import { ChatOpenAI, OpenAIClient } from '@langchain/openai';
import { LangChainAssistant } from './langchain';
import { AudioToTextProps } from '../types';
export declare class OpenAIAssistant extends LangChainAssistant {
    protected aiModel: ChatOpenAI;
    protected openAIClient: OpenAIClient;
    protected static instance: OpenAIAssistant | null;
    private constructor();
    static getInstance(): Promise<OpenAIAssistant>;
    restart(): void;
    audioToText({ audioBlob, }: AudioToTextProps): Promise<string>;
}
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