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README.md 2026-02-04 3.5 kB
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Release Highlights

Experiments

  • Post-Stratification - uses dimensions to reduce variance and get to statistical significance faster.
  • Result Filters - quickly narrow which metrics are visible by tag, group, or slice.
  • Result Drilldowns - view additional info by clicking on any row in the results table
  • Daily Participation Metrics - a new metric type that's analogous to Daily Active Users (DAU)
  • Fact Table Filtering - more flexible filtering UI when defining metrics
  • Query Performance - increased number of metrics that can be combined in a single SQL query, reducing warehouse costs.

Feature Flags

  • Nested Saved Groups - more powerful and composable targeting logic
  • Case Insensitive Targeting - match things like email addresses where case doesn't matter
  • OR Targeting Conditions - build complex targeting rules without using advanced mode
  • Feature Diagnostics - warehouse native tool to debug real world flag usage in your application
  • New Rust and Roku SDKs - use GrowthBook inside performance critical back-ends and on millions of TVs
  • Performance and UI Improvements - faster load times and snappier UX in the GrowthBook app when there are thousands of feature flags and large JSON values.

Other

  • Fix broken browser back button on many pages in the app
  • New API endpoints to manage experiment dashboards and custom fields
  • New Project Admin role to make it easier to manage a large distributed team
  • New Custom Hook option to only validate incremental changes
  • Kerberos auth support for Trino/Presto
  • Support additional AI models from Anthropic, Gemini, xAI, and Mistral
  • Option to auto-update metric slice values
  • UI improvements to data source page
  • Incremental refresh bug fixes and improvements
  • Product Analytics fixes and improvements

Plus many other bug fixes and performance improvements

Note: Internally, we migrated from yarn to pnpm. We included a small shim script for self-hosted users, so any Docker commands (e.g. yarn start) should continue working without modification unless you are doing something very custom and bespoke.

New Contributors

Plus a ton of returning contributors: @jdorn @ahdriel @royalfig @Kevin-Chant @mknowlton89 @lukesonnet @tzjames @madhuchavva @bryce-fitzsimons @msamper @itsgrimetime @august-growthbook @Hephaest @lukebrawleysmith @Auz @natasha-growthbook

Full Changelog: https://github.com/growthbook/growthbook/compare/v4.2.0...v4.3.0

Source: README.md, updated 2026-02-04