Arize AI
arize.com
#1
AI observability and evaluation platform to trace, evaluate and improve LLM agents in production, with an open-source Phoenix core.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $50/mo
Category · 22 tools verified
Best AI LLM Evaluation Tools of 2026
All 22 Llm Evaluation tools that are actually alive — cross-checked against multiple directories, liveness-verified, and ranked by real traffic. Dead links and clones removed. Verified means we checked — not that someone paid.
See the ranked list ↓22
TOOLS VERIFIED
16
FREE OPTIONS
7
WITH VIDEO REVIEWS
The ranked list
Showing 22 of 22 live tools · ranked by real traffic
Maxim AI
getmaxim.ai
#2
End-to-end evaluation and observability platform for building, testing, and monitoring AI agents and LLM apps.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $29/mo
Confident AI
confident-ai.com
#3
LLM evaluation and observability platform from DeepEval's makers for testing, tracing, red-teaming and governing AI applications.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $9.99/mo
Agenta
agenta.ai
#4
Open-source LLMOps platform uniting prompt management, evaluation and observability for teams shipping reliable LLM apps.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
honeyhive.ai
honeyhive.ai
#5
Observability and evaluation platform for production LLM agents, built on OpenTelemetry for tracing, monitoring and testing.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
Openlayer
openlayer.com
#6
AI governance and observability platform with 100+ automated tests and real-time guardrails to evaluate and monitor ML/LLM systems.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
LangWatch
langwatch.ai
#7
Platform to test, evaluate and observe LLM and voice AI agents, with prompt management and red-teaming for production.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
Athina AI
athina.ai
#8
Collaborative platform to build, evaluate and monitor LLM apps, with 50+ evals, prompt management and production tracing.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
Respan
keywordsai.co
#9
LLM engineering platform that routes calls through one gateway to 500+ models and adds tracing, evaluations and spend monitoring.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $199/mo
thisorthis.ai
thisorthis.ai
#10
AI model comparison platform for testing prompts and analyzing AI responses.
#LLM Ops Observability#AI Agents Infrastructure
Paid
EvalsOne
evalsone.com
#11
A platform for evaluating and optimizing generative AI applications.
#LLM Ops Observability#AI Agents Infrastructure
—
Inductor
inductor.ai
#12
A developer tool for LLM application quality and AI agents for commerce.
#LLM Ops Observability#AI Agents Infrastructure
—
VisibilityRadar scores brand visibility across 6 AI models and recommends strategies customized to each model's training data sources.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
Promptfoo
promptfoo.dev
#14
Open-source and enterprise platform for red-teaming, evaluating, and security-testing LLM apps, agents, and RAG pipelines.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium
Braintrust
braintrust.dev
#15
AI observability and evaluation platform for tracing LLM apps, running evals and catching quality regressions before release.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $249/mo
BenchLLM
benchllm.com
#16
Open-source Python tool to evaluate LLM apps with test suites, reports and a CI-friendly CLI, built by V7.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFree
Coxwave Align
impaction.ai
#17
Analytics and evaluation platform for gen-AI chat products, helping teams monitor, analyze and cut hallucinations.
#LLM Ops Observability#AI Agents Infrastructure
verifiedPaid
Langfuse
langfuse.com
#18
Open-source LLM engineering platform for tracing, prompt management and evaluation of AI apps and agents.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $29/mo
Triall
triall.ai
#19
Multi-model AI verification tool where frontier models independently answer, blind-critique each other, and return one vetted answer.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $7/mo
Align AI
tryalign.ai
#20
Analytics and evaluation platform for monitoring LLM chatbot conversations to reduce hallucinations and surface improvements.
#LLM Ops Observability#AI Agents Infrastructure
verifiedPaid
Ottic
ottic.ai
#21
Platform to evaluate and test LLM-powered applications for faster and reliable product releases.
#LLM Ops Observability#AI Agents Infrastructure
—
ProofWrite AI rewrites AI-generated text to sound more natural and verifies quality against common AI detectors like ZeroGPT and Winston AI.
#LLM Ops Observability#AI Agents Infrastructure
verifiedFreemium · from $9.99/mo
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LLM Evaluation tools compared
| Tool | Best for | Free tier | Price | Monthly visits |
|---|---|---|---|---|
| Arize AI | AI observability and evaluation platform to trace, evaluate and improve LLM agents in production, with an open-source Phoenix core. | Yes | $50/mo | 248K |
| Maxim AI | End-to-end evaluation and observability platform for building, testing, and monitoring AI agents and LLM apps. | Yes | $29/mo | 102K |
| Confident AI | LLM evaluation and observability platform from DeepEval's makers for testing, tracing, red-teaming and governing AI applications. | Yes | $9.99/mo | 102K |
| Agenta | Open-source LLMOps platform uniting prompt management, evaluation and observability for teams shipping reliable LLM apps. | Yes | Freemium | 34K |
| honeyhive.ai | Observability and evaluation platform for production LLM agents, built on OpenTelemetry for tracing, monitoring and testing. | Yes | Freemium | 24K |
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