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DeepEval vs Ragas

A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
DE DeepEval Unit testing framework for LLM outputs VS RA Ragas Evaluation framework for retrieval-augmented generation
FeatureDeepEvalRagas
Deploy effortRead-the-docs projectRead-the-docs project
Health score95 · Excellent72 · Good
CategorySelf-Hosted AISelf-Hosted AI
LicenseApache-2.0Apache-2.0
LanguagePythonPython
Setup difficultyMediumMedium
Min. RAM1,024 MB1,024 MB
Deploymentsourcesource
GitHub stars★ 18,419★ 15,834
First released20232023
ReplacesLangSmith, BraintrustLangSmith

What are DeepEval and Ragas?

DeepEval

DeepEval is an open-source evaluation framework that brings unit-testing-style assertions to large language model outputs. It includes metrics for hallucination, relevancy, and bias and integrates with pytest for local CI.

  • Pytest-style LLM tests
  • 14+ built-in metrics
  • Synthetic dataset generation
  • CI/CD integration

Read the full DeepEval guide →

Ragas

Ragas is an open-source framework for evaluating retrieval-augmented generation pipelines. It provides metrics for faithfulness, answer relevancy, and context precision that can be run entirely on self-hosted infrastructure.

  • RAG-specific metrics
  • Synthetic test set generation
  • Framework agnostic
  • Local evaluation

Read the full Ragas guide →

DeepEval vs Ragas: key differences

Both projects are written in Python.

Why pick each one

Choose DeepEval if…

  • Pytest-style LLM tests
  • Rich metric library
  • Runs in CI

Watch out for

  • LLM judge token costs
  • Cloud platform upsell
DeepEval details

Choose Ragas if…

  • Research-backed metrics
  • Simple Python API
  • Framework integrations

Watch out for

  • Metrics need LLM calls
  • Frequent API changes
Ragas details

Frequently asked questions

Is DeepEval or Ragas better?

Neither is universally better. DeepEval has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are DeepEval and Ragas free and open-source?

Yes. DeepEval is licensed under Apache-2.0 and Ragas under Apache-2.0. Both can be self-hosted at no software cost.

Can I run DeepEval and Ragas with Docker?

DeepEval: check the project docs for container support. Ragas: check the project docs for container support.

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