EnergyPlus Simulation vs OpenStudio Simulation

Is there any advantages or disadvantages between using either of the components? Just a curiosity I had.
What do you usually use?

Thanks!

The OpenStudio is basically calling the EnergyPlus under the hood. So essentially they are the same.
Because right now, it is not easy to add HVAC system directly to EnergyPlus idf file from HB, but OpenStudio bridges these two sides.
So use OpenStudio when you need to run the model with HVAC system.

Also, please see this

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Thank you very much!