Cocoa farmers have many needs to improve their performance and returns. To meet such needs, a diverse range of services are delivered to farmers; via governments and their extension agents, non-government and civil society organizations, and increasingly by traders and buyers. What do we know about the costs, (initial investments and on-going expenses) cost-effectiveness, efficiency (are farmers satisfied, what is the effect of the services?), scalability (can such models be widened to reach more farmers easily at the same cost and quality?) and their long term financial self-sustainability of services. This interactive session will present what we know so far on models that are working, where, for who and at what costs. You are invited to give feedback and present exciting new service delivery models!