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Compare · Building it yourself

Limitr vs Building it yourself.

The first version is quick either way. Limitr is built for every change after it: a new plan, one customer’s deal, a model that costs more, with current customers handled.

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The short answer
Building it yourself

Counters, tables, and webhooks in your own code.

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…Building it yourselfLimitr
You add a planNew tables, a migration, and a release.Add it in Limitr Cloud and publish. Live on the next call.
Sales signs a custom dealA branch in the code for that customer.Write it as a contract in Limitr Cloud. Its prices, limits, and terms are enforced in the product on the next call.
A model's price changesFind every place the cost is hardcoded.Change one credit. Every plan that uses it follows.
Two calls race for the last creditYour own locking and reservation code.Reserved and settled by the engine, so concurrent calls can’t overspend.
Who owns itYou do, along with every edge case.You do too: the engine is open source and runs in your app.

Checked November 10, 2026. Sources: Limitr engine. Something out of date?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.

Building it yourself
Wherever you write it

Checks live in your own code, wherever each team put them, with every change a release.

Your appyour own checks
every change a release
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 Building it yourself.

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

With Building it yourself, you still build
With Limitr, you get
Resets, grants, caps, and concurrency
Tested in the engine, already
An editor so finance and sales can change pricing
Limitr Cloud, with replays before you publish
Ledgers, invoices, and margin reporting
Built in, per customer

Build it yourself if your pricing will never change.

Switching

From your code to Limitr.

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

Book a replayMap your pricing
Write your current plans and limits as a policy, or let a coding agent do it with the Limitr skills.
Run it in observe mode next to your code and compare the numbers on real traffic.
Switch enforcement on and delete the counters, tables, and branches it replaces.

Common questions

Limitr vs Building it yourself, answered.

If your pricing never changes, build it. If plans, deals, and model prices will keep moving, that is the work Limitr removes.

Building it yourself: wherever you write it. Checks live in your own code, wherever each team put them, with every change a release. 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.

Write your current plans and limits as a policy, or let a coding agent do it with the Limitr skills. Run it in observe mode next to your code and compare the numbers on real traffic. Switch enforcement on and delete the counters, tables, and branches it replaces.

See it on your own pricing.

npm i @formata/limitr
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