Need Help With Account management

We are using bunch of projects and running into number of lines allowed limit.

Some of these projects are OpenSource projects and some are private projects.

should I create two organizations - one for private and one for public?

Hello,

Thank you for using SonarCloud.

Yes, you can have both private and public projects in the same organization. In fact, you are not able to create another SonarCloud organization tied to the same ALM organization.

Have a look here: https://sonarcloud.io/documentation/project-administration/switching-project-visibility/

Will open source projects in my organization count towards the billing metric: number of lines of code analyzed