DeepEval suits developers building repeatable evaluations for AI systems, especially those running tests in Python or CI/CD.
Free plan Open source From $200 a month WebWindowsMacLinuxAPISelf-hosted
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Best LLM Evaluation Tools 2026
Evaluating prompts and model responses can involve automated checks, human judgment, and safeguards, so the right mix depends on your development process. Compare custom metrics, safety evaluations, and LLM-as-a-judge with human review workflows and prompt versioning. CI/CD integration and deployment options offer further points of comparison for fitting evaluation into your work. Braintrust, Confident AI, and DeepEval are among the tools listed. Also weigh whether a free plan is available and the paid-from price, then consider which evaluation methods and workflow connections matter most for your team.
02
Maxim AI
It is designed for cross-functional AI teams, including product managers who want to define and analyze evaluations without code and developers who use SDKs, a CLI, or…
WebAPISelf-hosted Record5.3 Visit
03
Promptfoo
Promptfoo is for developers and enterprises building AI applications who need prompt evaluation or red-team testing.
WebWindowsMac+3 Record5.3 Visit
04
Giskard
It suits teams assessing conversational AI agents for safety and quality issues before production.
WebLinuxAPI+1 Record5.2 Visit
05
Braintrust
Braintrust is intended for teams running AI agents in production, from early-stage projects to enterprise deployments.
WebAPISelf-hosted Record5.0 Visit
6
Confident AI
WebAPISelf-hosted $200 a month Record4.9 Visit It is designed for engineers, QA teams, product managers, subject-matter experts, and annotators working on AI quality, evaluation, or production monitoring.
7
Arena (formerly Chatbot Arena)
WebAPISelf-hosted Free plan Record4.8 Visit Arena suits people who want to compare model responses or consult public leaderboards.
11
Galileo
WebAPISelf-hosted $100 a month, billed yearly Record4.5 Visit Galileo is designed for engineers, product managers, and subject matter experts building AI applications.
12
HELM
WebAPISelf-hosted Free plan Record4.5 Visit HELM suits teams and researchers who want an open-source framework for evaluating foundation models and can run it themselves.
13
OpenCompass
LinuxAPISelf-hosted Free plan Record4.5 Visit It is aimed at researchers and practitioners evaluating large language and vision-language models.
14
Parea AI
WebAPISelf-hosted $150 a month Record4.5 Visit Parea suits teams developing LLM applications that need evaluation, production observability, and human review.
15
PyRIT
WebLinuxAPI+1 Free plan Record4.5 Visit It suits security professionals and engineers evaluating generative AI behavior, safety, and data-leakage risks.
20
LM Evaluation Harness
LinuxAPISelf-hosted Free plan Record4.3 Visit It suits researchers, organizations, and developers evaluating language models with shared benchmarks or custom metrics.
24
Inspect AI
Browser extensionAPI Free plan Record3.9 Visit Inspect AI suits developers and teams evaluating language models or agents across varied tasks.
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