/**
 * OpenRouter API client for querying multiple models.
 */
import { ModelConfig } from './models.js';
export interface ChatMessage {
    role: 'system' | 'user' | 'assistant';
    content: string;
}
export interface TokenUsage {
    input: number;
    output: number;
    total: number;
}
export interface ModelResponse {
    model: ModelConfig;
    content: string;
    tokensUsed: number;
    tokenUsage: TokenUsage;
    latencyMs: number;
    error?: string;
}
export declare function queryModel(model: ModelConfig, messages: ChatMessage[], options?: {
    temperature?: number;
    maxTokens?: number;
}): Promise<ModelResponse>;
export declare function queryModelsParallel(models: ModelConfig[], messages: ChatMessage[], options?: {
    temperature?: number;
    maxTokens?: number;
}): Promise<ModelResponse[]>;
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