GeminivsDeepSeek

Gemini 3.1 Pro Custom Tools vs DeepSeek Flash

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Gemini 3.1 Pro Custom Tools

Mid-tier

DeepSeek Flash

Fast / Budget
Input $/MTok
$2.00
$0.15
Output $/MTok
$12.00
$0.60
Cache discount
90% off
98% off
Context
1.0M
1M

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Gemini 3.1 Pro Custom Tools
DeepSeek Flash

Guidance

When to use Gemini 3.1 Pro Custom Tools vs DeepSeek Flash

Choose Gemini 3.1 Pro Custom Tools when...

  • -You need a larger context window (1.0M vs 1M)
  • Similar performance; consider provider preference or ecosystem fit.

Choose DeepSeek Flash when...

  • -Cost matters: 93% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Gemini 3.1 Pro Custom Tools
DeepSeek Flash
100K tokens
$0.50
$0.03Cheaper
1M tokens
$8.20
$0.28Cheaper
10M tokens
$82.00
$2.85Cheaper

FAQ

When should I use Gemini 3.1 Pro Custom Tools instead of DeepSeek Flash?

Gemini 3.1 Pro Custom Tools and DeepSeek Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is DeepSeek Flash cheaper than Gemini 3.1 Pro Custom Tools?

Yes. DeepSeek Flash input costs $0.15/MTok vs $2.00/MTok for Gemini 3.1 Pro Custom Tools, saving 93% on input.

What are the context window sizes for Gemini 3.1 Pro Custom Tools and DeepSeek Flash?

Gemini 3.1 Pro Custom Tools has a 1.0M token context window. DeepSeek Flash has a 1M token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.