Gemini 3 Flash Preview vs DeepSeek V4 Flash 0731
Gemini 3 Flash Preview vs DeepSeek V4 Flash 0731: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- DeepSeek V4 Flash 0731 is 12× cheaper than Gemini 3 Flash Preview for the same mix of input and output tokens.
- Both have the same context window.
- DeepSeek V4 Flash 0731 is the more recent release (Jul 31, 2026).
- Only DeepSeek V4 Flash 0731 has openly published weights you can run yourself.
- Only Gemini 3 Flash Preview accepts images as input.
- DeepSeek V4 Flash 0731 scores higher on independent tests (overall index 154.5 vs 151.8).
- DeepSeek V4 Flash 0731 is both cheaper and better rated: for most uses it is the better choice.
| Gemini 3 Flash Preview | DeepSeek V4 Flash 0731 | |
|---|---|---|
| Company | Google DeepMind | DeepSeek |
| Released | Dec 17, 2025 | Jul 31, 2026 ● |
| Overall index | 151.8 | 154.5 ● |
| SWE-bench Verified | 75.4% | — |
| GPQA Diamond | 89.4% | 91.0% ● |
| AIME math | 95.6% ● | 94.4% |
| FrontierMath | 51.2% | 57.5% ● |
| SimpleQA Verified | 66.8% ● | 33.6% |
| Input (per 1M tokens) | $0.50 | $0.018 ● |
| Output (per 1M tokens) | $3 | $0.32 ● |
| Cost for 1M input + 1M output tokens | $3.50 | $0.338 ● |
| Providers | 6 | 30 ● |
| Context | 1M | 1M |
| Max output | 64K | 944K ● |
| Inputs | Text, Image, Files, Audio, Video ● | Text |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |
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