# DeepEval

Open-source LLM evaluation framework with pytest-style tests and 50+ metrics. DeepEval is free, with no paid plan attached, at github.com.

## Facts

- **Pricing tier:** Free
- **Works on:** CLI, Self-hosted
- **Works in browser:** No

## Capabilities

- Open-source LLM evaluation framework with pytest-style tests and 50+ metrics
- RAG, agent and conversational metrics; red-teaming module
- Apache-2.0; optional Confident AI cloud has a free tier

## FAQ

### What is DeepEval?

DeepEval is listed under LLM Eval & Observability, in the AI Models & Local Execution category on Flocci AI Tools. Open-source LLM evaluation framework with pytest-style tests and 50+ metrics. It is free, with no paid plan attached, and it lives at github.com.

### Is DeepEval free?

DeepEval is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.

### Can I use DeepEval in a browser, or is there an app?

DeepEval needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on the command line and self-hosting.

### What can DeepEval do?

DeepEval does 3 things the catalog singles out: Open-source llm evaluation framework with pytest-style tests and 50+ metrics; rag, agent and conversational metrics; red-teaming module; apache-2.0; optional confident ai cloud has a free tier.

### What is the best free alternative to DeepEval?

Arize Phoenix is the closest free alternative: it sits in the same LLM Eval & Observability sub-category and is free. Google Stax, Laminar and EleutherAI LM Evaluation Harness also start free. The full list is on the alternatives page.

## Related

- [DeepEval alternatives](https://aitools.flocci.in/alternatives/deepeval)
- [LLM Eval & Observability](https://aitools.flocci.in/category/ai-models-local-execution/llm-eval-observability)
- [Best free LLM evaluation and observability tools](https://aitools.flocci.in/best/best-llm-eval-observability)
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Source: Flocci AI Tools — https://aitools.flocci.in/tool/deepeval

Facts last verified: October 2026