import type { BatchJobRef, BatchJobState, BatchOutputItem, BatchProvider, BatchProviderCallContext, BatchProviderInfo, BatchSubmitRequest } from '../types/batch.js';
/** Options for the OpenAI batch provider. */
export interface OpenAIBatchProviderOptions {
    /** OpenAI API key. */
    apiKey: string;
    /** API base URL. Defaults to `https://api.openai.com/v1`. */
    baseUrl?: string;
    /** Sent as the `OpenAI-Organization` header. */
    organization?: string;
    /** Headers added to every request. */
    headers?: Record<string, string>;
    /** Replaces the global `fetch`. */
    fetch?: typeof fetch;
    /** Endpoint every item targets. Defaults to chat completions. */
    endpoint?: '/v1/chat/completions' | '/v1/embeddings' | (string & {});
}
/**
 * OpenAI's Batch API: half price, 24-hour window.
 *
 * The wire protocol is a JSONL upload, a batch pointing at it, then a JSONL download — three
 * different content types across four endpoints, which is why this adapter is larger than a
 * synchronous one.
 */
export declare class OpenAIBatchProvider implements BatchProvider {
    private readonly options;
    /** Always `openai`, with its batch limits. */
    readonly info: BatchProviderInfo;
    constructor(options: OpenAIBatchProviderOptions);
    /** Uploads the items as JSONL and creates a batch over them. */
    submit(request: BatchSubmitRequest, context: BatchProviderCallContext): Promise<BatchJobRef>;
    /** Reads a batch's status and counts. */
    poll(ref: BatchJobRef, context: BatchProviderCallContext): Promise<BatchJobState>;
    /** Downloads a finished batch's results. Empty until the output file exists. */
    results(ref: BatchJobRef, context: BatchProviderCallContext): Promise<BatchOutputItem[]>;
    /** Cancels a batch. Items already processed keep their results. */
    cancel(ref: BatchJobRef, context: BatchProviderCallContext): Promise<BatchJobState>;
    private toState;
    private toOutputItem;
    private request;
    private requestText;
    private send;
}