export interface ModelPrice {
    inputPerMTok: number;
    outputPerMTok: number;
}
export interface TokenUsage {
    inputTokens: number;
    outputTokens: number;
}
export interface CostEstimate {
    amountUsd: number;
    knownModel: boolean;
    inputTokens: number;
    outputTokens: number;
    calls: number;
}
export declare const PRICE_TABLE: Record<string, ModelPrice>;
export declare const PRICE_TABLE_VERIFIED_AT = "2026-05-05";
export declare const PRICE_TABLE_STALE_AFTER_DAYS = 90;
export declare const DARIO_DEFAULT_BASE_URL = "http://localhost:3456";
export declare function priceFor(model: string, env?: Record<string, string | undefined>): ModelPrice | undefined;
export declare function estimateCost(usage: TokenUsage & {
    calls: number;
}, model: string, env?: Record<string, string | undefined>): CostEstimate;
/**
 * Multi-model cost estimate (v0.10.0).
 *
 * Sums `estimateCost` across a per-model usage map — used when the run
 * spread requests across models (per-stage model overrides). The aggregate
 * `amountUsd` is the sum of priced costs. `knownModel` is true only when
 * **every** model with non-zero usage is priced (known table entry or
 * env-var override). Unknown models contribute $0 (same as the single-
 * model case) and flip `knownModel` to false; the CLI renders `$?` in
 * that situation rather than understating the bill.
 *
 * `byModel` retains the per-model breakdown so the CLI can render a
 * multi-line cost summary when more than one model was used.
 */
export interface MultiModelCostEstimate extends CostEstimate {
    byModel: Array<{
        model: string;
        estimate: CostEstimate;
    }>;
}
export declare function estimateCostMultiModel(usageByModel: Record<string, TokenUsage & {
    calls: number;
}>, env?: Record<string, string | undefined>): MultiModelCostEstimate;
export declare function formatCostLine(estimate: CostEstimate, model: string): string;
export declare function looksLikeDario(baseUrl: string): boolean;
export declare function formatUsd(amount: number): string;
export declare function formatTokens(n: number): string;
export declare function daysAgo(isoDate: string, now?: number): number;
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