The Centre for World Food Studies is developing price endogenous models focusing on agriculture and incorporating detailed agronomic information. Moreover, the structure of these models is such that they can be linked in order to represent international trade, resulting in a global equilibrium. The developing country models emphasize and analyze the problem of small and landless farmers, the role of possible ecological constraints, and the changes in the distribution of income between agriculture and non-agriculture as well as within agriculture. Model alternatives can be analyzed through changes in various parameters, e.g. direct and indirect tax rates, tariffs, buffer stocks, import and export quotas. A brief outline of the Thailand model is presented.