Most RecentNewest TopicsMost LikesMost ViewedFICO Xpress 10.0 - October 2026 Xpress Solver is the technology component that supports all of FICO's optimization solver technologies including: Xpress Optimizer: core engine comprises of LP (simplex and barrier), MIP, (MI)QP, (MI)QCQP, and (MI)SOCP solvers.