import type { Usage } from '../../../../src/execution/Usage';
import type { ModelPricing } from './modelPricing';
/**
 * Options for estimating the usage of one harness run.
 */
export type EstimateUsageFromTextLengthOptions = {
    /**
     * Human-readable harness name used when the estimation itself fails.
     */
    readonly harnessLabel: string;
    /**
     * The prompt that was sent to the harness.
     */
    readonly prompt: string;
    /**
     * The output which the harness has printed.
     */
    readonly output: string;
    /**
     * Reads the pricing of the model which was used for this run.
     *
     * It is resolved lazily so that a broken pricing table degrades to an uncertain estimate
     * instead of failing the coding round, because a price estimate must never block coding work.
     */
    readonly resolvePricing: () => ModelPricing;
};
/**
 * Estimates the usage of one harness run from the length of its prompt and its output.
 *
 * Harnesses which do not report their own token counts are billed per token anyway, so the
 * character counts are the only signal available for a price estimate.
 */
export declare function estimateUsageFromTextLength(options: EstimateUsageFromTextLengthOptions): Usage;