Siradel Web Service SaaS API facturation is based on simulation credits.
You can access these credits by clicking on your profile infos.
One credit is consumed for one transmitter prediction.
However, if you re run a transmitter prediction you have already ran in a previous session (even on another day), it won't consume one credit for this transmitter. This implies to get same transmitter information (in table), as well as same global parameters (frequency, antenna, ...), except for colorscale and simulation name.
Example 1 : you run a network, with one transmitter modified
You have previously ran a netowkr configuration with 12 transmitters, and you now run this same simulation, with only one transmitter azimuth changed (otherwise, same table and same global parameters). Then, only one additional simulation credit will be counted.
Example 2 : you modify receiver antenna gain
You have run a network simulation @3500 MHz, you want to re run it with a different receiver antenna gain. In that case, it modifies global configuration, and this will consume one new credit per transmitter.