📖 The AI Tool Bible

Best AI tools for evals datasets

10 tools in the Evaluation category, filtered to evals datasets.

All Evaluation

Braintrust

Featured
Evaluation · Platform (any LLM)
8.9

Eval, monitor, and improve AI products end-to-end.

Freemium· Free up to 1k events/day; team from $249/moevalsmonitoring

LangSmith

Evaluation · Platform (any LLM)
8.7

LangChain's eval + observability platform.

Freemium· Free starter; Plus $39/mo per seatLLM tracingevals

Humanloop

Evaluation · Platform (any LLM)
8.2

Prompt management + evals for collaborative AI teams.

Paid· From $200/mo teamprompt managementteam collab

Patronus

Evaluation · Platform (any LLM)
7.8

Automated LLM evaluation for hallucinations, safety, and quality.

Paid· Enterprise / contact saleshallucination detectionsafety

CompassRank

Evaluation · Multi-model

Public leaderboard from the OpenCompass project ranking open and closed LLMs across 100+ benchmarks.

Free· Free leaderboard; OpenCompass toolkit is Apache 2.0 open sourcellm-benchmarkingmodel-selection

Inspect AI

Evaluation · Multi-model

Open-source LLM evaluation framework from the UK AI Security Institute with 200+ built-in benchmarks.

Free· Free and open source (MIT-style license); you pay only for underlying model API usage.llm-benchmarkingagent-evaluation

Maxim AI

Evaluation · Multi-model

End-to-end evaluation, simulation, and observability platform for shipping production-grade AI agents.

Freemium· Free tier; 14-day trial on paid plans; custom enterprise pricingagent-evaluationllm-observability

OpenAI Evals

Evaluation · OpenAI GPT models (extensible)

OpenAI's open-source framework for benchmarking LLMs against a shared registry of evaluations.

Free· Free (MIT); you pay OpenAI API costs for eval runsllm-benchmarkingregression-testing

Promptfoo

Evaluation · Multi-model

Open-source eval and red-teaming framework for LLM apps, prompts, and RAG pipelines.

Freemium· Open-source free; Enterprise SaaS contact salesllm-evalsred-teaming

Respan (formerly Keywords AI)

Evaluation · Multi-model (500+ via gateway)

LLM engineering platform combining a multi-model gateway with tracing, evals, and prompt management.

Freemium· Free tier; paid plans (pricing not public); enterprise on requestllm-observabilityprompt-management