Leakleak
Free forever for ≤ 10k events / month

Stop wondering where your LLM spend goes.

I lost $59.35 on Claude last month and still couldn't tell you why. So I built Leak. See every API call broken down by feature, user, and model— the one thing the Anthropic Console can't show you. Built for me. Free for you.

Start tracking · freeStar on GitHub
Built by @bennetglinder99 · in public · open source
~30 seconds to integrate
pip install leak

from leak import Anthropic

client = Anthropic()  # uses ANTHROPIC_API_KEY + LEAK_KEY env vars

client.messages.create(
    model="claude-opus-4-7",
    feature="icp-scoring",
    user="user_123",
    messages=[{"role": "user", "content": "..."}],
)
What you get
Leakleak
Workspace
Nous
Overview
Cost
Features
Logs
Clients
Chat
Overview
Month to date
Range MTD
API key All
Total spend
$59.37
Events
4,832
Tokens in
11.3M
Tokens out
400K
Daily spend
Spend by feature
icp-scoring$27.84 · 47%
playground$18.92 · 32%
onboarding-questions$8.21 · 14%
weekly-brief$3.41 · 6%
morning-coffee$0.99 · 1%

The Anthropic Console shows you tokens.
Leak shows you features.

Tag by feature

Wrap your Anthropic client. Pass feature='icp-scoring' on each call. Every chart in Leak is filterable by it.

Per-user spend

See which customer is burning the tokens. Group, sort, drill in.

Ask in plain English

Built-in AI chat over your metadata. Bring your own Anthropic key so it stays free.

Pricing

Two tiers. That's it.

Free

$0forever
  • 10,000 events / month
  • 30 days of history
  • All dashboards + filters
  • Per-feature, per-user breakdowns
  • AI chat (bring your own Anthropic key)
  • Unlimited workspaces
Start free

Pro

Popular
$9per month
  • Unlimited events
  • Unlimited history
  • Everything in Free
  • Email support
  • Cancel anytime
Upgrade