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Gemini 3.1 Flash-Lite vs Gemini 3.7 Flash

Side-by-side API economics and benchmarks. Per-1M input and output rates, context window, and verified metrics.

Tale of the tape

Head-to-head specs pulled from each model profile.

Metric Gemini 3.1 Flash-Lite Gemini 3.7 Flash
Input cost / 1M $0.25 $0.75
Output cost / 1M $1.50 $3.75
Context window 1,048,576 tokens 1,048,576 tokens
MMLU score

Cost verdict

Enter monthly input and output volumes to see total cost savings.

Gemini 3.1 Flash-Lite

Input: 1M × $0.25 = $0.25
Output: 1M × $1.50 = $1.50
Total
$1.75

Gemini 3.7 Flash

Input: 1M × $0.75 = $0.75
Output: 1M × $3.75 = $3.75
Total
$4.50

Total cost savings

$2.75

Gemini 3.1 Flash-Lite saves $2.75 per month vs the other model at this volume.

Model routing savings

Uses this page's verified rates. Gemini 3.7 Flash is the premium route (higher combined per-1M cost); Gemini 3.1 Flash-Lite handles routine traffic.

Premium model

Gemini 3.7 Flash

$0.75 in · $3.75 out / 1M

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Economical model

Gemini 3.1 Flash-Lite

$0.25 in · $1.50 out / 1M

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All premium

Gemini 3.7 Flash

$225.00

100% of input and output on the premium route

Routed stack

80%Gemini 3.1 Flash-Lite

Gemini 3.7 Flash

$115.00

Routine slice
$70.00
Premium slice
$45.00

Monthly savings

$110.00

48.9% lower

Rates pulled from this page's model database entries (gemini-3-7-flash, gemini-3-1-flash-lite) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.

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