/** OpenRouter reasoning dialect: `reasoning.enabled` (boolean). */
export declare const openrouterReasoningTransform: (args: Record<string, unknown>) => Record<string, unknown>;
/**
 * Keeps a call-level `reasoning` option (including `'none'`) alive down to
 * {@link openrouterReasoningTransform}.
 */
export declare const openrouterReasoningMiddleware: import("ai").LanguageModelMiddleware;