Pay per page. Keep what you don't use.
Start with 5 free pages when you create an account (on the base model; other models and retouching use bought credits).
A page costs what its model costs
A page · from 1 credit
Segmented, read and translated with your project's model: 1 credit with gpt-6-luna, 1.5 with gemini-3.8-flash, 3 with claude-opus-5-5. A page that fails is refunded.
Re-translate this page · from 0.1 a page
Re-translate this page, or Re-translate the volume, with any model the app offers, at the model's page price (0.1 with gpt-6-luna, 0.5 with gemini-3.8-flash, 2 with claude-opus-5-5). Only the translation runs: nothing is read again. Re-translate this line: the model's line price, 0.1, 0.2 or 0.6.
Credits never expire
Buy once, use them whenever. No subscription.
Only finished pages count
If a page fails, its credits come back automatically. So do a retouched block's when its image is not made.
What is a page?
One image in your volume. A webtoon is joined into one strip and cut into pages about three times as tall as they are wide; each is a page. A typical volume is about 200 pages.
Fixing a line
Re-translate this line costs the model's line price (0.1 with gpt-6-luna, 0.2 with gemini-3.8-flash, 0.6 with claude-opus-5-5). Box, read and translate on a line Serifu missed costs 0.2 to read the box plus the model's line price. Serifu asks first, every time.
Read and translate this page again: from 1 credit
Read and translate this page again reads a page again from its image and translates it, at the page's price with its model, every time. A page that holds more text than its price covers is skipped when a volume runs, marked Over the allowance, handle by hand; Serifu says its price first when you handle it, and nothing is charged until you agree.
Retouching: 2 credits a block
Retouch this page is optional: each line's text drawn on the art is a block, and you choose the blocks. The image model removes their original text at the page's own resolution and your translation is set as the original was drawn. Nothing is read or translated again. 2 bought credits a block, only when you ask.