/**
 * Pricing constants and calculation functions for Claude models.
 * Extracted from types.ts for max-lines compliance.
 */
import type { ModelPricing, ModelPricingExtended } from "./types";
/**
 * Pricing table for known Claude models.
 */
export declare const MODEL_PRICING: Record<string, ModelPricing>;
export declare const MODEL_PRICING_EXTENDED: Record<string, ModelPricingExtended>;
/**
 * Calculate the USD cost for a single API interaction.
 */
export declare function calculateCostUsd(model: string, inputTokens: number, outputTokens: number, cacheCreationTokens: number, cacheReadTokens: number): number | undefined;
/**
 * Calculate the USD cost with separate 5-minute and 1-hour cache write rates.
 */
export declare function calculateCostUsdExtended(model: string, inputTokens: number, outputTokens: number, cacheCreation5mTokens: number, cacheCreation1hTokens: number, cacheReadTokens: number): number | undefined;
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