This object represents a subscription billing plan for products or services that you offer your customers.
For example, you might have a $50 monthly plan with a set of features, and a $500 annual plan.
If you are unfamiliar with the concept of a subscription plan, think of it as any product or service that has a specific recurring billing period. For example, you may offer Custom branding as an add-on feature in your SaaS product at $25/month. In this case, you would create a plan object with the name "Custom branding" in ChartMogul, and a billing interval of 1 month.