Licensing options

The IBM® ILOG® CPLEX® Optimization Studio subscription allows only development use. There are unlimited variables and constraints and support is included for as long as the subscription is active.

Yes, we offer an IBM ILOG CPLEX Optimization no-cost edition. You can register to download it using the link. The no-cost edition is restricted to problems up to 1,000 variables and 1,000 constraints. A time-limited trial without restrictions on problem size is available upon request by contacting an IBM sales representative.

Beyond the commercial version, IBM runs the IBM Academic Initiative where students and faculty members have access to the product at no cost. Our academic entry is without functional or model size limitations, and you must register to check your eligibility. If the program accepts you, then you receive an email notification with download instructions.

The CPLEX subscription can be purchased as a monthly or annual subscription and is charged at the beginning of the billing period. You will be automatically billed on a periodic basis, according to the terms of your subscription.

Before you reach the next month of your subscription offering, contact us to cancel your automatic renewal.

A single subscription can include one or more users, and each user receives a personal key to unlock the software. Each member of your team who uses IBM ILOG CPLEX Optimization Studio needs to have their own key. Users can be managed from My Products and Services. When you remove a user from the subscription, their key becomes inactive. When you add a user to the subscription, they receive a key.

Each day when the first “solve” happens, the software goes to check eligibility to use the product unlimited. However, after at least one check, the user can be offline for 14 days before the product goes back to the limited mode. If the user connects and eligibility is checked before the end of the 14th day, then the user can be offline for another 14 days.

Yes, support is included for while the subscription is active and 12 months for other licensing options.

The IBM ILOG CPLEX Optimization Studio subscription is supported on Windows, macOS and Linux (on x86 platforms). Refer to the system requirements information on the supported releases of this product.