Split vs GrowthBook: Which is Better in 2026?
Choosing between Split and GrowthBook 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: Split wins this matchup. PostHog is our overall Feature Flags pick. PostHog is our free Feature Flags pick. Pick GrowthBook if you need a free tier to start with.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Split
Feature flags and experimentation platform
Best for you if:
- • You want feature flags platform
GrowthBook
Open-source feature flags and A/B testing
Best for you if:
- • You want a free tier before you commit
| At a Glance | Split | GrowthBook |
|---|---|---|
Starts at | Custom | Free Free plan |
Category | Feature Flags A/B Testing | Feature Flags A/B Testing |
Rating | 4.5/5 G2 4.6 · SourceForge 4.3 348 reviews | 4.6/5 G2 4.6 26 reviews |
Free plan | No | Yes |
Watch out for | Overage fees for MTKs beyond free tier | n/a |
Choose Split or GrowthBook?
Choose Split if
- You want feature flags platform
- You want good for experiments
Choose GrowthBook if
- You want a free tier before you commit
- You want warehouse-native approach means experiment data never leaves your infrastructure
- You want generous free tier with unlimited flags, experiments, and traffic
In-Depth Analysis
Split
Feature flags and experimentation platform
Split's pricing model is generous for small teams with a robust free tier offering 10 seats and 50K MTKs.
Watch out
Overage fees for MTKs beyond free tier
Strengths
- Pro: Feature flags platform
- Pro: Good for experiments
- Pro: Active development
- Pro: Good features
- Pro: Fair pricing
Weaknesses
- Con: Per-MTU pricing
- Con: Learning curve
- Con: Feature gaps
- Con: Better alternatives exist
- Con: Support varies
Key features
GrowthBook
Open-source feature flags and A/B testing
GrowthBook offers a very generous Starter tier at $0/month for up to 3 users, making it highly accessible for small teams.
Strengths
- Pro: Warehouse-native approach means experiment data never leaves your infrastructure
- Pro: Generous free tier with unlimited flags, experiments, and traffic
- Pro: Open-source edition supports unlimited users at no cost
- Pro: Ultra-lightweight SDKs with local evaluation keep latency near zero
- Pro: Enterprise-grade statistics (CUPED, sequential, bandits) included in Pro plan
Weaknesses
- Con: Requires a data warehouse connection for experiment analysis, not plug-and-play
- Con: Free cloud plan limited to 3 users with no advanced statistics
- Con: Pro plan at $40/user/month can get expensive for large teams
- Con: Self-hosted deployment needs infrastructure expertise and ongoing maintenance
- Con: Visual editor and advanced testing features are only available on paid plans
Key features
Pricing: Split vs GrowthBook
| Plan | Split | GrowthBook |
|---|---|---|
| Tier 1 | Free Free | $0/month Starter (Cloud) |
| Tier 2 | Custom Growth | $40/user/month Pro (Cloud) |
| Tier 3 | Custom Enterprise | Custom Enterprise (Cloud) |
| Tier 4 | N/A | $0 Open Source (Self-Hosted) |
Pricing verified from each vendor's public pricing page. Compare in detail on Split pricing and GrowthBook pricing.
Key Takeaways
Split
- Larger review base (348 reviews)
- Our pick for this comparison
GrowthBook
- Has a free tier
- Higher user rating: 4.6/5 vs 4.5/5
The Bottom Line
Split wins this matchup. PostHog is our overall Feature Flags pick. PostHog is our free Feature Flags pick. GrowthBook has a free tier if you want to test without paying.
Frequently Asked Questions
Is Split or GrowthBook better in 2026?
Split wins this matchup. PostHog is our overall Feature Flags pick. PostHog is our free Feature Flags pick. Pick Split for feature flags workflows (main strength: feature flags platform). Pick GrowthBook for feature flags workflows (main strength: warehouse-native approach means experiment data never leaves your infrastructure).
What are Split and GrowthBook used for?
Split: Feature flags and experimentation platform. GrowthBook: Open-source feature flags and A/B testing.
What does Split cost vs GrowthBook?
Split pricing is on their site. GrowthBook's paid plans start at Free (Pro (Cloud)).
What's the main difference between Split and GrowthBook?
Split's main strength: feature flags platform. GrowthBook's main strength: warehouse-native approach means experiment data never leaves your infrastructure.