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Tool Comparison

HELM

HELM

Stanford's holistic LLM benchmark — evaluate accuracy, fairness, bias, and efficiency together.

Free
VS
DeepEval

DeepEval

Pytest for LLMs — unit test your AI outputs with 20+ built-in evaluation metrics.

Open Source
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At a Glance

AttributeHELMDeepEval
License / PricingFreeOpen Source
Typeaiai
GitHub Stars
Rating4.3/54.5/5
Key Features6 listed6 listed
Integrations4 listed6 listed
Categories
LLM Evaluation
LLM Evaluation

Key Features

HELM

  • Holistic metrics: accuracy, calibration, robustness, fairness, bias, efficiency
  • 42 scenarios covering NLP, coding, reasoning, and knowledge tasks
  • Standardized prompting methodology for fair model comparison
  • Public leaderboard comparing GPT-4, Claude, Llama, Gemini, and more
  • Modular scenario and metric system for custom evaluations
  • Supports local models via HuggingFace and API models

DeepEval

  • Pytest-compatible — run with deepeval test run or pytest
  • 20+ metrics: correctness, hallucination, faithfulness, bias, toxicity
  • RAG-specific metrics: context relevancy, contextual recall, RAGAS
  • LLM-as-judge using GPT-4o or a custom evaluator model
  • Confident AI platform for evaluation result dashboards
  • Red teaming module for safety and jailbreak testing

Real-World Use Cases

HELM

Compare models for a regulated industry use case

Select HELM scenarios relevant to your domain (e.g. medical QA, legal reasoning)

DeepEval

Write unit tests for your LLM application

Define test cases with input, actual_output, and expected_output

Red team your LLM for safety issues

Use DeepEval's red teaming module to generate adversarial prompts

Integrations

HELM

huggingfaceopenaianthropicwandb

DeepEval

openaianthropiclangchainllamaindexragaslangfuse

🏆 Which should you choose?

Choose HELM if…

  • you want a managed or commercial offering with enterprise support and SLAs
Full HELM guide →

Choose DeepEval if…

  • you need a fully open-source, self-hosted solution with no vendor lock-in
Full DeepEval guide →