Optimizely vs PostHog: Which Should You Choose in 2026?
Choosing between Optimizely and PostHog 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Optimizely
Digital experience optimization platform
Best for you if:
- • You want the higher-rated option (8.8/10 vs 8.6/10)
PostHog
Open-source product analytics, session replay, and feature flags
Best for you if:
- • You want to try before committing
| At a Glance | ||
|---|---|---|
Price | Paid | Free + Paid |
Best For | Analytics | Analytics |
Rating | 88/100 | 86/100 |
| Feature | Optimizely | PostHog |
|---|---|---|
| Pricing Model | Paid | Freemium |
| Editorial Score | 88 | 86 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Analytics | AnalyticsDeveloper Tools |
Understanding the Differences
Both Optimizely and PostHog solve similar problems, but they approach them differently.Optimizely positions itself as "digital experience optimization platform" while PostHogfocuses on "open-source product analytics, session replay, and feature flags". These differences matter depending on what you're trying to accomplish.
When to Choose Optimizely
Optimizely makes sense if you're looking for a comprehensive paid solution. With a score of 88/100, it's our top pick in this comparison.
When to Choose PostHog
PostHog is worth considering if you need a flexible option with both free and paid tiers tool.
Who Should Use What?
Bootstrapped or small team?
PostHog won't cost you anything to start, which is exactly what early-stage teams need.
We'd pick: PostHog
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Optimizely handles scale better in our testing.
We'd pick: Optimizely
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Optimizely is built for organizations like yours.
We'd pick: Optimizely
Still not sure? Answer these 3 questions
How much can you spend?
Want to test first? PostHog has a free tier to get you started.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Optimizely higher (88/100). But the community has upvoted PostHog more (0 votes). Pick your source of truth.
Key Takeaways
What Optimizely Does Better
- Higher overall score (88/100)
- Our recommendation for most use cases
Consider PostHog If
- You want to start free and scale later
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Optimizely (88/100). But the honest answer is that "better" depends on your situation. Optimizely scores higher in our analysis, but PostHog might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Optimizely or PostHog better?
Based on our analysis, Optimizely scores higher with 88/100. Optimizely ispaid while PostHog is freemium. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Optimizely to PostHog easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Optimizely and PostHog offer free trials?
Most software in this category offers free trials or free tiers. Optimizely is paid with potential trial.PostHog is freemium with a free tier. Visit their websites for current trial offers.