/**
 * Google Gemini ASR configuration parameters.
 */
export interface GeminiAsrParams {
    /** The Google Gemini API key used to authenticate requests. */
    api_key: string;
    /** The Gemini transcription model identifier. */
    model: string;
    /** The audio sample rate in Hz. */
    sample_rate?: number | null;
    /** The language code for speech recognition. This takes precedence over the top-level `asr.language` value. */
    language?: string;
    /** Candidate language codes for transcription. When non-empty, these take precedence over language. */
    language_hints?: string[];
    /** Words and phrases used to bias transcription. A non-empty custom vocabulary cannot be combined with word_timestamp. */
    custom_vocabulary?: string[];
    /** Transcription output mode. SMART removes disfluencies and applies formatting; VERBATIM preserves literal speech. When omitted, the service defaults to VERBATIM. SMART cannot be combined with word_timestamp or diarization. */
    mode?: GeminiAsrParams.Mode;
    /** Whether to include word-level timestamps in the transcription results. Cannot be enabled when mode is SMART or custom_vocabulary is non-empty. */
    word_timestamp?: boolean;
    /** Whether to include speaker labels in the transcription results. Cannot be enabled when mode is SMART. */
    diarization?: boolean;
    /** Accepts any additional properties */
    [key: string]: any;
}
export declare namespace GeminiAsrParams {
    /** Transcription output mode. SMART removes disfluencies and applies formatting; VERBATIM preserves literal speech. When omitted, the service defaults to VERBATIM. SMART cannot be combined with word_timestamp or diarization. */
    const Mode: {
        readonly Smart: "SMART";
        readonly Verbatim: "VERBATIM";
    };
    type Mode = (typeof Mode)[keyof typeof Mode];
}