A side-by-side of two evals & testing for building AI agents — live GitHub data, languages, and what each is best at.
Short answer: promptfoo leads Ragas vs promptfoo by community traction (★ 24k vs ★ 15k). Pick Ragas for RAG evaluation; pick promptfoo for prompt evals.
✓ Live data verified
| Ragas | promptfoo | |
|---|---|---|
| GitHub stars | ★ 15k | ★ 24k |
| Language | Python | TypeScript |
| Category | Evals & testing | Evals & testing |
| Best for | RAG evaluation | prompt evals |
| Repository | explodinggradients/ragas | promptfoo/promptfoo |
Ragas and promptfoo are both credible choices. By community traction, promptfoo leads (★ 24k). Pick Ragas for RAG evaluation; pick promptfoo for prompt evals.
Both are credible evals & testing. By community traction promptfoo leads (★ 24k). Pick Ragas for RAG evaluation; pick promptfoo for prompt evals.
Ragas is Evaluation toolkit for RAG pipelines — faithfulness, answer relevancy, and context metrics without ground truth.. promptfoo is Test-driven prompt and agent development — evals, red-teaming, and side-by-side model comparison from the CLI..
promptfoo has more — ★ 24k vs ★ 15k (live counts).
Often yes — many teams combine evals & testing. Check each tool's docs for interop; they solve overlapping but not identical problems.
Ragas is primarily Python; promptfoo is primarily TypeScript.
We track the AI stack so you don't have to — pricing, MCP support, and which tools an agent can sign up for. Free.