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DeepSeek V4 vs Gemini 3.5 Flash

DeepSeek V4 leads in 2 of 8 categories

Arena ELO

Tie

Cheaper

DeepSeek V4

Faster

Tie

Detailed Comparison

CategoryDeepSeek V4Gemini 3.5 Flash
ProviderDeepSeek Google
Context Window128K 1M WIN
Input Price ($/1M)$0.435 WIN$1.5
Output Price ($/1M)$0.87 WIN$9
Arena ELON/A N/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceYes No

Frequently Asked Questions

Which is cheaper, DeepSeek V4 or Gemini 3.5 Flash?

DeepSeek V4 is approximately 88% cheaper than Gemini 3.5 Flash per million tokens.

Which has a larger context window?

DeepSeek V4 supports 128K context, while Gemini 3.5 Flash supports 1M.

Is DeepSeek V4 or Gemini 3.5 Flash open source?

DeepSeek V4 is open source. Gemini 3.5 Flash is proprietary.