DeepSeek-V3.1 vs Gemini 3.5 Flash
DeepSeek vs Google — benchmarks, pricing, and capabilities side by side.
- •Gemini 3.5 Flash has the higher intelligence index (92.2 vs 59.8)
- •DeepSeek-V3.1 is cheaper ($0.21 vs $1.50 per 1M input)
- •Gemini 3.5 Flash has a larger context window (1M)
| DeepSeek-V3.1 | Gemini 3.5 Flash | |
|---|---|---|
| Intelligence index | 59.8 | 92.2 |
| Developer | DeepSeek | |
| Type | LLM | Multimodal |
| Access | Open weights | API only |
| Context window | 163,840 tokens | 1,048,576 tokens |
| Input price | $0.21 / 1M | $1.50 / 1M |
| Output price | $0.79 / 1M | $9.00 / 1M |
| Speed | — | 221 tok/s |
| Released | August 21, 2025 | May 19, 2026 |
| Parameters | 671B (37B active) | — |
| Input modalities | Text | Text, Image, Audio, Video |
| Output modalities | Text | Text |
Shared benchmarks
DeepSeek-V3.1
Gemini 3.5 Flash
GPQA Diamond
74.9
92.2
Humanity’s Last Exam
15.9
41