/**
 * OpenAI GPT-5.2 Provider
 * 使用 Responses API 并支持可配置的 reasoning effort
 */
import { BaseLLMProvider } from "./base-provider.js";
import type { ChatMessage, LLMRequestConfig, LLMResponse, LLMProviderType } from "./types.js";
export declare class OpenAIProvider extends BaseLLMProvider {
    readonly name: LLMProviderType;
    private apiKey;
    constructor();
    isConfigured(): boolean;
    protected doChat(messages: ChatMessage[], config?: LLMRequestConfig): Promise<LLMResponse>;
    private delay;
    /** 从 Responses API 返回中提取文本（跳过 reasoning 部分） */
    private extractOutputText;
}
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