GrowthBook vs Flagsmith: Which Should You Choose in 2026?
Choosing between GrowthBook and Flagsmith comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
GrowthBook
Open-source feature flags and A/B testing
Best for you if:
- • You need product analytics features specifically
- • Open-source feature flags
- • Self-host for full control
Flagsmith
Open-source feature flag and remote config
Best for you if:
- • You want the higher-rated option (8.4/10 vs 8.2/10)
- • You need a/b testing features specifically
- • Flagsmith is an open-source feature flag platform for managing feature releases
- • It enables gradual rollouts, A/B testing, and remote config across all platforms
| At a Glance |  GrowthBook |  Flagsmith |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | Product Analytics | A/B Testing |
Rating | 82/100 | 84/100 |
| Feature | GrowthBook | Flagsmith |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Editorial Score | 82 | 84 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Product AnalyticsA/B Testing | A/B TestingCI/CD |
How GrowthBook and Flagsmith Compare
GrowthBook
Open-source feature flags and A/B testing
Free tier available · 82/100 score
Flagsmith
Open-source feature flag and remote config
Free tier available · 84/100 score
GrowthBook is a product analytics tool. Flagsmith is in a/b testing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: GrowthBook
Want the highest-rated option?
GrowthBook: 82/100. Flagsmith: 84/100.
Go with: Flagsmith
Value user reviews?
Neither has user reviews yet.
Go with: Flagsmith
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
GrowthBook is a product analytics tool. Flagsmith is in a/b testing. Pick the category that matches your needs.
How important are ratings?
Flagsmith scores higher: 84/100 vs 82/100.
Key Takeaways
Flagsmith
- Higher score: 84/100 vs 82
- Free tier available
- Our pick for this comparison
GrowthBook
- Better fit for product analytics
The Bottom Line
Flagsmith (84/100) is our pick.
Frequently Asked Questions
Is GrowthBook or Flagsmith better?
Flagsmith scores 84/100 in our evaluation. Both are freemium.
What are GrowthBook and Flagsmith used for?
GrowthBook: Open-source feature flags and A/B testing. Flagsmith: Open-source feature flag and remote config.
What does GrowthBook cost vs Flagsmith?
GrowthBook is freemium (free tier + paid plans). Flagsmith is freemium (free tier + paid plans). Visit their websites for detailed pricing.