import { AgentOutputSchema } from '../agent-outputs';
import { Handoff } from '../handoffs';
import { ModelResponse, TResponseInputItem, TResponseStreamEvent } from '../items';
import { Tool } from '../tools';
import { ModelSettings } from './model-settings';
/**
 * Controls how model tracing is configured.
 */
export declare enum ModelTracing {
    /**
     * Tracing is disabled entirely.
     */
    DISABLED = 0,
    /**
     * Tracing is enabled, and all data is included.
     */
    ENABLED = 1,
    /**
     * Tracing is enabled, but inputs/outputs are not included.
     */
    ENABLED_WITHOUT_DATA = 2
}
/**
 * Abstract class for ModelTracing utilities.
 */
export declare abstract class ModelTracingUtils {
    /**
     * Check if tracing is disabled
     */
    static isDisabled(tracing: ModelTracing): boolean;
    /**
     * Check if data should be included in traces
     */
    static includeData(tracing: ModelTracing): boolean;
}
/**
 * The base interface for calling an LLM.
 */
export declare abstract class Model {
    /**
     * Get a response from the model.
     *
     * @param systemInstructions - The system instructions to use
     * @param input - The input items to the model, in OpenAI Responses format
     * @param modelSettings - The model settings to use
     * @param tools - The tools available to the model
     * @param outputSchema - The output schema to use
     * @param handoffs - The handoffs available to the model
     * @param tracing - Tracing configuration
     * @returns The full model response
     */
    abstract getResponse(systemInstructions: string | null, input: string | TResponseInputItem[], modelSettings: ModelSettings, tools: Tool[], outputSchema: AgentOutputSchema | null, handoffs: Handoff<any>[], tracing: ModelTracing, previousResponseId?: string): Promise<ModelResponse>;
    /**
     * Stream a response from the model.
     *
     * @param systemInstructions - The system instructions to use
     * @param input - The input items to the model, in OpenAI Responses format
     * @param modelSettings - The model settings to use
     * @param tools - The tools available to the model
     * @param outputSchema - The output schema to use
     * @param handoffs - The handoffs available to the model
     * @param tracing - Tracing configuration
     * @returns An async iterator of response stream events, in OpenAI Responses format
     */
    abstract streamResponse(systemInstructions: string | null, input: string | TResponseInputItem[], modelSettings: ModelSettings, tools: Tool[], outputSchema: AgentOutputSchema | null, handoffs: Handoff<any>[], tracing: ModelTracing, previousResponseId?: string): AsyncIterableIterator<TResponseStreamEvent>;
}
/**
 * The base interface for a model provider.
 *
 * Model provider is responsible for looking up Models by name.
 */
export declare abstract class ModelProvider {
    /**
     * Get a model by name.
     *
     * @param modelName - The name of the model to get
     * @returns The model instance
     */
    abstract getModel(modelName: string | null): Model;
}