DeepSeek-V4-Pro vs GPT-5.1
DeepSeek vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 88.2)
- •DeepSeek-V4-Pro is cheaper ($0.44 vs $1.25 per 1M input)
- •GPT-5.1 is faster
- •DeepSeek-V4-Pro has a larger context window (1M)
| DeepSeek-V4-Pro | GPT-5.1 | |
|---|---|---|
| Intelligence index | 88.2 | 89 |
| Developer | DeepSeek | OpenAI |
| Type | LLM | LLM |
| Access | Open weights | API only |
| Context window | 1,048,576 tokens | 400,000 tokens |
| Input price | $0.44 / 1M | $1.25 / 1M |
| Output price | $0.87 / 1M | $10.00 / 1M |
| Speed | 30 tok/s | 115 tok/s |
| Released | April 24, 2026 | November 12, 2025 |
| Parameters | 1.6T (49B active) | — |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
DeepSeek-V4-Pro
GPT-5.1
GPQA Diamond
90.1
88.1
Humanity’s Last Exam
35.9
26.5
LiveCodeBench
93.5
86.8
MMLU-Pro
87.5
87