import { TTSProvider, TTSProviderConfig, TTSOptions, TTSResult } from '../../interfaces';
/**
 * OpenAI TTS Provider Implementation
 */
export declare class OpenAITTSProvider implements TTSProvider {
    private config;
    private openai;
    constructor(config: TTSProviderConfig);
    /**
     * Convert text to speech
     * @param text - Text to convert to speech
     * @param outputPath - Output path for the audio file
     * @param options - Additional options
     * @returns Duration of the generated audio in seconds and cost
     */
    textToSpeech(text: string, outputPath: string, options?: TTSOptions): Promise<TTSResult>;
}