/**
 * Error classes for model-orch-sdk
 * Comprehensive error hierarchy with proper status codes
 */
export declare class ModelOrchError extends Error {
    readonly status?: number;
    readonly code?: string;
    readonly type: string;
    constructor(message: string, type: string, status?: number, code?: string);
    toJSON(): Record<string, unknown>;
}
export declare class AuthenticationError extends ModelOrchError {
    constructor(message: string, status?: number);
}
export declare class RateLimitError extends ModelOrchError {
    readonly retry_after?: number;
    constructor(message: string, retry_after?: number);
}
export declare class InvalidRequestError extends ModelOrchError {
    readonly param?: string;
    constructor(message: string, param?: string);
}
export declare class APIConnectionError extends ModelOrchError {
    constructor(message: string);
}
export declare class TimeoutError extends ModelOrchError {
    constructor(message: string);
}
export declare class ModelNotFoundError extends ModelOrchError {
    constructor(modelId: string);
}
export declare class RoutingError extends ModelOrchError {
    constructor(message: string, code?: string);
}
export declare function isRetryableError(error: unknown): boolean;
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