DeepSeek V3.1 Terminus vs DeepSeek-V4-Flash
DeepSeek vs DeepSeek — benchmarks, pricing, and capabilities side by side.
- •DeepSeek-V4-Flash has the higher intelligence index (89.4 vs 83.5)
- •DeepSeek-V4-Flash is cheaper ($0.10 vs $0.27 per 1M input)
- •DeepSeek-V4-Flash has a larger context window (1M)
| DeepSeek V3.1 Terminus | DeepSeek-V4-Flash | |
|---|---|---|
| Intelligence index | 83.5 | 89.4 |
| Developer | DeepSeek | DeepSeek |
| Type | LLM | LLM |
| Access | Open weights | Open weights |
| Context window | 163,840 tokens | 1,048,576 tokens |
| Input price | $0.27 / 1M | $0.10 / 1M |
| Output price | $0.95 / 1M | $0.20 / 1M |
| Speed | — | 109 tok/s |
| Released | September 22, 2025 | April 24, 2026 |
| Parameters | — | 284B (13B active) |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
Shared benchmarks
DeepSeek V3.1 Terminus
DeepSeek-V4-Flash
GPQA Diamond
79.2
89.4
Humanity’s Last Exam
15.2
32.1