kitio.aiPostHog vs Weka
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Weka is completely free, while PostHog is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Product analytics
- Session replay
- Feature flags and experiments
- SQL data warehouse
- AI assistant
- Classification and regression
- Clustering
- Data preprocessing
- Visualization
- Experiment comparison
- Java API
| Feature | PostHog | Weka |
|---|---|---|
| Best for | Open-source product analytics suite with an AI assistant | Open-source Java workbench for machine learning and data mining |
| Category | Data & analytics | Data & analytics |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | PostHog | University of Waikato |
| Based in | United States | New Zealand |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
Weka is completely free, while PostHog is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- 1M analytics events/month
- 5K session recordings
- 1M feature flag requests
- 1 project, 1-year retention
Pay-as-you-go
Usage-based after free tier
- Unlimited usage
- 6 projects
- 7-year data retention
- Per-product billing limits
Enterprise
Contact sales
- Annual plans and volume discounts
- Platform features and onboarding help
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
PostHog
- Many tools in one product
- Large free monthly allowance
- Transparent pricing
- Interface can feel crowded
- Usage costs grow with traffic
Weka
- Free and open source
- Graphical interface for beginners
- Courses and a book to learn from
- Dated desktop interface
- Struggles with very large datasets
- Little support for deep learning
Which one should you choose?
Choose PostHog if you want:
- Many tools in one product
- Large free monthly allowance
- Transparent pricing
Watch out: interface can feel crowded.
Choose Weka if you want:
- Free and open source
- Graphical interface for beginners
- Courses and a book to learn from
Watch out: dated desktop interface.
PostHog vs Weka FAQ
What is the difference between PostHog and Weka?
PostHog: Open-source product analytics suite with an AI assistant. Weka: Open-source Java workbench for machine learning and data mining. Both are data & analytics tools.
Is PostHog or Weka cheaper?
Weka is completely free, while PostHog is freemium.
Do PostHog and Weka have free plans?
PostHog: Yes. Weka: Yes, fully free.
Who makes PostHog?
PostHog is made by PostHog, based in United States.
Who makes Weka?
Weka is made by University of Waikato, based in New Zealand.
Which should I choose, PostHog or Weka?
Choose PostHog if you value many tools in one product and large free monthly allowance. Choose Weka if you value free and open source and graphical interface for beginners.