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LangWatch logo

Evaluations

LangWatch

The harder your agents get, the more you need LangWatch.

LangWatch — the measurement layer for AI agents LangWatch is the open-core platform to test, evaluate, and monitor LLM agents end-to-end. Unlike tools that grade single LLM outputs, LangWatch is built for agent complexity multi-turn, multi-step, multi-agent systems where failure hides in the interactions. Killer feature: Scenario, our open-source framework that simulates full agent conversations, so you catch broken behavior before users do. Apache 2.0, self-hostable.

LangWatch screenshot 1

About LangWatch

LangWatch — the measurement layer for AI agents LangWatch is the open-core platform to test, evaluate, and monitor LLM agents end-to-end. Unlike tools that grade single LLM outputs, LangWatch is built for agent complexity multi-turn, multi-step, multi-agent systems where failure hides in the interactions. Killer feature: Scenario, our open-source framework that simulates full agent conversations, so you catch broken behavior before users do. Apache 2.0, self-hostable.

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Manouk Draisma avatar
Manouk DraismaMakerJul 1, 2026

Streamline your AI agent testing with LangWatch!

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Valid until Sep 1, 2026

Details

Builder
Manouk Draisma avatarManouk Draisma
Pricing
Freemium
Open source
Yes
Website
langwatch.ai
X / Twitter
@LangWatchAI
Tags
AIDeveloper Tools

Supporters

39
Nick Launches avatarAAlemzhan Amirov avatarHansje van der velden avatarJFunky Mind avatarFLEX Academy avatarDev Hanzo avatarAIDirectories avatarproveintech avatarAlex Kisin avatarHarrison Wallace avatar+27
Bonanza Narayan avatarManouk Draisma avatarSteve Tapley avatarTestinis avatarlove clear avatarKCThomas Bradley avatarAtze Hou avatarManouk avatarWelsenes Brothers avatarMBastien Youssfi avatarASeviq avatarUmar Iqbal avatarAura Tech avatarMUtsav Gupta avatarDKSebastian Czinna avatarCycore - avatarMr Ballaz avatarNicolas Lecocq avatarJulan Basnet avatarhakimuddin kika avatar

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