DeepSeek V4 Flash 0420 (Max) vs GPT-5.6 Terra (Xhigh)
Which is better for the money: DeepSeek V4 Flash 0420 (Max) by DeepSeek or GPT-5.6 Terra (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 Terra (Xhigh) scores 13.8 points higher (38.0 vs 24.2) but costs 7.4× as much to run the benchmark ($1187 vs $159; premium vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.6 Terra (Xhigh) when you need intelligence above 24.2, and DeepSeek V4 Flash 0420 (Max) when 24.2 is enough.
| Metric | DeepSeek V4 Flash 0420 (Max) | GPT-5.6 Terra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.2 | 38.0 | +57.0% GPT-5.6 Terra (Xhigh) is 57.0% more intelligent |
| Total AA cost (lower is better) | $159.30 | $1,186.77 | +645.0% GPT-5.6 Terra (Xhigh) is 7.4× more expensive |
| End-to-end time (lower is better) | 100.51s | 36.37s | −63.8% GPT-5.6 Terra (Xhigh) is 63.8% faster |
| Price per 1M tokens (in / out) | $0.11 / $0.23 | $2.00 / $12.0 | |
| Input modalities | Text | Text, Image |
GPT-5.6 Terra (Xhigh) vs DeepSeek V4 Flash 0420 (Max): 57.0% more intelligence, 645.0% more cost to run the AA benchmark, and 63.8% faster end-to-end.
Today's Pareto frontier
Against the frontier
- DeepSeek V4 Flash 0420 (Max) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
- GPT-5.6 Terra (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 (Max)GPT-5.6 Terra (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/gpt-5-6-terra-xhigh · Markdown: /api/v1/compare/deepseek-v4-flash-0420/gpt-5-6-terra-xhigh?format=md · llms.txt · agent skill