Ragas
The de-facto open-source metric library for RAG evaluation (faithfulness, context precision/recall), used standalone or inside other platforms.
| Category | Evals & Testing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | free |
| Pricing notes | Apache-2.0 OSS; hosted app in development by Exploding Gradients |
| Framework integrations | langchain, llamaindex, openai-sdk, haystack |
| Funding / ownership | Y Combinator alum (Exploding Gradients) |
Pricing/feature source: https://github.com/explodinggradients/ragas