Compare · AI gateways and routers

Limitr vs OpenRouter.

OpenRouter resells model access through one API and one balance. Limitr never touches your tokens: you keep your provider keys, and Limitr decides what each customer may use and bills them for it.

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The short answer

OpenRouter

One API and one credit balance for hundreds of models, joining Stripe.

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…OpenRouterLimitr

An agent loop runs away at 2 a.m.Workspace budgets cap your own spend, not each customer's.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 payProvider prices passed through, plus a 5.5% fee on credits. Your price isn't in it.Margin per account is live, and a cap on what an account can cost you stops it before it turns unprofitable.

A customer's AI budget runs lowRoutes by price and uptime, not the customer's plan.Your app asks Limitr which models the customer may use and can afford, and switches or downgrades. No proxy, no token resale.

Billing your customers for AINot a billing tool.Meters each customer, keeps the ledger, and sends invoices. Collect through Stripe, or bill manually.

The service is unreachableEvery model call goes through OpenRouter.Nothing to reach. Decisions run in your process and keep working offline.

Checked November 10, 2026. Sources: OpenRouter pricing and Stripe deal (UsagePricing) · Stripe and OpenRouter (The New Stack). Something out of date?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.

OpenRouter

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 contract 971 of 1,000attack calls stopped inside the app in our abuse demo, on a real policy 0network 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 OpenRouter.

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

With OpenRouter, you still build

With Limitr, you get

Per-customer limits and budgets

Limits tied to the customer's plan and contract

Your price on every call, for margin

Your cost and your price on every call, so margin per account is live

Metering and invoices for your customers

Metering, ledger, and invoices for your customers

Choose OpenRouter for one API and one bill across hundreds of models.

Using both

Use any provider. Bill for all of it.

OpenRouter can be one of your providers. Limitr meters what each of your customers uses and bills them for it.

OpenRouter

Model access and routing
One balance for providers

Limitr

Per-customer limits and budgets
Your price on every call

Switching

From OpenRouter to Limitr.

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

Book a replay Map your pricing

Keep OpenRouter as a provider if you like.

Run Limitr in observe mode next to OpenRouter and compare the numbers on real traffic.

Switch enforcement on. Customers come over as they appear, with no migration day.

Common questions

Limitr vs OpenRouter, answered.

Stripe agreed to acquire OpenRouter in August 2026; OpenRouter said its pricing is unchanged.

No. You keep your own provider keys and rates. Limitr decides and bills; it never sits between you and the model.

OpenRouter resells model access through one API and one balance. Limitr never touches your tokens: you keep your provider keys, and Limitr decides what each customer may use and bills them for it. Choose OpenRouter for one API and one bill across hundreds of models.

OpenRouter: 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.

Keep OpenRouter as a provider if you like. Run Limitr in observe mode next to OpenRouter and compare the numbers on real traffic. Switch enforcement on. Customers come over as they appear, with no migration day.

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