Gemini 3.5 Flash vs DeepSeek V4 Pro 0813
Gemini 3.5 Flash vs DeepSeek V4 Pro 0813: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- DeepSeek V4 Pro 0813 is 3.4× cheaper than Gemini 3.5 Flash for the same mix of input and output tokens.
- Both have the same context window.
- DeepSeek V4 Pro 0813 is the more recent release (Aug 12, 2026).
- Only DeepSeek V4 Pro 0813 has openly published weights you can run yourself.
- Only Gemini 3.5 Flash accepts images as input.
- Choose DeepSeek V4 Pro 0813 if cost matters most; choose Gemini 3.5 Flash if you need its specific strengths above. For the best results, test both on your own prompts.
| Gemini 3.5 Flash | DeepSeek V4 Pro 0813 | |
|---|---|---|
| Company | Google DeepMind | DeepSeek |
| Released | May 19, 2026 | Aug 12, 2026 ● |
| Overall index | 154.6 | 155.4 ● |
| SWE-bench Verified | 79.3% ● | 77.6% |
| GPQA Diamond | 92.8% ● | 91.7% |
| AIME math | 95.6% | 98.6% ● |
| FrontierMath | 62.8% | 64.6% ● |
| SimpleQA Verified | 66.2% ● | 52.9% |
| Input (per 1M tokens) | $1.50 | $0.66 ● |
| Output (per 1M tokens) | $9 | $1.98 ● |
| Cost for 1M input + 1M output tokens | $10.50 | $2.64 ● |
| Providers | 7 | 20 ● |
| Context | 1M | 1M |
| Max output | 64K | 384K ● |
| Inputs | Text, Image, Video, Files, Audio ● | Text |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |