The MP Model Builder add-in constructs linear and integer optimization models.The add-in constucts forms to hold the variables, constraints, and constraint coefficients for the linear model. Four alternative formats are available. They differ on the placement and orientation of the variables and constraints. A new feature stores constraint coefficients in a list rather than in a table.

The MP Model Builder add-in was modified on 2/20/2011 to allow column list models to have more than 32,000 nonzero coefficients.