Get started

See what your stack really costs, today

Start free See a live demo

How it works

Three steps to your first synced numbers

1
Sign in with your work email
Create your account with the email you use for work. No credit card, no sales call.
2
Connect one provider, read-only
Pick AWS, Anthropic, or another connector from the list. CostMon reads invoices and usage records, not your code.
3
See your first synced numbers
CostMon pulls your cost data on the spot and normalizes it into one view.

No account needed

Nothing to install, nothing to connect

Try one of these free tools first. Each one runs in your browser and needs no account.

AWS Bill Analyzer

Drop in a Cost Explorer CSV and see where the money went last month.

You bring: An AWS Cost Explorer CSV export
You get: A cost breakdown, period-over-period movers, and a run-rate projection. Nothing leaves your browser.

AI Spend Analyzer

Drop in a Claude or OpenAI usage export and see where the AI bill actually goes.

You bring: An Anthropic Console or OpenAI Usage Dashboard export
You get: A cost breakdown by model, what changed, and nine findings linked to the matching cost-cutting lever. Nothing leaves your browser.

LLM Cost Calculator

Model token volume and prompt caching to see what an AI feature costs per request.

You bring: Expected request volume and rough input/output token counts
You get: A cost per request and per month, with caching modeled in

Savings Calculator

Estimate what rightsizing, commitment coverage, and idle cleanup could save on your current bill.

You bring: A rough monthly cloud spend number
You get: An estimated savings range across the three biggest levers

Or see a live demo with sample data →

Before you connect anything

What connecting a provider does and does not do

Connectors stay read-only

CostMon reads invoices and usage records, not your code.

Read the security page →

Check the exact access first

Every connector page lists the exact permission it asks for, before you connect anything.

Browse connector docs →

The Free plan costs $0

Start on Free and move up only when you need more connectors or more history.

Compare plans →

FAQ

Common questions

Answers to what people ask before they connect a provider.

Does it cost anything to start?

No. Sign-up is free, and the Free plan itself is $0.

How long does the first sync take?

CostMon starts pulling your cost data as soon as you connect a provider. Most connectors show first numbers within minutes.

Can I try CostMon before I connect a provider?

Yes. The site has free browser-based tools. They run without an account.

Is my billing data safe once I connect it?

Yes. Connectors only read invoices and usage records. They never touch your code.

What if I would rather talk to a person first?

Use the contact page instead. Send your question there before you connect anything.

Would you rather talk to a person first? Contact us instead →