Pricing

Rigor that starts free.

One engine, every stream. Begin on the free tier with no credit card, then pay only for the volume you actually monitor — metered on committed events, nothing else.

Open SDK

MIT$0

The open-source client for the API — integrate in a few lines.

Free & open-source client

Read the SDK docs
  • Typed Python client (MIT)
  • Talks to the hosted API
  • Pairs with any cloud plan
  • Backtest examples · community support

Free cloud

no credit card$0

Kick the tires on your own data.

100k committed events / mo

Start free
  • 1 live monitor
  • Both alarm tiers — warnings + budgeted pages
  • Backtest gate on your history
  • Webhook alerts
  • Email & Slack delivery — at launch
Most popular

Pro

$99/mo

For a solo dev or a small team.

5M committed events / mo

then $20 per additional 1M · set a spend cap

Start free
  • Up to 10 monitors
  • Webhook alerts
  • Email & Slack delivery — at launch
  • Alarm certificates (verifiable exports)
  • 90-day history
  • Optional monthly spend cap

Team

$500/mo

Fleet-scale, with false-discovery control.

50M committed events / mo

volume discounts beyond — talk to us

Start free
  • Unlimited monitors
  • Online-FDR across streams
  • Priority support
  • SSO (soon)

Prices in USD. Metered on committed events; volume discounts at scale. Coming at launch: monitors whose verdict page you make public are free forever.

What counts as an event?

You’re billed on committed events — nothing else. One committed event is one data point accepted into a monitor: a single metric value you stream in, such as a prediction error, an LLM judge score, or a latency reading. Rejected or malformed payloads aren’t metered, and there are no per-seat or hidden dashboard fees. Your monthly bill is simply the total committed events across all your monitors, measured against your tier’s allowance.

Estimate

What will it cost you?

Slide to your monthly volume for a recommended tier and estimated spend — including Pro overage. No sign-up required.

100k250M

One committed event is one data point accepted into a monitor. Drag to match your throughput.

Recommended

Pro

$99/mo

5M events included, flat.

Start free

Choosing

Which tier is right for you?

Open SDK
You want the open-source client library to wire the hosted API into your code.
Free cloud
You're evaluating one stream, or running a low-volume side project.
Pro
You're a solo dev or small team watching a handful of production streams.
Team
You run a fleet and need false-discovery control across every stream.

Pricing FAQ

How billing works

Stop guessing whether it broke.

Point ValidAnytime at one stream and see whether — and on which day — it would have caught your last regression. On your own data, in minutes, free.

The backtest is free and runs in your browser — no signup, nothing uploaded.