Open AI Add Ons
- Sign in as a teacher.
- Open your account or profile area.
- Select Billing.
- Select AI Add Ons.
One-Time Free Top-Ups
The first time a request needs more credit than you have available for a service, LingoLesson automatically adds a free top-up to that balance:
- Speech-to-Text (ASR): 100 minutes.
- Text-to-Speech (TTS): 50,000 characters.
- Text Recognition (OCR): 50 pages.
- Generative AI (GenAI): 10,000 tokens.
Each teacher account can receive each of these four grants once. The balances are shared by the teacher and students in their classes; the grants are not per student or per class and do not renew monthly. Existing teacher accounts are eligible when they next need a top-up, even if they ran out of credit before this feature became available.
The credit is available immediately, and the teacher receives an email explaining the top-up with a link to purchase more. There is no charge, and no purchase is made automatically. This gives students more time to study while the teacher decides whether to buy more credits.
If a request still needs more than the balance after the free top-up, it cannot proceed. The free credit stays in your account so you can try a smaller request or purchase more.
After a service's one-time grant has been used, further insufficient requests receive the usual balance warning instead of another grant. Warning emails are limited to one per service in 24 hours.
Top Up a Package
You can buy more credits at any time from Billing → AI Add Ons.
- Review the Remaining balance shown for each package.
- Select Top Up for the package you want to buy.
- Review the purchase details in the dialog.
- Enter the billing and payment details.
- Select Secure Purchase, then confirm the one-time charge in the Confirm Purchase dialog.
Use AI Tools
- For lesson item generation, see AI-generated lesson items.
- For AI-checked student answers, see Check Answer and AI-checked questions.
- Past purchases and receipts are listed in Past Purchases.