import { OpenAI } from 'openai';
import { type LLMProviders, type LLMCreateSpeechOptions, type LLMCreateSpeechResult, type LLMInstanceOptions, type LLMModel } from '../../LLMService.typedefs';
import { type LLMLoggerInterface } from '../../utilities/logger';
import { type LLMReporterInterface } from '../../utilities/reporter';
import { LLMTextToSpeechService } from '../../services';
type OpenAICompatibleTTSProvider = LLMProviders.OpenAI | LLMProviders.LLMAPI;
interface SpeechUsage {
    inputTextTokens: number;
    outputAudioTokens: number;
}
export declare abstract class OpenAICompatibleTextToSpeechService<Provider extends OpenAICompatibleTTSProvider, Reporter extends LLMReporterInterface<any> | undefined> extends LLMTextToSpeechService<Provider, Reporter> {
    constructor(provider: Provider, logger: LLMLoggerInterface | undefined, reporter: Reporter, options?: LLMInstanceOptions[Provider]);
    get instance(): OpenAI;
    protected getDefaultVoice(_modelName: string): string;
    protected getRequestOptions(abortSignal?: AbortSignal): {
        signal?: AbortSignal;
        headers?: Record<string, string>;
    };
    protected abstract extractUsage(audioBuffer: Buffer, text: string, model: LLMModel<Provider>): Promise<SpeechUsage> | SpeechUsage;
    createSpeech(options: LLMCreateSpeechOptions<typeof this.provider, Reporter>): Promise<LLMCreateSpeechResult>;
}
export {};