/**
 * This file was auto-generated by Fern from our API Definition.
 */
import * as environments from "../../../../environments";
import * as core from "../../../../core";
import * as Vectara from "../../../index";
export declare namespace Llms {
    interface Options {
        environment?: core.Supplier<environments.VectaraEnvironment | environments.VectaraEnvironmentUrls>;
        token?: core.Supplier<core.BearerToken | undefined>;
        /** Override the x-api-key header */
        apiKey?: core.Supplier<string | undefined>;
        fetcher?: core.FetchFunction;
    }
    interface RequestOptions {
        /** The maximum time to wait for a response in seconds. */
        timeoutInSeconds?: number;
        /** The number of times to retry the request. Defaults to 2. */
        maxRetries?: number;
        /** A hook to abort the request. */
        abortSignal?: AbortSignal;
        /** Override the x-api-key header */
        apiKey?: string | undefined;
        /** Additional headers to include in the request. */
        headers?: Record<string, string>;
    }
}
export declare class Llms {
    protected readonly _options: Llms.Options;
    constructor(_options?: Llms.Options);
    /**
     * List LLMs that can be used with query and chat endpoints. The LLM is not directly specified in a query,
     * but instead a `generation_preset_name` is used. The `generation_preset_name` property in generation parameters
     * can be found as the `name` property on the Generations Presets retrieved from `/v2/generation_presets`.
     *
     * @param {Vectara.LlmsListRequest} request
     * @param {Llms.RequestOptions} requestOptions - Request-specific configuration.
     *
     * @throws {@link Vectara.ForbiddenError}
     *
     * @example
     *     await client.llms.list()
     */
    list(request?: Vectara.LlmsListRequest, requestOptions?: Llms.RequestOptions): Promise<core.Page<Vectara.Llm>>;
    protected _getAuthorizationHeader(): Promise<string | undefined>;
}