DeepSeek V4 Pro Base vs Gemini 3.5 Flash

Pick Gemini 3.5 Flash if you want the stronger benchmark profile. DeepSeek V4 Pro Base only becomes the better choice if knowledge is the priority or you would rather avoid the extra latency and token burn of a reasoning model.

Gemini 3.5 Flash is clearly ahead on the provisional aggregate, 88 to 40. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 3.5 Flash's sharpest advantage is in reasoning, where it averages 74.7 against 51.5. DeepSeek V4 Pro Base does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.

Gemini 3.5 Flash is the reasoning model in the pair, while DeepSeek V4 Pro Base is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.