import type { AgentBrain, AgentThought } from './agent-brain.js';
/**
 * OpenAI SDK-based implementation of AgentBrain.
 * Uses chat completions with structured output instructions.
 */
export declare class ChatGptBrain implements AgentBrain {
    private apiKey;
    private model;
    private baseUrl?;
    constructor(apiKey: string, model?: string, baseUrl?: string);
    think(prompt: string): Promise<AgentThought>;
    private extractJson;
}
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