Output Format: Cost Attribution Report

Generate a structured cost attribution report for LLM usage.

Usage Data:
{{usage_metrics}}

Cost Centers:
{{cost_centers}}

Time Period:
{{reporting_period}}

OUTPUT FORMAT:
```markdown
# LLM Cost Attribution Report
## Period: [dates]

### Executive Summary
| Metric | Value |
|--------|-------|
| Total Cost | $X |
| Cost per Query | $X |
| Top Cost Driver | [name] |

### Cost by Department
| Department | Queries | Tokens | Cost | % of Total |
|------------|---------|--------|------|------------|

### Cost by Model
| Model | Input Tokens | Output Tokens | Cost |
|-------|--------------|---------------|------|

### Optimization Opportunities
1. [Opportunity]: Potential savings $X
2. [Opportunity]: Potential savings $X

### Recommendations
- [Action item with expected impact]
```