Directory · Model comparison
DeepSeek-V4-Pro vs Gemini 3.1 Flash-Lite
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 | DeepSeek-V4-Pro | Gemini 3.1 Flash-Lite |
|---|---|---|
| Input cost / 1M | $0.435 | $0.25 |
| Output cost / 1M | $0.87 | $1.50 |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| MMLU score | — | — |
Cost verdict
Enter monthly input and output volumes to see total cost savings.
DeepSeek-V4-Pro
- Input: 1M × $0.435 = $0.435
- Output: 1M × $0.87 = $0.87
- Total
- $1.31
Gemini 3.1 Flash-Lite
- Input: 1M × $0.25 = $0.25
- Output: 1M × $1.50 = $1.50
- Total
- $1.75
Total cost savings
$0.445
DeepSeek-V4-Pro saves $0.445 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. Gemini 3.1 Flash-Lite is the premium route (higher combined per-1M cost); DeepSeek-V4-Pro handles routine traffic.
All premium
Gemini 3.1 Flash-Lite
$87.50
100% of input and output on the premium route
Routed stack
80% → DeepSeek-V4-Pro
20% → Gemini 3.1 Flash-Lite
$69.70
- Routine slice
- $52.20
- Premium slice
- $17.50
Monthly savings
$17.80
20.3% lower
Rates pulled from this page's model database entries (gemini-3-1-flash-lite, deepseek-v4-pro) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.
Related comparisons
More head-to-head model matchups.