Access IBM ILOG CPLEX Optimization Studio, now in a monthly and annual subscription.

Access IBM ILOG CPLEX Optimization Studio, now in a monthly and annual subscription. Buy now


Frequently asked questions



Do you offer a free trial for IBM ILOG CPLEX Optimization Studio?

Yes, we offer IBM ILOG CPLEX Optimization Free Edition. You can register to download it at the link below. The free 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.

Do you have an unlimited version of IBM ILOG CPLEX Optimization Studio?

Besides the commercial version, IBM runs the IBM Academic Initiative where students and faculty members have access for free. Our academic entry is without functional and model size limitations, and you must register to check your eligibility. If the program accepts you, then you will get an email notification with download instructions.

How does billing work for the subscription license?

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.

How do I cancel my subscription license?

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

How can I share my CPLEX subscription within my team?

You would need to buy a subscription license for each member of the team.

Do I have to be online to use the subscription license?

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 again could be offline for another 14 days.

Is support included for your subscription offering and other licensing options?

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

What other licensing options do you have available outside of the subscription license?

IBM has perpetual licenses for development and deployment as well as hosted managed cloud offerings. Machine capacity and user-based entitlements in addition to thread-based for clusters are also available. For more information on the hosted managed cloud offerings, visit the link below or contact an IBM sales representative for more details.

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