import type { StreamingSttOpenRequest, StreamingSttSession } from '../media-understanding/types.js';
import type { SpeechSynthesisStreamResult } from './tts/speech-provider-types.js';
export declare function openPlatformStt(request: StreamingSttOpenRequest): Promise<StreamingSttSession>;
export declare function openPlatformTts(request: {
    baseUrl: string;
    apiKey: string;
    voice: string;
    text: string;
    instructions?: string;
    signal: AbortSignal;
    timeoutMs: number;
}): Promise<SpeechSynthesisStreamResult>;