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
The open-source client for the API — integrate in a few lines.
Free & open-source client
- Typed Python client (MIT)
- Talks to the hosted API
- Pairs with any cloud plan
- Backtest examples · community support
Free cloud
Kick the tires on your own data.
100k committed events / mo
- 1 live monitor
- Both alarm tiers — warnings + budgeted pages
- Backtest gate on your history
- Webhook alerts
- Email & Slack delivery — at launch
Pro
For a solo dev or a small team.
5M committed events / mo
then $20 per additional 1M · set a spend cap
- Up to 10 monitors
- Webhook alerts
- Email & Slack delivery — at launch
- Alarm certificates (verifiable exports)
- 90-day history
- Optional monthly spend cap
Team
Fleet-scale, with false-discovery control.
50M committed events / mo
volume discounts beyond — talk to us
- 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.
One committed event is one data point accepted into a monitor. Drag to match your throughput.
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.