import type { CatalogModel } from './model-catalog.js';
interface CatalogCacheFile {
    version: typeof CATALOG_CACHE_VERSION;
    fetchedAt: number;
    ttlMs: number;
    models: CatalogModel[];
}
/**
 * Version 2: `pricing` became nullable, a model whose catalog entry carries
 * no cost is honestly unpriced instead of coerced to $0. Version-1 caches
 * (which baked in the $0 coercion) are discarded and refetched.
 *
 * Version 3: `reasoningOptions` carries the feed's per-model `reasoning_options`
 * array, which decides what reasoning levels each model really accepts.
 * Version-2 caches predate the field, so they are discarded and refetched
 * rather than left to fall through to the curated family table for a day.
 *
 * Version 4: `inputModalities` carries the feed's per-model `modalities.input`
 * list, which decides `multimodal` per model instead of by vendor. Version-3
 * caches predate the field; left in place they would report every model as
 * text-only for a day, so they are discarded and refetched.
 */
declare const CATALOG_CACHE_VERSION = 4;
export declare function getCatalogCachePath(cacheDir: string): string;
export declare function getCatalogTmpPath(cacheDir: string): string;
declare function loadCatalogCache(cachePath: string): CatalogCacheFile | null;
declare function saveCatalogCache(models: CatalogModel[], cachePath: string, tmpPath: string): void;
declare function isCatalogCacheStale(cache: CatalogCacheFile): boolean;
/**
 * Fetch models.dev/api.json and parse into CatalogModel[].
 * Uses a 30-second timeout.
 */
export declare function fetchCatalog(): Promise<CatalogModel[]>;
export { loadCatalogCache, saveCatalogCache, isCatalogCacheStale, };
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