kitio.aiRagas vs Evidently AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Ragas is completely free, while Evidently AI is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- RAG quality metrics
- Agent evaluation
- Synthetic test generation
- Framework integrations
- CI-friendly runs
- Built-in metric presets
- Data drift detection
- LLM-as-judge evals
- Interactive reports
- Cloud dashboards
| Feature | Ragas | Evidently AI |
|---|---|---|
| Best for | Open-source metrics and test data for evaluating RAG and agents | Open-source evaluation and monitoring for ML models and LLM apps |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free | Freemium |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | Yes |
| Made by | Vibrant Labs | Evidently AI |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Ragas is completely free, while Evidently AI is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
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
Ragas
- Free and widely used
- Research-backed metrics
- Generates test data
- LLM-judge metrics cost tokens
- API changes between versions
- No hosted dashboard included
Evidently AI
- Covers classic ML and LLMs
- Free open-source core
- Many ready-made tests
- Python-only library
- Cloud needed for team features
- Less agent tracing depth
Which one should you choose?
Choose Ragas if you want:
- Free and widely used
- Research-backed metrics
- Generates test data
Watch out: llm-judge metrics cost tokens.
Choose Evidently AI if you want:
- Covers classic ML and LLMs
- Free open-source core
- Many ready-made tests
Watch out: python-only library.
Ragas vs Evidently AI FAQ
What is the difference between Ragas and Evidently AI?
Ragas: Open-source metrics and test data for evaluating RAG and agents. Evidently AI: Open-source evaluation and monitoring for ML models and LLM apps. Both are models & apis tools.
Is Ragas or Evidently AI cheaper?
Ragas is completely free, while Evidently AI is freemium.
Do Ragas and Evidently AI have free plans?
Ragas: Yes, fully free. Evidently AI: Yes.
Who makes Ragas?
Ragas is made by Vibrant Labs.
Who makes Evidently AI?
Evidently AI is made by Evidently AI.
Which should I choose, Ragas or Evidently AI?
Choose Ragas if you value free and widely used and research-backed metrics. Choose Evidently AI if you value covers classic ml and llms and free open-source core.