Directory · Model comparison
Gemini 3.1 Flash-Lite vs Grok 4.3
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 | Grok 4.3 |
|---|---|---|
| Input cost / 1M | $0.25 | $1.25 |
| Output cost / 1M | $1.50 | $2.50 |
| Context window | 1,048,576 tokens | 1,000,000 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
Grok 4.3
- Input: 1M × $1.25 = $1.25
- Output: 1M × $2.50 = $2.50
- Total
- $3.75
Total cost savings
$2.00
Gemini 3.1 Flash-Lite saves $2.00 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. Grok 4.3 is the premium route (higher combined per-1M cost); Gemini 3.1 Flash-Lite handles routine traffic.
All premium
Grok 4.3
$187.50
100% of input and output on the premium route
Routed stack
80% → Gemini 3.1 Flash-Lite
20% → Grok 4.3
$107.50
- Routine slice
- $70.00
- Premium slice
- $37.50
Monthly savings
$80.00
42.7% lower
Rates pulled from this page's model database entries (grok-4-3, 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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