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Compare · AI cost and margin

Limitr vs Amberflo.

Amberflo attributes AI cost and enforces at a gateway your calls pass through. Limitr decides in your app, with no gateway in the path, and holds each customer to their contract.

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The short answer
Amberflo

Metering, AI cost attribution, billing, and an AI gateway.

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…AmberfloLimitr
An agent loop runs away at 2 a.m.Budgets and cost guards at its AI gateway.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: cost and margin per customer, model, and workload.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 dealCommits and prepaid credits.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 unreachableModel calls route through its gateway.Nothing to reach. Decisions run in your process and keep working offline.
How it’s pricedFrom $99 a month (Starter).Free to build. $49 a month plus usage when live. Never a share of your revenue.

Checked November 10, 2026. Sources: Amberflo on AWS Marketplace · Amberflo 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 Something out of date?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.

Amberflo
A gateway in the request path

Every call routes through their gateway or proxy, which enforces budgets per key at provider prices.

Your app
every call
Gatewaycaps per key
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 Amberflo.

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

With Amberflo, you still build
With Limitr, you get
A gateway in your request path
No gateway: decisions in your process
Per-customer contract terms in the product
Contracts enforced in the product on the next call
An engine you can read and run yourself
An open-source engine, Apache 2.0

Choose Amberflo if you want a managed AI gateway with cost allocation across cloud and model spend.

Switching

From Amberflo to Limitr.

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

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

Common questions

Limitr vs Amberflo, answered.

No. Limitr makes the decision in your app before the call, with your provider keys staying where they are.

Amberflo attributes AI cost and enforces at a gateway your calls pass through. Limitr decides in your app, with no gateway in the path, and holds each customer to their contract. Choose Amberflo if you want a managed AI gateway with cost allocation across cloud and model spend.

Amberflo: a gateway in the request path. Every call routes through their gateway or proxy, which enforces budgets per key at provider prices. 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 Amberflo plans and prices to a Limitr policy, line by line. Run Limitr in observe mode next to Amberflo and compare the numbers on real traffic. Switch enforcement on. Customers come over as they appear, with no migration day.

Amberflo: From $99 a month (Starter). 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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