GeminivsGemini

Gemini 3.1 Pro Custom Tools vs Gemini Omni 1.1 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

Gemini Omni 1.1 Flash

Fast / Budget
Input $/MTok
$2.00
$1.50
Output $/MTok
$12.00
$9.00
Cache discount
90% off
0% off
Context
1,048.576K
1,048.576K

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
Gemini Omni 1.1 Flash

Guidance

When to use Gemini 3.1 Pro Custom Tools vs Gemini Omni 1.1 Flash

Choose Gemini 3.1 Pro Custom Tools when...

  • Similar performance; consider provider preference or ecosystem fit.

Choose Gemini Omni 1.1 Flash when...

  • -Cost matters: 25% 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
Gemini Omni 1.1 Flash
100K tokens
$0.50
$0.38Cheaper
1M tokens
$8.20
$3.75Cheaper
10M tokens
$82.00
$37.50Cheaper

FAQ

When should I use Gemini 3.1 Pro Custom Tools instead of Gemini Omni 1.1 Flash?

Gemini 3.1 Pro Custom Tools and Gemini Omni 1.1 Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is Gemini Omni 1.1 Flash cheaper than Gemini 3.1 Pro Custom Tools?

Yes. Gemini Omni 1.1 Flash input costs $1.50/MTok vs $2.00/MTok for Gemini 3.1 Pro Custom Tools, saving 25% on input.

What are the context window sizes for Gemini 3.1 Pro Custom Tools and Gemini Omni 1.1 Flash?

Gemini 3.1 Pro Custom Tools has a 1,048.576K token context window. Gemini Omni 1.1 Flash has a 1,048.576K token context window.

Track your real costs

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