/**
 * Per-model price table + a pure cost function (Open/Closed).
 *
 * Adding a model or provider is a TABLE edit here — never a change to the meter
 * or the call sites. Prices are list rates; keep them in one place so a rate
 * change is a one-line diff.
 *
 * Units:
 *   - inputPerMTok / outputPerMTok : USD per 1,000,000 tokens
 *   - audioPerMinute               : USD per minute of audio (Whisper family)
 */
export interface ModelPrice {
    /** USD per 1M prompt/input tokens. */
    inputPerMTok?: number;
    /** USD per 1M completion/output tokens. */
    outputPerMTok?: number;
    /** USD per minute of transcribed audio. */
    audioPerMinute?: number;
}
/**
 * List prices as of 2026-07. Sources:
 *   - OpenAI gpt-4o / gpt-4o-mini / text-embedding-3-small / whisper-1: openai.com/pricing
 *   - Groq whisper-large-v3: $0.111/hr (groq.com/pricing)
 */
export declare const MODEL_PRICES: Record<string, ModelPrice>;
/** Minimal shape needed to price a call — a subset of {@link UsageEvent}. */
export interface Priceable {
    model: string;
    promptTokens?: number;
    completionTokens?: number;
    audioSeconds?: number;
}
/**
 * Pure cost in USD for one usage event. Unknown models (absent from the table)
 * cost 0 — pricing is best-effort telemetry, never a hard dependency. Missing
 * token/audio fields simply contribute nothing.
 */
export declare function costOf(event: Priceable): number;
//# sourceMappingURL=pricing.d.ts.map