GrowthBook vs Flagsmith(2026)
GrowthBook is better for teams that need open source. Flagsmith is the stronger choice if open source (self-host free). GrowthBook is freemium (from $0 (self-hosted free)) and Flagsmith is open-source (from $45/month (cloud)).
Full feature breakdown, pricing details, and pros & cons below.
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GrowthBook
GrowthBook is an open-source platform for feature flags, A/B testing, and experimentation.
Starting at $0 (self-hosted free)
Visit GrowthBookFlagsmith
Flagsmith is an open source feature flag and remote configuration service with targeting, environments, and A/B testing.
Starting at $45/month (cloud)
Visit FlagsmithHow Do GrowthBook and Flagsmith Compare on Features?
| Feature | GrowthBook | Flagsmith |
|---|---|---|
| Pricing model | freemium | open-source |
| Starting price | $0 (self-hosted free) | $45/month (cloud) |
| Feature flags | ✓ | ✓ |
| A/B testing | ✓ | ✓ |
| Statistical analysis | ✓ | — |
| SDKs for all languages | ✓ | — |
| Self-hostable | ✓ | — |
| Visual editor | ✓ | — |
| Remote config | — | ✓ |
| User targeting | — | ✓ |
| Multi-environment | — | ✓ |
| SDKs for all platforms | — | ✓ |
GrowthBook Pros and Cons vs Flagsmith
GrowthBook
Flagsmith
Should You Use GrowthBook or Flagsmith?
Choose GrowthBook if…
- •Open source
- •Strong statistics engine
- •Self-hostable for free
Choose Flagsmith if…
- •Open source (self-host free)
- •Remote config built-in
- •Good free tier