Help me understand AI Translation pricing
The pricing plans are available here:

You will see AI Text Processing and the characters count each plan allows x 1000. So, for example, you can process up to 100,000 characters with the free plan. With each translation project, the system adds character counts of the source text and translated text, and deducts this number from your AI Text Processing credits. You can track your current usage and your remaining credits on this page:

There is a default email notification that goes out when you exhaust 80% of the credits for the month, so this will give you enough time to make arrangements if needed. You can choose to upgrade to the next plan if you’d like to process more translation tasks or do nothing. If you run out of credits, translation will not be available for the remainder of the billing period, and the credits will reset with the next billing cycle. You can verify that the notification is turned on (or turn it off if needed) on the Account page.