/**
 * OpenAI LLM provider for Iranti.
 *
 * Implements the LLMProvider interface for OpenAI models. Automatically selects
 * between the Chat Completions API (legacy models) and the Responses API
 * (GPT-5+, o1, o3, o4) based on the requested model name.
 *
 * Configuration env vars:
 *   OPENAI_API_KEY   — required
 *   OPENAI_MODEL     — default model (default: gpt-5-mini)
 *   OPENAI_BASE_URL  — override endpoint for custom deployments (default: https://api.openai.com/v1)
 */
import { LLMProvider, LLMMessage, LLMResponse, CompleteOptions } from '../llm';
declare class OpenAIProvider implements LLMProvider {
    private apiKey;
    private model;
    private baseUrl;
    constructor();
    private shouldUseResponsesApi;
    private formatResponsesInput;
    private extractResponsesText;
    private parseErrorResponse;
    complete(messages: LLMMessage[], options?: CompleteOptions): Promise<LLMResponse>;
}
declare const _default: OpenAIProvider;
export default _default;
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