import type { CompletionRequest } from '../types/messages.js';
import type { NexusResponse } from '../types/response.js';
/** The part of a client that self-consistency needs. */
export interface ConsistencyClient {
    /** Runs one completion. */
    complete(request: CompletionRequest): Promise<NexusResponse>;
}
/** Options for `completeWithSelfConsistency()`. */
export interface SelfConsistencyOptions {
    /** Answers sampled. Defaults to 3. */
    samples?: number;
    /** Samples requested at once. Defaults to 2. */
    maxConcurrency?: number;
    /** Sampling temperature for each sample. Defaults to the request's, or 0.2. */
    temperature?: number;
    /** Top-p for each sample. Defaults to the request's, or 0.3. */
    topP?: number;
    /** Picks the answer. Defaults to the one most similar to the others. */
    judge?: (responses: NexusResponse[]) => Promise<NexusResponse> | NexusResponse;
}
/**
 * Samples several answers and returns the one they agree with most. Survives failed samples as long
 * as one succeeds.
 */
export declare function completeWithSelfConsistency(client: ConsistencyClient, request: CompletionRequest, options?: SelfConsistencyOptions): Promise<NexusResponse>;
/** The response whose text is most similar to the others'. */
export declare function selectMostConsistent(responses: NexusResponse[]): NexusResponse;
/** Jaccard similarity of two texts' terms, from 0 to 1. */
export declare function textSimilarity(a: string, b: string): number;