import type { SpeechToTextResult } from './types.js';
/**
 * Fluent builder for speech-to-text transcription.
 *
 * @example
 * const result = await Transcription.fromBytes(bytes).language('en').generate()
 *
 * For Node-only path-based loading, see `@gemstack/ai-sdk/node`:
 *   const t = await transcribeFromPath('./audio.mp3')
 *
 * @example  Failover across providers
 * const result = await Transcription.fromBytes(bytes)
 *   .model('openai/whisper-1')
 *   .failover('google/gemini-2.0-flash-exp')
 *   .generate()
 */
export declare class Transcription {
    private readonly _audio;
    private _model?;
    private _language?;
    private _prompt?;
    private _failover;
    private constructor();
    /** Create a Transcription from raw audio bytes */
    static fromBytes(bytes: Uint8Array): Transcription;
    /** @deprecated Use fromBytes(). Buffer extends Uint8Array, so this is a thin alias. */
    static fromBuffer(buffer: Uint8Array): Transcription;
    /** Set the STT model (e.g. 'openai/whisper-1') */
    model(m: string): this;
    /**
     * Provider/model strings to try if the primary fails.
     * Tried in order; the first to succeed wins.
     */
    failover(...models: string[]): this;
    /** Set the language hint (ISO-639-1, e.g. 'en', 'es', 'fr') */
    language(l: string): this;
    /** Set an optional prompt to guide transcription style */
    prompt(p: string): this;
    /** Run the transcription */
    generate(): Promise<SpeechToTextResult>;
}
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