token.app › Compare › Gemini 3.1 Pro Preview Custom Tools vs DeepSeek V4 Flash 0731

Gemini 3.1 Pro Preview Custom Tools vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is 6.8× cheaper per token on a blended 3:1 basis.

Head to head
Blended price uses a 3:1 input:output mix
Gemini 3.1 Pro Preview Custom ToolsDeepSeek V4 Flash 0731
ProviderGoogleDeepSeek
Input $/1M$2.00$0.440
Output $/1M$12.00$1.32
Blended $/1M$4.50$0.660
Context window1.0M1.0M
Max output66K131K
ReleasedFeb 2026Jul 2026
LicenceProprietaryOpen weights
Choose Gemini 3.1 Pro Preview Custom Tools if…
  • No clear advantage on the data we hold.
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.660 vs $4.50 blended
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
FAQ
Which is better, Gemini 3.1 Pro Preview Custom Tools or DeepSeek V4 Flash 0731?
We do not hold independently-run benchmark scores covering both Gemini 3.1 Pro Preview Custom Tools and DeepSeek V4 Flash 0731, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Gemini 3.1 Pro Preview Custom Tools cheaper than DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is cheaper: $0.660 versus $4.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $0.440. Output alone: $12.00 vs $1.32.
What context windows do Gemini 3.1 Pro Preview Custom Tools and DeepSeek V4 Flash 0731 have?
Gemini 3.1 Pro Preview Custom Tools: 1,048,576 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes Gemini 3.1 Pro Preview Custom Tools and DeepSeek V4 Flash 0731?
Gemini 3.1 Pro Preview Custom Tools is made by Google. DeepSeek V4 Flash 0731 is made by DeepSeek.
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