Most platforms promise 80 to 90 percent automation, but production data shows 40 to 60 percent resolution in the first months, growing to 60 percent or more after six to twelve months. Chatbase deploys fastest and handles repetitive questions well. Intercom Fin averages 76 percent. Ada and Forethought show strong enterprise results but need longer implementation. Knowledge base maintenance is the most underresourced part, so plan for ongoing content refresh.