/** Options for {@link Realtime.gemini} (Gemini Live realtime model). Extra keys are passed through. */
export type RealtimeGeminiOptions = {
    /** Provider identifier; normally left unset. */
    provider?: string | null;
    /** Model name; alias for {@link RealtimeGeminiOptions.modelId}. */
    model?: string | null;
    /** Model name. */
    modelId?: string | null;
    /** Voice name for synthesized audio. */
    voice?: string | null;
    /** Language code (BCP-47). */
    languageCode?: string | null;
    /** Sampling temperature; higher values produce more varied output. */
    temperature?: number | null;
    /** Nucleus-sampling probability mass. */
    topP?: number | null;
    /** Top-K sampling cutoff. */
    topK?: number | null;
    /** Number of candidate responses to generate. */
    candidateCount?: number | null;
    /** Maximum number of tokens to generate. */
    maxOutputTokens?: number | null;
    /** Presence penalty applied during generation. */
    presencePenalty?: number | null;
    /** Frequency penalty applied during generation. */
    frequencyPenalty?: number | null;
    /** Response modalities to request (e.g. `["AUDIO"]`). */
    responseModalities?: string[] | null;
    /** Override the inference endpoint base URL. */
    baseUrl?: string | null;
    /** Additional provider-specific options. */
    [key: string]: any;
};
/** Factory for realtime (speech-to-speech) model components. */
export declare class Realtime {
    /**
     * Build a Gemini Live realtime component. Only the options you set are forwarded
     * to the provider; unset options use the provider's own defaults.
     *
     * @throws {NotImplementedError} if the Gemini realtime plugin is not available in this build.
     */
    static gemini(opts?: RealtimeGeminiOptions): Promise<any>;
}