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Project	Deployment	Preview	Comments	Updated (UTC)
docs	Skipped			Dec 3, 2025 4:31am

Greptile Overview

Greptile Summary

Fixed token count aggregation in calculateCostSummary to handle both naming conventions (prompt/input and completion/output) when extracting token usage from trace spans.

Key changes:

• Added fallback logic using nullish coalescing to check both span.tokens.prompt and span.tokens.input for prompt tokens
• Added fallback logic for span.tokens.completion and span.tokens.output for completion tokens
• Extracted token values into variables to ensure consistency across both total and per-model aggregation
• Removed outdated comments that no longer applied
• Aligns with existing pattern used in telemetry.ts

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The fix is a straightforward bug fix that adds defensive fallback logic for token counting. It aligns with existing patterns in the codebase (telemetry.ts), has no breaking changes, and only improves accuracy of token aggregation without affecting other functionality
• No files require special attention

Important Files Changed

File Analysis

Sequence Diagram

sequenceDiagram
    participant Caller
    participant calculateCostSummary
    participant collectCostSpans
    participant TraceSpans
    
    Caller->>calculateCostSummary: Call with traceSpans[]
    calculateCostSummary->>calculateCostSummary: Initialize totals & models object
    calculateCostSummary->>collectCostSpans: Recursively collect spans with cost data
    collectCostSpans->>TraceSpans: Traverse span tree
    TraceSpans-->>collectCostSpans: Return spans with cost info
    collectCostSpans-->>calculateCostSummary: Return costSpans[]
    
    loop For each costSpan
        calculateCostSummary->>calculateCostSummary: Extract promptTokens (prompt ?? input)
        calculateCostSummary->>calculateCostSummary: Extract completionTokens (completion ?? output)
        calculateCostSummary->>calculateCostSummary: Aggregate costs and tokens
        calculateCostSummary->>calculateCostSummary: Update model-specific metrics
    end
    
    calculateCostSummary->>calculateCostSummary: Add BASE_EXECUTION_CHARGE
    calculateCostSummary-->>Caller: Return cost summary with totals