GeminivsGemini

Gemini 3.1 Pro 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

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
86
vs
0
Code Review
84
vs
0
Summarization
87
vs
0
Q&A
87
vs
0
Extraction
85
vs
0
Reasoning
90
vs
0
Classification
86
vs
0
Creative Writing
84
vs
0
Gemini 3.1 Pro
Gemini Omni 1.1 Flash

Guidance

When to use Gemini 3.1 Pro vs Gemini Omni 1.1 Flash

Choose Gemini 3.1 Pro 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
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 instead of Gemini Omni 1.1 Flash?

Gemini 3.1 Pro 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?

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

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

Gemini 3.1 Pro 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.