh) is 151.0% slower |
| Price per 1M tokens (in / out) | $0.14 / $0.28 | $5.00 / $30.0 | |
| Input modalities | Text | Text, Image |
GPT-5.5 (Xhigh) vs DeepSeek V4 Flash 0731 (Max): 12.0% more intelligence, 2552.1% more cost to run the AA benchmark, and 151.0% slower 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-5.5 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
DeepSeek V4 Flash 0731 (Max)GPT-5.5 (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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