/**
 * LLM Configuration
 *
 * Provider configurations, model definitions, and environment variable handling.
 */
/**
 * Supported LLM providers
 */
export type LLMProvider = 'openai' | 'anthropic' | 'azure' | 'custom';
/**
 * Model capabilities
 */
export interface ModelCapabilities {
    /** Supports function/tool calling */
    functionCalling: boolean;
    /** Supports vision/image inputs */
    vision: boolean;
    /** Supports streaming responses */
    streaming: boolean;
    /** Supports JSON mode */
    jsonMode: boolean;
    /** Supports system messages */
    systemMessages: boolean;
}
/**
 * Model pricing information (per 1M tokens)
 */
export interface ModelPricing {
    /** Cost per 1M input tokens in USD */
    inputTokens: number;
    /** Cost per 1M output tokens in USD */
    outputTokens: number;
}
/**
 * Model configuration
 */
export interface ModelConfig {
    /** Model identifier */
    id: string;
    /** Display name */
    name: string;
    /** Provider */
    provider: LLMProvider;
    /** Maximum context window size */
    contextWindow: number;
    /** Maximum output tokens */
    maxOutputTokens: number;
    /** Model capabilities */
    capabilities: ModelCapabilities;
    /** Pricing information */
    pricing?: ModelPricing;
    /** Deprecation date (if applicable) */
    deprecatedAt?: Date;
}
/**
 * Provider-specific configuration
 */
export interface LLMProviderConfig {
    /** Provider type */
    provider: LLMProvider;
    /** API key for authentication */
    apiKey: string;
    /** Base URL for API requests (optional) */
    baseUrl?: string;
    /** Organization ID (optional, for OpenAI) */
    organization?: string;
    /** Request timeout in milliseconds */
    timeout?: number;
    /** Maximum retries for failed requests */
    maxRetries?: number;
    /** Custom headers for requests */
    headers?: Record<string, string>;
    /** Default model to use */
    defaultModel?: string;
}
/**
 * Default OpenAI model configurations
 */
export declare const OPENAI_MODELS: Record<string, ModelConfig>;
/**
 * Default Anthropic model configurations
 */
export declare const ANTHROPIC_MODELS: Record<string, ModelConfig>;
/**
 * Combined model configurations
 */
export declare const MODEL_CONFIGS: Record<string, ModelConfig>;
/**
 * Environment variable names for API keys
 */
export declare const ENV_VARS: {
    readonly OPENAI_API_KEY: "OPENAI_API_KEY";
    readonly OPENAI_ORG_ID: "OPENAI_ORG_ID";
    readonly ANTHROPIC_API_KEY: "ANTHROPIC_API_KEY";
    readonly AZURE_OPENAI_API_KEY: "AZURE_OPENAI_API_KEY";
    readonly AZURE_OPENAI_ENDPOINT: "AZURE_OPENAI_ENDPOINT";
};
/**
 * Get API key from environment variables
 *
 * @param provider - Provider to get API key for
 * @returns API key or undefined if not found
 */
export declare function getApiKeyFromEnv(provider: LLMProvider): string | undefined;
/**
 * Get organization ID from environment variables (OpenAI only)
 *
 * @returns Organization ID or undefined if not found
 */
export declare function getOrgIdFromEnv(): string | undefined;
/**
 * Get base URL from environment variables
 *
 * @param provider - Provider to get base URL for
 * @returns Base URL or undefined if not found
 */
export declare function getBaseUrlFromEnv(provider: LLMProvider): string | undefined;
/**
 * Auto-detect provider from model name
 *
 * @param modelId - Model identifier
 * @returns Detected provider or 'custom' if unknown
 */
export declare function detectProvider(modelId: string): LLMProvider;
/**
 * Get model configuration by ID
 *
 * @param modelId - Model identifier
 * @returns Model configuration or undefined if not found
 */
export declare function getModelConfig(modelId: string): ModelConfig | undefined;
/**
 * Validate model configuration
 *
 * @param modelId - Model identifier
 * @throws Error if model is not supported or deprecated
 */
export declare function validateModel(modelId: string): void;
/**
 * Get default configuration for a provider
 *
 * @param provider - Provider type
 * @returns Default provider configuration
 */
export declare function getDefaultProviderConfig(provider: LLMProvider): Partial<LLMProviderConfig>;
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