import type { ProviderUsage } from "../providers/ProviderTypes.js";
export type PricingSpec = {
    inputPer1K?: number;
    outputPer1K?: number;
    per1K?: number;
};
export type PricingOverrides = Record<string, PricingSpec>;
export interface PricingResolution {
    pricing?: PricingSpec;
    source?: string;
}
export interface CostEstimate {
    charCount: number;
    estimatedInputTokens: number;
    estimatedOutputTokens: number;
    estimatedTotalTokens: number;
    estimatedCost?: number;
    pricingSource?: string;
}
export type UsageCostSource = "actual_usage" | "unknown";
export type UsageCostReasonCode = "usage_missing" | "pricing_unavailable";
export interface UsageCostTelemetry {
    costUsd?: number;
    source: UsageCostSource;
    reasonCode?: UsageCostReasonCode;
}
export declare const resolvePricing: (overrides: PricingOverrides, provider: string, model: string) => PricingResolution;
export declare const estimateCostFromChars: (charCount: number, charPerToken: number, pricing?: PricingSpec, pricingSource?: string, outputTokenRatio?: number) => CostEstimate;
export declare const estimateCostFromUsage: (usage: ProviderUsage | undefined, pricing?: PricingSpec) => number | undefined;
export declare const estimateUsageCostTelemetry: (usage: ProviderUsage | undefined, pricing?: PricingSpec) => UsageCostTelemetry;
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