/**
 * Speech & Transcription - AI SDK v6 Compatible
 *
 * Provides speech generation and transcription utilities.
 */
export interface GenerateSpeechOptions {
    /** Model to use (e.g., 'openai/tts-1', 'elevenlabs/eleven_multilingual_v2') */
    model: string;
    /** Text to convert to speech */
    text: string;
    /** Voice to use */
    voice?: string;
    /** Speed multiplier (0.25 to 4.0) */
    speed?: number;
    /** Output format */
    format?: 'mp3' | 'opus' | 'aac' | 'flac' | 'wav' | 'pcm';
    /** Additional provider options */
    providerOptions?: Record<string, unknown>;
}
export interface GenerateSpeechResult {
    /** Audio data as Uint8Array */
    audio: Uint8Array;
    /** Audio format */
    format: string;
    /** Duration in seconds (if available) */
    durationSeconds?: number;
    /** Provider metadata */
    providerMetadata?: Record<string, unknown>;
}
export interface TranscribeOptions {
    /** Model to use (e.g., 'openai/whisper-1') */
    model: string;
    /** Audio data - can be Uint8Array, ArrayBuffer, Buffer, base64 string, or URL */
    audio: Uint8Array | ArrayBuffer | Buffer | string;
    /** Language hint (ISO 639-1 code) */
    language?: string;
    /** Prompt to guide transcription */
    prompt?: string;
    /** Temperature for sampling */
    temperature?: number;
    /** Output format */
    format?: 'json' | 'text' | 'srt' | 'verbose_json' | 'vtt';
    /** Additional provider options */
    providerOptions?: Record<string, unknown>;
}
export interface TranscribeResult {
    /** Transcribed text */
    text: string;
    /** Detected language */
    language?: string;
    /** Duration in seconds */
    durationSeconds?: number;
    /** Segments with timestamps */
    segments?: TranscriptionSegment[];
    /** Provider metadata */
    providerMetadata?: Record<string, unknown>;
}
export interface TranscriptionSegment {
    /** Segment ID */
    id: number;
    /** Start time in seconds */
    start: number;
    /** End time in seconds */
    end: number;
    /** Segment text */
    text: string;
    /** Confidence score */
    confidence?: number;
}
/**
 * Generate speech from text.
 *
 * @example
 * ```typescript
 * const result = await generateSpeech({
 *   model: 'openai/tts-1',
 *   text: 'Hello, world!',
 *   voice: 'alloy'
 * });
 *
 * // Save to file
 * await fs.writeFile('speech.mp3', result.audio);
 * ```
 */
export declare function generateSpeech(options: GenerateSpeechOptions): Promise<GenerateSpeechResult>;
/**
 * Transcribe audio to text.
 *
 * @example
 * ```typescript
 * const result = await transcribe({
 *   model: 'openai/whisper-1',
 *   audio: await fs.readFile('audio.mp3')
 * });
 *
 * console.log(result.text);
 * ```
 */
export declare function transcribe(options: TranscribeOptions): Promise<TranscribeResult>;
/**
 * Available speech models.
 */
export declare const SPEECH_MODELS: {
    openai: {
        'tts-1': {
            description: string;
            voices: string[];
        };
        'tts-1-hd': {
            description: string;
            voices: string[];
        };
    };
    elevenlabs: {
        eleven_multilingual_v2: {
            description: string;
            voices: never[];
        };
        eleven_turbo_v2: {
            description: string;
            voices: never[];
        };
    };
};
/**
 * Available transcription models.
 */
export declare const TRANSCRIPTION_MODELS: {
    openai: {
        'whisper-1': {
            description: string;
            languages: string;
        };
    };
};