/**
 * OpenRouter Live Model API
 *
 * Fetches the live model list from OpenRouter's API with pricing,
 * context windows, and capabilities. Cached for 1 hour.
 */
export type OpenRouterModel = {
    id: string;
    name: string;
    description?: string;
    contextLength: number;
    pricing: {
        prompt: number;
        completion: number;
    };
    topProvider?: {
        maxCompletionTokens?: number;
    };
};
export type OpenRouterModelInfo = {
    id: string;
    name: string;
    contextLength: number;
    promptPricePerMillion: number;
    completionPricePerMillion: number;
    maxCompletionTokens?: number;
};
/**
 * Fetch live model list from OpenRouter API.
 * Results are cached for 1 hour.
 *
 * Does NOT require an API key — the models endpoint is public.
 */
export declare function fetchOpenRouterModels(): Promise<OpenRouterModelInfo[]>;
/**
 * Clear the model cache (useful for testing).
 */
export declare function clearModelCache(): void;
/**
 * Search models by name or ID.
 */
export declare function filterModels(models: OpenRouterModelInfo[], query: string): OpenRouterModelInfo[];
/**
 * Format a model for display in a selector.
 */
export declare function formatModelChoice(model: OpenRouterModelInfo): string;
/**
 * Get pricing for a specific model from the live API.
 * Falls back to null if the model is not found.
 */
export declare function getModelPricing(modelId: string): Promise<{
    inputPricePerMillion: number;
    outputPricePerMillion: number;
} | null>;
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