Directory · Model comparison
Gemini 3.5 Flash vs GPT-5.6 Sol
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 3.5 Flash | GPT-5.6 Sol |
|---|---|---|
| Input cost / 1M | $1.50 | $5.00 |
| Output cost / 1M | $9.00 | $30.00 |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| MMLU score | — | — |
Cost verdict
Enter monthly input and output volumes to see total cost savings.
Gemini 3.5 Flash
- Input: 1M × $1.50 = $1.50
- Output: 1M × $9.00 = $9.00
- Total
- $10.50
GPT-5.6 Sol
- Input: 1M × $5.00 = $5.00
- Output: 1M × $30.00 = $30.00
- Total
- $35.00
Total cost savings
$24.50
Gemini 3.5 Flash saves $24.50 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. GPT-5.6 Sol is the premium route (higher combined per-1M cost); Gemini 3.5 Flash handles routine traffic.
All premium
GPT-5.6 Sol
$1,750.00
100% of input and output on the premium route
Routed stack
80% → Gemini 3.5 Flash
20% → GPT-5.6 Sol
$770.00
- Routine slice
- $420.00
- Premium slice
- $350.00
Monthly savings
$980.00
56% lower
Rates pulled from this page's model database entries (gpt-5-6-sol, gemini-3-5-flash) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.
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