GrowthBook vs ConfigCat: Which is Better in 2026?
Choosing between GrowthBook and ConfigCat 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.
Bottom line: GrowthBook is our overall pick for feature flags workflows. Pick ConfigCat if you need a free tier to start with.
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:
- • Open-source feature flagging and experimentation platform that analyzes results directly in your data warehouse
- • Lightweight SDKs (9KB JS) evaluate flags locally with zero network requests for near-zero latency
ConfigCat
Feature flag and configuration management
Best for you if:
- • Feature flag service with unlimited seats, user targeting, and percentage rollouts for 30+ platforms
- • Free plan includes 5M config downloads/month, 10 flags, and unlimited team members
| At a Glance |  GrowthBook |  ConfigCat |
|---|---|---|
Starts at | $0/month/moStarter (Cloud) | Free tier + paid plansFree tier available |
Best For | Feature Flags | Feature Flags |
Rating | - | - |
Choose GrowthBook or ConfigCat?
Choose GrowthBook if
Open-source feature flags and A/B testing
- Warehouse-native approach means experiment data never leaves your infrastructure
- Generous free tier with unlimited flags, experiments, and traffic
- Open-source edition supports unlimited users at no cost
Choose ConfigCat if
Feature flag and configuration management
- Unlimited team seats on all plans including the free tier
- Straightforward usage-based pricing without per-seat charges
- SDKs for 30+ languages cover virtually any tech stack
| Feature | GrowthBook | ConfigCat |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.6/5 25 reviews | ★4.6/5 49 reviews |
| Categories | Feature FlagsA/B Testing | Feature FlagsDevOps |
In-Depth Analysis
GrowthBook
Open-source feature flags and A/B testing
Strengths
- +Warehouse-native approach means experiment data never leaves your infrastructure
- +Generous free tier with unlimited flags, experiments, and traffic
- +Open-source edition supports unlimited users at no cost
- +Ultra-lightweight SDKs with local evaluation keep latency near zero
- +Enterprise-grade statistics (CUPED, sequential, bandits) included in Pro plan
Weaknesses
- -Requires a data warehouse connection for experiment analysis, not plug-and-play
- -Free cloud plan limited to 3 users with no advanced statistics
- -Pro plan at $40/user/month can get expensive for large teams
- -Self-hosted deployment needs infrastructure expertise and ongoing maintenance
- -Visual editor and advanced testing features are only available on paid plans
Key features
ConfigCat
Feature flag and configuration management
Strengths
- +Unlimited team seats on all plans including the free tier
- +Straightforward usage-based pricing without per-seat charges
- +SDKs for 30+ languages cover virtually any tech stack
- +ISO 27001:2022 certified with GDPR compliance
- +Clean dashboard makes flag management accessible to non-technical users
Weaknesses
- -Free plan limited to 10 feature flags and 2 environments
- -No built-in analytics, requires integration with third-party tools
- -Enterprise plan starts at $900/month which may exceed small team budgets
- -Audit log retention is only 35 days on Pro and Smart plans
- -Limited A/B testing depth compared to dedicated experimentation platforms
Key features
Pricing: GrowthBook vs ConfigCat
| Plan | GrowthBook | ConfigCat |
|---|---|---|
| Tier 1 | $0/month Starter (Cloud) | N/A |
| Tier 2 | $40/user/month Pro (Cloud) | N/A |
| Tier 3 | Custom Enterprise (Cloud) | N/A |
| Tier 4 | $0 Open Source (Self-Hosted) | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on GrowthBook pricing and ConfigCat pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: GrowthBook
Want the highest-rated option?
Neither has user reviews yet.
Go with: GrowthBook
Value user reviews?
Neither has user reviews yet.
Go with: GrowthBook
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?
Both are feature flags tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
GrowthBook
- Free tier available
- Our pick for this comparison
ConfigCat
- Larger review base (49 reviews)
The Bottom Line
GrowthBook is our pick.
Frequently Asked Questions
Is GrowthBook or ConfigCat better?
GrowthBook is rated in our evaluation. Both are freemium.
What are GrowthBook and ConfigCat used for?
GrowthBook: Open-source feature flags and A/B testing. ConfigCat: Feature flag and configuration management.
What does GrowthBook cost vs ConfigCat?
GrowthBook is freemium (free tier + paid plans). ConfigCat is freemium (free tier + paid plans). Visit their websites for detailed pricing.