import type { CallbackManagerForLLMRun } from "@langchain/core/callbacks/manager";
import { BaseChatModel, type BaseChatModelCallOptions, type BaseChatModelParams } from "@langchain/core/language_models/chat_models";
import { type BaseMessage } from "@langchain/core/messages";
import { ChatGenerationChunk, type ChatResult } from "@langchain/core/outputs";
export declare const DEFAULT_XAI_BASE_URL = "https://api.x.ai/v1";
type XAIImageResponseFormat = "url" | "b64_json";
type XAIImageModelInput = BaseChatModelParams & {
    model: string;
    apiKey?: string;
    baseURL?: string;
    size?: string;
    responseFormat?: XAIImageResponseFormat;
};
export declare function isNativeXAIImageModel(modelName: string): boolean;
export declare class NativeXAIImageModel extends BaseChatModel<BaseChatModelCallOptions> {
    model: string;
    apiKey?: string;
    baseURL: string;
    size?: string;
    responseFormat: XAIImageResponseFormat;
    constructor(fields: XAIImageModelInput);
    bindTools(_tools: unknown[], _options?: Record<string, unknown>): NativeXAIImageModel;
    _llmType(): string;
    getLsParams(): {
        ls_provider: string;
        ls_model_name: string;
        ls_model_type: "chat";
    };
    invocationParams(): Record<string, unknown>;
    _generate(messages: BaseMessage[], options: this["ParsedCallOptions"], _runManager?: CallbackManagerForLLMRun): Promise<ChatResult>;
    _streamResponseChunks(messages: BaseMessage[], options: this["ParsedCallOptions"], runManager?: CallbackManagerForLLMRun): AsyncGenerator<ChatGenerationChunk>;
}
export {};