Model Inference Cost Calculator

Create a comprehensive model inference cost calculator.

## Models to Compare
{{model_list}}

## Usage Patterns
{{usage_patterns}}

## Monthly Volume
- Requests: {{monthly_requests}}
- Avg input tokens: {{avg_input_tokens}}
- Avg output tokens: {{avg_output_tokens}}

Build a calculator that computes:

1. **Per-Request Cost**
   - Input token cost
   - Output token cost
   - API overhead

2. **Monthly Projections**
   - Base cost
   - Volume discounts
   - Caching savings

3. **Optimization Scenarios**
   - Model tiering impact
   - Prompt compression savings
   - Batch processing benefits

Output as interactive spreadsheet formulas or Python notebook.