Straightforward and affordable pricing. Only pay for what you actually need!


We aim to keep our pricing as simple as possible. Therefore you only pay for your computational power. Your up- and download bandwidth is already included as well as the storage of your files for 30 days. If you would like to use KaleidoSim as permanent cloud storage, you can add this option within your user account.

Core hour


A core hour is one virtual CPU with 4 GB Memory running for one hour.

  • Always running on the newest & fastest hardware
  • Upload and download volume included
  • Files stored for 30 days for free

Virtual vs pysical core example

Let's make a sample calculation

Let's take a SimpleFoam flow case with around 4 million cells and compare decomposing to virtual and physical cores. The case takes about 5000 iterations to converge. In one case we start a 8 vCPU machine and decompose it to all 8 virtual cores. In a second case we start a 16 vCPU machine and decompose our case to the 8 underlying physical cores.

This will result in the following times and costs:

Physical core



Virtual core




USD costs


USD costs

ResourceCPUh per hTimeCPUh usedSum USD8 vCPUs834607.71.0916 vCPUs16244010.81.51