export interface StepCostRecord {
    runId: string;
    stepName: string;
    agent: string;
    cli: string;
    model: string;
    startedAt: string;
    endedAt: string;
    durationMs: number;
    estimatedInputTokens: number;
    estimatedOutputTokens: number;
    estimatedCostUsd: number;
}
export interface RunCostSummary {
    runId: string;
    totalCostUsd: number;
    totalDurationMs: number;
    steps: StepCostRecord[];
}
export interface CostTrackerOptions {
    usageFilePath?: string;
}
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