# EleutherAI LM Evaluation Harness

Standard open framework for running hundreds of benchmarks (MMLU, GSM8K and more) against any LLM. EleutherAI LM Evaluation Harness is free, with no paid plan attached, at github.com.

## Facts

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

## Capabilities

- Standard open framework for running hundreds of benchmarks (MMLU, GSM8K and more) against any LLM
- Backs the Hugging Face Open LLM evaluations
- MIT licensed CLI and Python library

## FAQ

### What is EleutherAI LM Evaluation Harness?

EleutherAI LM Evaluation Harness is listed under LLM Eval & Observability, in the AI Models & Local Execution category on Flocci AI Tools. Standard open framework for running hundreds of benchmarks (MMLU, GSM8K and more) against any LLM. It is free, with no paid plan attached, and it lives at github.com.

### Is EleutherAI LM Evaluation Harness free?

EleutherAI LM Evaluation Harness 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 EleutherAI LM Evaluation Harness in a browser, or is there an app?

EleutherAI LM Evaluation Harness 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 EleutherAI LM Evaluation Harness do?

EleutherAI LM Evaluation Harness does 3 things the catalog singles out: Standard open framework for running hundreds of benchmarks (mmlu, gsm8k and more) against any llm; backs the hugging face open llm evaluations; mit licensed cli and python library.

### What is the best free alternative to EleutherAI LM Evaluation Harness?

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

## Related

- [EleutherAI LM Evaluation Harness alternatives](https://aitools.flocci.in/alternatives/eleutherai-lm-evaluation-harness)
- [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)
---

Source: Flocci AI Tools — https://aitools.flocci.in/tool/eleutherai-lm-evaluation-harness

Facts last verified: October 2026