DeepSeek V4.1 Flash (Non-reasoning) vs GPT-5.5 (Medium)
Which is better for the money: DeepSeek V4.1 Flash (Non-reasoning) 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.
Trade-off
Verdict
Depends on your budget
GPT-5.5 (Medium) scores 9.1 points higher (33.8 vs 24.7) but costs 8.8× as much to run the benchmark ($2095 vs $239; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Medium) when you need intelligence above 24.7, and DeepSeek V4.1 Flash (Non-reasoning) when 24.7 is enough.
| Metric | DeepSeek V4.1 Flash (Non-reasoning) | GPT-5.5 (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.7 | 33.8 | +36.8% GPT-5.5 (Medium) is 36.8% more intelligent |
| Total AA cost (lower is better) | $238.91 | $2,095.12 | +776.9% GPT-5.5 (Medium) is 8.8× more expensive |
| End-to-end time (lower is better) | 2.72s | 12.63s | +364.3% GPT-5.5 (Medium) is 364.3% slower |
| Price per 1M tokens (in / out) | $0.30 / $1.20 | $5.00 / $30.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.5 (Medium) vs DeepSeek V4.1 Flash (Non-reasoning): 36.8% more intelligence, 776.9% more cost to run the AA benchmark, and 364.3% 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-5.5 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
DeepSeek V4.1 Flash (Non-reasoning)GPT-5.5 (Medium)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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