Ragas vs Promptfoo: Which is Better in 2026?
Choosing between Ragas and Promptfoo 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:
Ragas
Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
Best for you if:
- • You need testing & QA features specifically
- • Evaluates LLM applications, especially RAG systems, using automatic metrics.
- • Generates synthetic evaluation data customized for specific LLM requirements.
Promptfoo
Build secure AI applications with AI security testing integrated into your development workflow.
Best for you if:
- • You need security features specifically
- • Integrates AI security testing into CI/CD and development workflows.
- • Automates context-aware attack generation and provides real-time threat intelligence.
| At a Glance |  Ragas | |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Testing & QA | Security |
Rating | - | 4.8/5 |
Free plan | Yes | Yes |
Choose Ragas or Promptfoo?
Choose Ragas if
Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
- Provides comprehensive evaluation for RAG applications component-wise and end-to-end.
- Simplifies the creation of evaluation datasets with synthetic data generation.
- Offers continuous quality assurance for LLM applications in production.
- Your work is testing & QA-shaped, not security-shaped
Choose Promptfoo if
Build secure AI applications with AI security testing integrated into your development workflow.
- LLM eval framework
- Open source
- Good for testing prompts
- Your work is security-shaped, not testing & QA-shaped
| Feature | Ragas | Promptfoo |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | ★4.8/5 49 reviews |
| Categories | Testing & QAAI Observability | SecurityTesting & QA |
In-Depth Analysis
Ragas
Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
Strengths
- +Provides comprehensive evaluation for RAG applications component-wise and end-to-end.
- +Simplifies the creation of evaluation datasets with synthetic data generation.
- +Offers continuous quality assurance for LLM applications in production.
- +Integrates with popular LLM frameworks like LlamaIndex and LangChain.
- +Recommended by industry leaders and integrated into key AI development tools.
Weaknesses
- -Requires technical expertise to implement and interpret evaluation results.
- -Focuses primarily on RAG systems, potentially less comprehensive for other LLM use cases.
- -Relies on LLM-based evaluation metrics, which can have their own biases or limitations.
Key features
Promptfoo
Build secure AI applications with AI security testing integrated into your development workflow.
Strengths
- +LLM eval framework
- +Open source
- +Good for testing prompts
- +Active development
- +Good documentation
Weaknesses
- -Learning curve
- -CLI focused
- -Newer tool
- -Limited features
- -Still maturing
Key features
Pricing: Ragas vs Promptfoo
| Plan | Ragas | Promptfoo |
|---|---|---|
| Tier 1 | Free Open-source | Free Free |
| Tier 2 | Contact us Enterprise | $50 month Cloud |
| Tier 3 | N/A | custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Ragas pricing and Promptfoo pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Ragas
Want the highest-rated option?
Promptfoo is rated 4.8/5. Ragas has no ratings yet.
Go with: Promptfoo
Value user reviews?
Ragas: no ratings yet. Promptfoo: 49 reviews (4.8/5).
Go with: Promptfoo
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Ragas is a testing & QA tool. Promptfoo is in security. Pick the category that matches your needs.
How important are ratings?
Promptfoo is rated 4.8/5; Ragas has no ratings yet.
Key Takeaways
Promptfoo
- Free tier available
- Our pick for this comparison
Ragas
- Better fit for testing & QA
The Bottom Line
Promptfoo is our pick.
Frequently Asked Questions
Is Ragas or Promptfoo better?
Promptfoo is rated in our evaluation. Both are freemium.
What are Ragas and Promptfoo used for?
Ragas: Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.. Promptfoo: Build secure AI applications with AI security testing integrated into your development workflow..
What does Ragas cost vs Promptfoo?
Ragas is freemium (free tier + paid plans). Promptfoo is freemium (free tier + paid plans). Visit their websites for detailed pricing.