Pay-as-you-go pricing charges customers only for what they consume, with no fixed fee or commitment. Each unit of usage is billed at a set rate, so cost scales up and down directly with use.
Pay-as-you-go pricing is the simplest expression of usage-based billing: no subscription, no commitment, just a rate per unit of what you use. It is how cloud infrastructure and most AI APIs are priced, because it lets a customer start with zero fixed cost and pay in proportion to value received.
How Pay-as-you-go pricing works
A pay-as-you-go model sets a price per unit of consumption (an API call, a GB stored, a token, a compute-second) and bills the customer for the units they use. There is no base fee and no minimum; a customer who uses nothing pays nothing, and a customer who uses a lot pays proportionally.
Charges are typically metered through the period and billed in arrears, or drawn down from a prepaid balance in real time. The defining trait is the absence of a fixed commitment: the entire bill is variable and follows usage.
Pay-as-you-go pricing examples
A cloud provider charges per GB of storage and per compute-hour with no subscription. An AI API charges per token. A mapping API charges per request. A customer can sign up, use a little, and pay only for that little, which is what makes the model good for adoption.
Many products start customers on pay-as-you-go to lower the barrier to entry, then introduce a hybrid plan with a base fee and allowance once usage is established.
Pay-as-you-go pricing vs Subscription
| Pay-as-you-go | Subscription | |
|---|---|---|
| Fixed fee | None | Yes, recurring |
| Cost at zero usage | $0 | Full fee |
| Predictability | Low (varies with use) | High |
| Best for | Adoption, variable usage | Steady, ongoing value |
Benefits & when to use it
Pay-as-you-go is the right model for lowering the barrier to entry and aligning cost with value, especially for infrastructure and AI products where usage varies enormously between customers. A new user can try the product for cents, and a heavy user pays proportionally.
Its weakness is predictability, for both sides: the vendor gets volatile revenue with no floor, and the customer can be surprised by a large bill. That is why many products pair it with spend caps or evolve toward hybrid pricing once usage stabilizes.
FAQ
What is pay-as-you-go pricing?
A model that charges only for what a customer consumes, with no fixed fee or commitment. Each unit of usage is billed at a set rate, so the entire cost scales directly with use.
How is pay-as-you-go different from a subscription?
A subscription charges a fixed recurring fee regardless of usage; pay-as-you-go charges nothing fixed and bills only for consumption. Subscriptions give predictability; pay-as-you-go gives a zero-commitment entry and cost that tracks usage.
What is the downside of pay-as-you-go pricing?
Unpredictability. Revenue is volatile for the vendor with no floor, and customers can face surprise bills from a usage spike. Spend caps, alerts, or a move to hybrid pricing address this.
How Credyt handles Pay-as-you-go pricing
Credyt runs pay-as-you-go without the bill-shock risk. Usage is metered and debited from a prepaid wallet in real time, so customers pay for exactly what they use and the vendor never carries unpaid consumption. Customers see a live balance and can set auto top-up, so zero-commitment usage does not turn into a surprise invoice. Explore Credyt →