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Compare · Billing platforms

Limitr vs Flexprice.

Flexprice shows cost next to revenue and checks balances over its API. Limitr decides in your process, with prices, costs, limits, and contract terms in one policy.

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The short answer
Flexprice

Open-source usage billing with cost and revenue analytics (AGPLv3).

Limitr

Decides every call in your app, with prices, costs, limits, and contract terms, then bills it.

Side by side

What happens when…

The moments that decide it, answered from each product's own docs and pricing.

When…FlexpriceLimitr
An agent loop runs away at 2 a.m.A remote balance check over its API, if your app makes it.The call that would break the budget never runs. Task, customer, and org budgets are checked in your app first.
A customer costs more than they payYes: costsheets, and revenue against cost per customer.Margin per account is live, and a cap on what an account can cost you stops it before it turns unprofitable.
Sales signs a custom dealRamps, minimums, and drawdown order, with HubSpot and Salesforce.Write it as a contract in Limitr Cloud. Its prices, limits, and terms are enforced in the product on the next call.
The service is unreachableThe balance check is a network call. Your app decides what happens when it fails.Nothing to reach. Decisions run in your process and keep working offline.
How it’s pricedFrom $199 a month plus 0.5% of billing. Enterprise from $3K a month.Free to build. $49 a month plus usage when live. Never a share of your revenue.

Checked November 10, 2026. Sources: Flexprice on GitHub · Flexprice costs · Flexprice pricing. Something out of date? Tell us.

Architecture

Where the decision happens.

The difference most comparisons skip: where a call is allowed, priced, and capped, and when.

Flexprice
A call to their service

Your app asks their API before acting, over the network, and decides what to do when that call fails.

Your app
over the network
Their APIanswers or fails
then
Model or APIthe cost
Limitr
Inside your app, before the call

The engine runs natively in your process and decides every call in about a millisecond: allowed, priced at your cost and your price, and held to the contract. Usage goes to Limitr Cloud in the background.

Your appLimitr engine inside
decided first
Model or APIthe cost
in the background
Limitr Cloudledger and invoices

Proof

Don't take our word for it.

Bring last month's usage. We'll replay it through Limitr Analyst and show your margin per account, and what Limitr would have stopped.

100,000+users metered for The Regis Company's Fortune 500 contract971 of 1,000attack calls stopped inside the app in our abuse demo, on a real policy0network calls to decide a request. It keeps deciding when the network doesn't.Apache 2.0Read exactly what decides your calls.
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The gap

What you'd still build on Flexprice.

Teams pair Flexprice with code of their own. With Limitr, that part is the product.

With Flexprice, you still build
With Limitr, you get
The call to check before every use
Budgets and limits checked in your app before the call
Fallback logic for when the check fails
Decisions in your process, with nothing to fail open
Contract terms enforced in the product
Contracts enforced in the product on the next call

Choose Flexprice if you want self-hosted open-source billing with cost analytics.

Switching

From Flexprice to Limitr.

No migration day. Limitr runs next to what you have until the numbers match.

Book a replayMap your pricing
Map your Flexprice plans and prices to a Limitr policy, line by line.
Run Limitr in observe mode next to Flexprice and compare the numbers on real traffic.
Switch enforcement on. Customers come over as they appear, with no migration day.

Common questions

Limitr vs Flexprice, answered.

Where the decision happens. Flexprice checks balances over its API; Limitr decides in your process with prices, costs, limits, and contract terms all in the policy.

Flexprice shows cost next to revenue and checks balances over its API. Limitr decides in your process, with prices, costs, limits, and contract terms in one policy. Choose Flexprice if you want self-hosted open-source billing with cost analytics.

Flexprice: a call to their service. Your app asks their API before acting, over the network, and decides what to do when that call fails. Limitr: inside your app, before the call. The engine runs natively in your process and decides every call in about a millisecond: allowed, priced at your cost and your price, and held to the contract. Usage goes to Limitr Cloud in the background.

Map your Flexprice plans and prices to a Limitr policy, line by line. Run Limitr in observe mode next to Flexprice and compare the numbers on real traffic. Switch enforcement on. Customers come over as they appear, with no migration day.

Flexprice: From $199 a month plus 0.5% of billing. Enterprise from $3K a month. Limitr: Free to build. $49 a month plus usage when live. Never a share of your revenue.

Limitr is built for them. An agent is a customer like any other, with its own plan, limits, and budget, linked to the workspace it works for. Budgets per task, customer, and org are checked in your app before each step runs, and the agent can see what it has left as a Claude tool.

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See it on your own pricing.

npm i @formata/limitr
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