DeepSeek-V2.5 vs GPT-5.1
DeepSeek vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 63.4)
- •DeepSeek-V2.5 is cheaper ($0.14 vs $1.25 per 1M input)
- •GPT-5.1 is faster
- •GPT-5.1 has a larger context window (400K)
| DeepSeek-V2.5 | GPT-5.1 | |
|---|---|---|
| Intelligence index | 63.4 | 89 |
| Developer | DeepSeek | OpenAI |
| Type | LLM | LLM |
| Access | Open weights | API only |
| Context window | 8,192 tokens | 400,000 tokens |
| Input price | $0.14 / 1M | $1.25 / 1M |
| Output price | $0.28 / 1M | $10.00 / 1M |
| Speed | 100 tok/s | 115 tok/s |
| Released | May 8, 2024 | November 12, 2025 |
| Parameters | 236000000000 | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |