AMPL offers superior support by our development and technical support teams.
Contact us for general queries, partnerships, and more.
We can help you find the license and offering that works best for your situation.
SUPPORT
AMPL is now on Discourse! 🎉
This is your NEW best place to talk about optimization problems, and get support for AMPL and AMPL Community Edition from our dev team and the community.
Join the conversation at discuss.ampl.com
SUPPORT
AMPL is now on Discourse! 🎉
This is your NEW best place to talk about optimization problems, and get support for AMPL and AMPL Community Edition from our dev team and the community.
Join the conversation at discuss.ampl.com
SOLVER UPDATES
All-new Gurobi 10 solver driver for AMPL!
Featuring a new network simplex algorithm, significant performance gains on MIPs, and more!
Our enhanced Gurobi driver (previously x-gurobi) is now the default gurobi driver.
AMPL offers superior support by our development and technical support teams.
Contact us for general queries, partnerships, and more.
We can help you find the license and offering that works best for your situation.
A proven choice for highly nonlinear problems, CONOPT’s efficient and reliable multi-method architecture handles a broad range of models. Specialized techniques achieve feasibility quickly, while powerful preprocessing tools reduce problem size and suggest formulation improvements.
CONOPT downloads are available from the My Downloads page of your account at the AMPL Portal, and are included in the bundles that are used for free trials.
Developer: ARKI Consulting & Development A/S
Current version: 3.17A
Problem types supported: Linear, quadratic, and general smooth nonlinear objectives and constraints in continuous variables.
Algorithms available: Dynamic selection among feasible-path generalized reduced gradient, sequential quadratic programming, and sequential linear programming.
Special features: Extensions to the basic algorithms take advantage of second derivatives and identify feasible solutions more reliably.
ARKI Consulting & Development website
Using-CONOPT-with-AMPL: Guide and option listing