import type { UsageRecordedPacket } from "./packets.js";
export interface SttPrice {
    readonly usdPerAudioSecond: number;
}
export interface LlmPrice {
    readonly usdPer1MInputTokens: number;
    readonly usdPer1MOutputTokens: number;
    readonly usdPer1MCachedInputTokens?: number;
}
export interface TtsPrice {
    readonly usdPer1MCharacters: number;
}
export interface PriceCatalog {
    readonly source: string;
    readonly version: string;
    /** Keys: `provider/model` (e.g. `deepgram/nova-3`). */
    readonly stt: Readonly<Record<string, SttPrice>>;
    readonly llm: Readonly<Record<string, LlmPrice>>;
    readonly tts: Readonly<Record<string, TtsPrice>>;
}
export type CostResult = {
    readonly usd: number;
    readonly unpriced?: undefined;
} | {
    readonly usd: null;
    readonly unpriced: true;
};
/**
 * Public list prices stamped into DEFAULT_PRICE_CATALOG.source.
 * STT $/audio-second from $/min ÷ 60. TTS is $/1M characters. LLM is $/1M tokens.
 */
export declare const DEFAULT_PRICE_CATALOG: PriceCatalog;
export declare function costOf(usage: UsageRecordedPacket, catalog: PriceCatalog): CostResult;
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