Overview
On-demand usage is a pay-as-you-go option for all AI features in Heptabase. Once your free credits and included plan credits are used up, you can enable on-demand usage to keep using AI features and pay based on actual usage.
How do I enable it?
Go to Settings → AI features and enable on-demand usage. You will then be asked to set a monthly spending limit, which officially activates it.
How does billing work?
On-demand usage is billed based on actual usage. It is not a prepaid package of credits. You do not buy a fixed batch of extra credits in advance. Instead, you use AI first and are charged afterward based on what you actually used.
Billing happens when either:
your extra usage reaches $10, or
your billing cycle ends, at which point any remaining unpaid usage is charged.
For example, if you have only used $5.60 worth of on-demand usage by the time your billing cycle ends, you will be charged $5.60 at that time.
What does the monthly spending limit do?
The monthly spending limit caps your additional on-demand charges for the month. For example, if your limit is set to $10, your extra pay-as-you-go charges for that month will not exceed $10.
Does on-demand usage expire each month?
No. On-demand usage is not a monthly bundle that needs to be used up. It is simply pay-as-you-go billing for additional AI usage. You are charged only for what you use, up to your monthly spending limit.