Ragas vs Promptfoo
Side-by-side comparison from the Agent Observability Index: licensing, self-hosting, pricing model and integrations — no vendor copy, primary sources linked.
| Ragas | Promptfoo | |
|---|---|---|
| One-liner | The de-facto open-source metric library for RAG evaluation (faithfulness, context precision/recall), used standalone or inside other platforms. | Config-file-driven open-source CLI for prompt evals, regression testing and LLM red-teaming that runs in CI. |
| Category | Evals & Testing | Evals & Testing |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Pricing model | free | freemium |
| Pricing notes | Apache-2.0 OSS; hosted app in development by Exploding Gradients | CLI/library free (MIT); paid enterprise for red-teaming at scale |
| Frameworks | langchain, llamaindex, openai-sdk, haystack | openai-sdk, anthropic, langchain, ollama, vercel-ai |
| Funding / ownership | Y Combinator alum (Exploding Gradients) | $5M seed (a16z, 2024) |
How to choose
- Both link to primary pricing sources below — verify current tiers before committing; this market shifts monthly.