Promptfoo vs Ragas: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Promptfoo and Ragas side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Promptfoo
Build secure AI applications with AI security testing integrated into your development workflow.
Best for you if:
- • You want LLM eval framework
Ragas
Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
Best for you if:
- • You want provides comprehensive evaluation for RAG applications component-wise and end-to-end
| At a Glance | Ragas | |
|---|---|---|
Starts at | Free plan, paid from $50/mo, billed monthly Cloud plan | Free plan |
Category | AI Agents Testing & QA | Testing & QA AI Observability |
Rating | n/a | n/a |
Free plan | Yes | Yes |
Watch out for | No public overage pricing for Cloud | n/a |
Choose Promptfoo or Ragas?
Choose Promptfoo if
- You want LLM eval framework
- You want open source
- You work in AI agents, not testing & QA
Choose Ragas if
- You want provides comprehensive evaluation for RAG applications component-wise and end-to-end
- You want simplifies the creation of evaluation datasets with synthetic data generation
- You work in testing & QA, not AI agents
In-Depth Analysis
Promptfoo
Build secure AI applications with AI security testing integrated into your development workflow.
The pricing for Promptfoo is very generous, especially with a robust free tier offering unlimited local evals and all features.
Watch out
No public overage pricing for Cloud
Strengths
- Pro: LLM eval framework
- Pro: Open source
- Pro: Good for testing prompts
- Pro: Active development
- Pro: Good documentation
Weaknesses
- Con: Learning curve
- Con: CLI focused
- Con: Newer tool
- Con: Limited features
- Con: Still maturing
Key features
Ragas
Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
Ragas offers a very generous 'Open-source' tier for free, providing core LLM evaluation and monitoring capabilities without any cost.
Strengths
- Pro: Provides comprehensive evaluation for RAG applications component-wise and end-to-end.
- Pro: Simplifies the creation of evaluation datasets with synthetic data generation.
- Pro: Offers continuous quality assurance for LLM applications in production.
- Pro: Integrates with popular LLM frameworks like LlamaIndex and LangChain.
- Pro: Recommended by industry leaders and integrated into key AI development tools.
Weaknesses
- Con: Requires technical expertise to implement and interpret evaluation results.
- Con: Focuses primarily on RAG systems, potentially less comprehensive for other LLM use cases.
- Con: Relies on LLM-based evaluation metrics, which can have their own biases or limitations.
Key features
Plans and prices: Promptfoo vs Ragas
| Tool | Plans and prices | Source |
|---|---|---|
| Promptfoo |
| promptfoo.dev/pricing read Oct 2, 2026 |
| Ragas |
| ragas.io read Oct 6, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Promptfoo pricing and Ragas pricing.
Key Takeaways
Promptfoo
- Choose if you want build secure AI applications with AI security testing integrated into your development workflow
Ragas
- Choose if you want evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Promptfoo starts at $50/mo, billed monthly; Ragas has no public paid plan price on file.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Promptfoo and Ragas compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Promptfoo starts at $50/mo, billed monthly; Ragas has no public paid plan price on file. Both have a free plan.
What are Promptfoo and Ragas used for?
Promptfoo: Build secure AI applications with AI security testing integrated into your development workflow. Ragas: Evaluate and monitor the quality of your LLM applications with automatic metrics and synthetic data.
What does Promptfoo cost vs Ragas?
Promptfoo's cheapest paid plan is Cloud at $50/mo, billed monthly; it also has a free plan. Ragas has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 6, 2026.
What's the main difference between Promptfoo and Ragas?
Promptfoo's main strength: LLM eval framework. Ragas's main strength: provides comprehensive evaluation for RAG applications component-wise and end-to-end.