/**
 * OpenAIProvider — supports OpenAI, OpenRouter, Kimi, GLM, Qwen, and any
 * OpenAI-compatible API endpoint.
 *
 * Usage modes:
 *   provider=openai          → api.openai.com/v1
 *   provider=openrouter      → openrouter.ai/api/v1
 *   provider=custom + baseUrl → any OpenAI-compatible endpoint
 *
 * Well-known base URLs for Chinese model providers:
 *   Kimi (Moonshot): https://api.moonshot.cn/v1
 *   GLM (Zhipu):     https://open.bigmodel.cn/api/paas/v4
 *   Qwen (Alibaba):  https://dashscope.aliyuncs.com/compatible-mode/v1
 *
 * This adapter translates our internal tool format to OpenAI function calling,
 * and maps responses back to LLMResponse.
 */
import type { LLMProvider, LLMRequest, LLMResponse, LLMStreamChunk } from "./LLMProvider.js";
export interface OpenAIProviderOptions {
    apiKey: string;
    baseUrl?: string;
    /** Extra headers (e.g. for OpenRouter: HTTP-Referer, X-Title) */
    extraHeaders?: Record<string, string>;
}
export declare class OpenAIProvider implements LLMProvider {
    private apiKey;
    private baseUrl;
    private extraHeaders;
    constructor(options: OpenAIProviderOptions);
    private geminiSchemaToJsonSchema;
    private toOpenAITools;
    private toOpenAIMessages;
    generate(request: LLMRequest): Promise<LLMResponse>;
    generateStream(request: LLMRequest, onChunk: (chunk: LLMStreamChunk) => void): Promise<LLMResponse>;
}
/**
 * Factory: creates an OpenAIProvider pre-configured for the given sub-provider.
 */
export declare function createOpenAICompatibleProvider(subProvider: "openai" | "openrouter" | "kimi" | "glm" | "qwen" | "custom", apiKey: string, customBaseUrl?: string): OpenAIProvider;
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