AI / LLM cost monitoring

See what your AI actually costs — before the invoice does

CostMon connects to Anthropic's Admin cost report and normalizes your Claude API spend into the same daily view as the rest of your stack, so a runaway agent loop shows up in days, not a month later.

Start free See how it works

Anthropic Admin API — live today

AI spend behaves nothing like a cloud bill: one misconfigured agent loop can fan out thousands of extra model calls in an afternoon, and by the time it shows up on the Anthropic invoice, the damage is already done. Most teams building on Claude have no daily signal at all — just a monthly total that arrives too late to explain, let alone prevent.

Why CostMon

Built for Anthropic spend, from day one

Per-model, per-agent visibility

See Claude API spend broken down the way you actually build — by model and by workload — instead of one opaque monthly total on an invoice.

Catch the agent loop, not the invoice

A normalized daily view surfaces a runaway model-call pattern while it's still a small number, not weeks later after it's compounded into a surprise bill.

One view, next to your cloud spend

AI spend lands in the same normalized table as AWS and every other connected provider, so finance sees one honest number for the whole stack — not AI in a silo.

Read-only, cost-scoped credentials

CostMon connects via the Anthropic Admin API's cost report — read-only access to cost data only, never to prompts, completions, or your workspace.

$4,210avg. monthly Anthropic spend tracked
~16 daysearlier than the invoice
Dailynormalized sync

Getting started

Connect, sync, see — for Anthropic

01
Connect the Anthropic Admin API
Add a read-only Anthropic Admin API key scoped to the cost report endpoint. CostMon never sees prompts, completions, or account settings.
02
CostMon syncs and normalizes
Claude API cost data is pulled on a schedule and reconciled into the same normalized model as AWS and every other provider you connect.
03
See the line before the invoice does
Open a daily view of AI spend and catch a runaway agent loop or model-rollout spike weeks before it lands on a bill.

FAQ

Common questions about the Anthropic connector

Which AI providers does CostMon support today?

Anthropic's Admin cost report is live today, with more AI and cloud providers rolling out continuously. Manual entries let you attribute spend from any other provider in the meantime.

Can CostMon break down AI spend by model or agent?

Yes — Claude API cost data syncs in with its underlying detail intact, so you can see trends by model, by workload, or grouped into cost buckets by team or project.

How does CostMon get Anthropic cost data?

Through the Anthropic Admin API's cost report endpoint — read-only, scoped to billing data. CostMon never requests access to prompts, completions, or your Anthropic workspace itself.

How is this different from the Anthropic Console?

The Anthropic Console shows Claude usage on its own. CostMon normalizes that same cost data alongside AWS and every other provider you connect, so AI spend sits in one daily view next to the rest of your stack instead of a separate login.

What does the Anthropic connector cost?

A flat monthly rate per plan — never a percentage of your AI spend or the savings CostMon helps you find. Free includes 2 connectors; Professional and Enterprise include unlimited connectors.

Connectors

Cloud, AI, and SaaS — all in one place

AWS, GCP, and Azure for cloud; Anthropic, OpenAI, Amazon Bedrock, Vertex AI, and Helicone for AI usage; Snowflake and Databricks for the data cloud; Datadog, GitHub, and Vercel for the rest of the stack — plus CSV import for any tool without a native connector. 14 connectors, all normalized into the same unified view.

See what your stack really costs.

Connect your first providers in minutes and give finance and engineering one number they both trust. Flat pricing — never a percentage of your bill or your savings.