Flagsmith vs Optimizely: Which Should You Choose in 2026?
Choosing between Flagsmith and Optimizely 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:
Flagsmith
Open-source feature flag and remote config
Best for you if:
- • You want to try before committing
- • 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
Optimizely
Digital experience optimization platform
Best for you if:
- • You want the higher-rated option (8.8/10 vs 8.4/10)
- • You need web analytics features specifically
- • A/B testing platform for teams
- • Feature flags control rollouts
| At a Glance |  Flagsmith |  Optimizely |
|---|---|---|
Price | Free + Paid | Paid |
Best For | A/B Testing | Web Analytics |
Rating | 84/100 | 88/100 |
| Feature | Flagsmith | Optimizely |
|---|---|---|
| Pricing Model | Freemium | Paid |
| Editorial Score | 84 | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | A/B TestingCI/CD | Web AnalyticsA/B Testing |
How Flagsmith and Optimizely Compare
Flagsmith
Open-source feature flag and remote config
Free tier available · 84/100 score
Optimizely
Digital experience optimization platform
Paid · 88/100 score
Flagsmith is a a/b testing tool. Optimizely is in web analytics.
Who Should Use What?
On a budget?
Flagsmith has a free tier. Optimizely is paid only.
Go with: Flagsmith
Want the highest-rated option?
Flagsmith: 84/100. Optimizely: 88/100.
Go with: Optimizely
Value user reviews?
Neither has user reviews yet.
Go with: Optimizely
3 Questions to Help You Decide
What's your budget?
Flagsmith is freemium. Optimizely is paid. Flagsmith lets you start free.
What's your use case?
Flagsmith is a a/b testing tool. Optimizely is in web analytics. Pick the category that matches your needs.
How important are ratings?
Optimizely scores higher: 88/100 vs 84/100.
Key Takeaways
Optimizely
- Higher score: 88/100 vs 84
- Our pick for this comparison
Flagsmith
- Has a free tier
- Better fit for a/b testing
The Bottom Line
Optimizely (88/100) is our pick. Flagsmith has a free tier if you want to test without paying.
Frequently Asked Questions
Is Flagsmith or Optimizely better?
Optimizely scores 88/100 in our evaluation. Flagsmith is freemium and Optimizely is paid.
What are Flagsmith and Optimizely used for?
Flagsmith: Open-source feature flag and remote config. Optimizely: Digital experience optimization platform.
What does Flagsmith cost vs Optimizely?
Flagsmith is freemium (free tier + paid plans). Optimizely is a paid tool. Visit their websites for detailed pricing.