For SaaS teams

Your AI costs scale with your users.
Your pricing should too.

LLM Cost Tracker gives SaaS teams per-user cost attribution, tier-based spend enforcement, and the margin visibility to price AI features confidently.

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Cost by user

True cost by tier

Enforce Limits

The problem

AI features are easy to ship.
Profitable ones are harder.

Three things that quietly destroy margin when you add LLM features to a SaaS product.

Problem 01

Free tier users cost more than they generate

Free users explore heavily. Without per-user attribution you can't see it happening — and without enforcement you can't stop it. One power user on a free plan can cost more than ten paying customers.

Problem 02

You don't know your cost to serve per tier

Your API bill is one number. You can't see whether Pro customers are 3× more expensive than Free, or whether your Enterprise tier is actually profitable. You're pricing on gut feel, not data.

Problem 03

Homegrown enforcement is a distraction

Building a spend counter, a reset job, a per-user attribution system, and a dashboard to see it all — that's weeks of work that doesn't ship features. And you'll rebuild it every time your pricing model changes.

The solution

One SDK. All three problems solved.

See cost by user — ranked by spend

Every call tagged with a userId. The dashboard ranks users by total spend so you can see your top 10 cost drivers at a glance. Free tier abusers surface immediately.

Know your true cost to serve per tier

Pass a tier tag on every call. The dashboard breaks out total spend, avg cost per call, and call volume by tier. See exactly what free, pro, and enterprise users cost to serve.

Enforce limits without building anything

Define a spend limit per tier in the dashboard. The SDK enforces it automatically — no counters, no reset jobs, no backend work. Block, warn, or dry-run. Change it anytime without a deploy.

Override per user when needed

Give a specific customer a higher or lower limit than their tier. Enterprise customers with custom contracts, free users on trials, power users you want to accommodate — handled without touching code.

TierLimit / moActionOverride

free$5.00Block—

pro$50.00Warn—

enterprise$500.00Dry run—

user_99$0.50Block↑ override

Configure once. Enforce everywhere. user_99 is a free tier abuser with a custom $0.50 cap. The tier template is ignored for this user — no code change required.

llm-call.ts2 fields

// Add userId + tier. That's the whole integration.
await trackedCall(({
  client, params, apiKey,
  group: 'summarize',
  userId: session.userId,
  tier: session.plan, // 'free' | 'pro' | 'enterprise'
})

Unit economics

Know your true cost
to serve — by tier.

Your Pro plan costs $29/month. If each Pro customer generates $18 of LLM API spend, your margin on AI is razor-thin and one heavy month erases it. You need to know this number before you learn it from your P&L.

Pass a tier tag on every call. LLM Cost Tracker aggregates spend, call volume, and avg cost per call by tier automatically — no extra instrumentation, no data warehouse required.

Cost to serve · by tier · May 2026

TierAvg cost / userCallsTotal spend

free

$4.8296% of limit

12,441$1,204

pro

$11.20

38,820$5,600

enterprise

$38.40

94,200$9,600

Free tier avg cost is $4.82 per user — 96% of your $5 free tier limit. You have almost no headroom before free users run at a loss.

Reselling AI features

Your customers use AI.
You absorb the cost.

When you resell AI features, your customers' usage directly eats your margin. One heavy customer on a flat-rate plan can cost more than they pay. Without per-customer visibility you won't know until month end.

Pass the customer's account ID as userId and their plan as tier. You get per-customer cost attribution and automatic spend enforcement — without registering every user individually.

↳

Per-customer attribution

See exactly what each customer costs to serve. Surface outliers before they hit your P&L.

⊘

Automatic spend caps

Set a monthly limit per plan tier. The SDK enforces it — no per-customer config required.

⚑

Early warning before limits

onBudgetWarning fires at 80% of limit. Show an in-app message, email the account owner, or throttle requests — your choice.

✦

Override per account

Enterprise customers with custom contracts get their own limit. No code changes, just a dashboard entry.

Get started

Know what your AI features actually cost to deliver.

Free tier. One import. Data flowing in 5 minutes.

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Your AI costs scale with your users.Your pricing should too.

AI features are easy to ship.Profitable ones are harder.