Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Quote on request
Quote onlyQuote on request
Quote onlyWhat drives the bill
The metric that actually scales your invoice.
Quote-based, generally aimed at companies with a data team and a warehouse already in place.
Quote-based annual contracts priced by traffic volume.
Free tier
Free tier available for small teams.
No free tier; demo on request.
Open source
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
Eppo (Datadog) · since 2020
Established
AB Tasty · since 2009
Strengths
Limitations
Best for
Data-mature organisations where experiment results must withstand scrutiny.
European e-commerce and media companies with GDPR-driven vendor requirements.
All of these integrate with: Segment, Slack.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.