DeepSeek V4 Flash 0731 (Max) vs GPT-5.5 (Medium)
Which is better for the money: DeepSeek V4 Flash 0731 (Max) by DeepSeek or GPT-5.5 (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick DeepSeek V4 Flash 0731 (Max)
GPT-5.5 (Medium) vs DeepSeek V4 Flash 0731 (Max): 1.5% less intelligence, 949.5% more cost to run the AA benchmark, and 43.4% faster end-to-end.
| Metric | DeepSeek V4 Flash 0731 (Max) | GPT-5.5 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.3 | 33.8 | −1.5% GPT-5.5 (Medium) is 1.5% less intelligent |
| Total AA cost (lower is better) | $199.63 | $2,095.12 | +949.5% GPT-5.5 (Medium) is 10× more expensive |
| End-to-end time (lower is better) | 17.63s | 9.97s | −43.4% GPT-5.5 (Medium) is 43.4% faster |
| Price per 1M tokens (in / out) | $0.14 / $0.28 | $5.00 / $30.0 | |
| 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-5.5 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
DeepSeek V4 Flash 0731 (Max)GPT-5.5 (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/gpt-5-5-medium · Markdown: /api/v1/compare/deepseek-v4-flash/gpt-5-5-medium?format=md · llms.txt · agent skill