import { Chunk, Reranker } from "../../index.js";
export declare class CohereReranker implements Reranker {
    private readonly params;
    name: string;
    static defaultOptions: {
        apiBase: string;
        model: string;
    };
    constructor(params: {
        apiBase?: string;
        apiKey: string;
        model?: string;
    });
    rerank(query: string, chunks: Chunk[]): Promise<number[]>;
}
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