Best LLM Evaluation Tools in 2026

Braintrust

Braintrust is aimed at teams operating AI agents in production, from early-stage teams to enterprises.

Arena (formerly Chatbot Arena)

It suits people who want to compare AI model responses or consult public rankings across task categories.

Giskard

Giskard suits teams evaluating conversational AI agents for security and quality issues before production.

Confident AI

It suits engineers, QA teams, product managers, subject-matter experts, and annotators responsible for AI quality and governance.

Promptfoo

It suits developers and enterprises evaluating prompts or testing AI applications for risks.

HELM

HELM suits teams and researchers needing self-hosted, reproducible model evaluation across capabilities and safety.

Maxim AI

It suits cross-functional AI teams that need to evaluate agents and monitor them in production.

Galileo

Galileo is designed for engineers, product managers and subject matter experts building AI applications.

garak suits teams and practitioners who want to scan language models for security and safety weaknesses.

It suits teams building production LLM applications that need evaluations, production observability, prompt testing, or human review.

It suits researchers and practitioners evaluating language and vision-language models.

It suits researchers, organizations, and developers comparing language models across standard or custom evaluations.

Security professionals and engineers evaluating generative AI behavior, safety, and data-leakage risks.

Inspect AI

Inspect AI suits developers and teams building or comparing language-model evaluations, agents, and safety checks.

LiveBench suits people comparing language models on objective tasks or running their own evaluations through supported API endpoints.

SWE-bench suits people evaluating language models on real software issues, particularly those able to set up Docker-based runs.