Carrefour said its Polish AI assistant Karol handled 45% of all customer-service enquiries on average through February 2026. It independently resolved 84% of chats and 43% of calls, rising to 89% and 53% respectively during the busiest month. Enquiries reaching human advisers fell 24% YoY between April 2025 and February 2026. Carrefour plans to add more personalised order support and extend Karol to its mobile app. (Carrefour Polska)