/**
 * Cost Tracker - Track AI API usage and costs
 */
export declare class CostTracker {
    private totalInputTokens;
    private totalOutputTokens;
    private totalCalls;
    private budgetCents;
    constructor(budgetCents?: number);
    trackUsage(inputTokens: number, outputTokens: number): void;
    getEstimatedCostCents(): number;
    isOverBudget(): boolean;
    getSummary(): string;
    getEstimate(): string;
    getStats(): {
        totalCalls: number;
        totalInputTokens: number;
        totalOutputTokens: number;
        estimatedCost: number;
    };
    reset(): void;
}
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