kitio.aiMetaflow vs Ragas
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Metaflow starts at Free and Ragas starts at Free. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Workflows in plain Python
- Automatic versioning
- One-command production deploy
- Cloud compute and GPUs
- Event-based triggers
- RAG quality metrics
- Agent evaluation
- Synthetic test generation
- Framework integrations
- CI-friendly runs
| Feature | Metaflow | Ragas |
|---|---|---|
| Best for | Open-source Python framework for ML and AI workflows | Open-source metrics and test data for evaluating RAG and agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free | Free |
| Starting price | Free | Free |
| Free plan | Yes, fully free | Yes, fully free |
| Made by | Outerbounds | Vibrant Labs |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Metaflow starts at Free and Ragas starts at Free. Check both pricing pages for current plans.
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
Metaflow
- Free and open source
- Same code runs locally and in production
- Tracks every step automatically
- Requires Python skills
- Cloud setup takes effort
Ragas
- Free and widely used
- Research-backed metrics
- Generates test data
- LLM-judge metrics cost tokens
- API changes between versions
- No hosted dashboard included
Which one should you choose?
Choose Metaflow if you want:
- Free and open source
- Same code runs locally and in production
- Tracks every step automatically
Watch out: requires python skills.
Choose Ragas if you want:
- Free and widely used
- Research-backed metrics
- Generates test data
Watch out: llm-judge metrics cost tokens.
Metaflow vs Ragas FAQ
What is the difference between Metaflow and Ragas?
Metaflow: Open-source Python framework for ML and AI workflows. Ragas: Open-source metrics and test data for evaluating RAG and agents. Both are models & apis tools.
Is Metaflow or Ragas cheaper?
Metaflow starts at Free and Ragas starts at Free. Check both pricing pages for current plans.
Do Metaflow and Ragas have free plans?
Metaflow: Yes, fully free. Ragas: Yes, fully free.
Who makes Metaflow?
Metaflow is made by Outerbounds.
Who makes Ragas?
Ragas is made by Vibrant Labs.
Which should I choose, Metaflow or Ragas?
Choose Metaflow if you value free and open source and same code runs locally and in production. Choose Ragas if you value free and widely used and research-backed metrics.