Start small. Build at your pace.
Use the free allowance to explore, or add wallet credit for metered usage.
Free
A daily allowance for trying the builder with free-tier models.
No card required
Start for free- Free-tier models
- Daily usage allowance
- Explore the building workflow
Pay as you go
Choose your model and pay for usage from your wallet.
Checkout fee and applicable tax are separate.
Add wallet credit- Wallet-based metered usage
- Model choice from the current catalog
- Checkout quote before payment
Know where your top-up goes
Wallet credit and checkout total differ. The first top-up replaces the free allowance with metered wallet billing. Usage charges depend on the request; provider model prices are not final billing quotes.
- Currency
- USD
- Top-up fee
- 13%, minimum $0.50
- Tax
- Determined at checkout by location and applicable configuration
Do wallet top-ups require a recurring subscription?
No. Add funds when needed and pay for metered usage. A funded wallet balance has no scheduled expiry. Top-up fees and applicable tax are separate from spendable credit.
What changes after my first top-up?
Your account switches from the free daily allowance to wallet-based metered usage. A funded account needs a positive wallet balance; it does not return to the free allowance when that balance runs out.
Is the checkout total all spendable credit?
No. Only the credit amount reaches your wallet. The top-up fee and applicable tax are part of the payment total and do not become usage credit.
Are model catalog prices final RiverX quotes?
No. Catalog values describe provider inference prices where recorded. A build can involve multiple requests, context reads and retries. Final metered usage and the checkout top-up quote are separate.
Can I know the cost of a complete app from one prompt?
No fixed app-build price is established. Start with a small accepted workflow, inspect actual usage and budget for revisions and any application services you need.
Which tax amount should I use?
Use the quote presented at checkout. The amount depends on your location and applicable billing configuration; the example here shows the subtotal before tax.
Put the pieces together
Models, instructions and starting points for your next project.