Credits

What credits are spent on

A price is shown before you press for AI images and video, an SEO review, game art, imports, and Power Seth and Max Seth. Each message in the chat shows what it cost in its menu.

How much a build or a change costs depends on the model and the agent mode: a stronger model, or Power Seth and Max Seth, costs more. A change is priced at what it costs to make, which is roughly a third of a new app on the same model. See AI models and Build modes.

Imports from Lovable, Bolt, v0, GitHub or a ZIP cost a new app, plus the reading of the code it is rebuilt from. Your first import is free. See Import an app.

What things cost today

These are today's figures, in credits. The price on the button or in the line under the box is the one to trust.

On	A new app	A change	A Chat reply	A security or SEO check
GPT-5.4 mini (Auto on Free)	25	10	1	3
Claude Sonnet 5.5 (Auto on Pro)	50	15	3	8
Claude Opus 5.5	125	40	7	18
Claude Fable 5.1	245	75	13	36

Power Seth costs about one and a half times a Seth new app and about one and a fifth times a Seth change. Max Seth costs about twice a Seth new app, polish pass included. On Opus 5.5 that is 125 credits a new app on Seth, 185 on Power Seth and 245 on Max Seth.

Rewriting one element with AI costs about the same as a Chat reply. An AI image costs from 1 credit. An AI video clip costs from 110 credits for 4 seconds at 720p, and more for longer clips or 1080p; the panel shows the figure before you press the button.

Reading a file you attach, planning a build and suggesting a domain cost nothing.

Integration credits

The second allowance, for what your published apps do while people use them:

• a call to a connected service, like Stripe, OpenAI or Google Sheets,
• an email the app sends, like a confirmation or a form's receipt,
• a record the app writes to its database.

Reading data never costs anything. You see what each app spent under Usage.

The allowance is generous on purpose, and a published app does not go dark because of it:

Your balance

Your plan, your credits and where this month's went are in Settings, then Plan and credits. In the editor, the balance sits beside Publish. On the dashboard, the plan card shows what is left and when it resets, with buttons to change plan and, on a paid plan, to buy credits. On a phone the account menu opens as a sheet from the bottom, and the plan card sits at the top of it, with a Usage button.

• Unused credits carry over one month, then expire: what you do not spend carries into the next month, up to one month's worth.
• Free credits refill on the first of every month. On Pro and Business they refill every month on your billing day, even when you pay yearly.
• Extra credits can be bought any time on a paid plan: $30 for 1,200, $60 for 2,400 or $120 for 4,800. They never expire, and are spent only after the month's. On Free, a pack would cost more than Pro and give you less, so Free offers the plan instead.
• When you run out, the editor says so where you write, with what to do: wait for the month to turn, buy extra credits, or move up a plan. Someone working in your workspace on an app you created is told it is the owner who has run out.