import type { AgentTrace } from './types';
/**
 * Model pricing per 1M tokens (USD).
 */
export declare const PRICING: Record<string, {
    input: number;
    output: number;
}>;
export interface CostBreakdown {
    model: string;
    input_tokens: number;
    output_tokens: number;
    input_cost: number;
    output_cost: number;
    total_cost: number;
}
export interface CostReport {
    breakdowns: CostBreakdown[];
    total_input_tokens: number;
    total_output_tokens: number;
    total_cost: number;
}
/**
 * Calculate cost from an AgentTrace.
 */
export declare function calculateCost(trace: AgentTrace): CostReport;
/**
 * Format cost report for display.
 */
export declare function formatCostReport(report: CostReport): string;
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