import { BaseTTS } from "../vendors/base.mjs";
/** Gemini 3.8 Flash TTS preview model. */
export declare const GeminiTTSModels: {
    readonly Flash38: "gemini-3.8-flash-tts";
};
export type GeminiTTSModel = (typeof GeminiTTSModels)[keyof typeof GeminiTTSModels] | (string & {});
export interface GeminiTTSOptions {
    apiKey: string;
    /** Sent verbatim; defaults to Gemini 3.8 Flash TTS. */
    model?: GeminiTTSModel;
    /** Defaults to Puck. */
    voice?: string;
    /** Natural-language speaking instructions. Omitted unless supplied. */
    style?: string;
}
/** Preview wire shape, kept separate from the generated production schema. */
export interface GeminiTTSConfig {
    vendor: "gemini";
    params: {
        api_key: string;
        model: string;
        voice: string;
        style?: string;
    };
}
/** Preview-only TTS. AgentSession selects the gemini-live gate automatically. */
export declare class GeminiTTS extends BaseTTS {
    private readonly options;
    constructor(options: GeminiTTSOptions);
    toConfig(): GeminiTTSConfig;
}