LangWatch
Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
Technical Profile & Specs
verified 2026-11-07
- Cost
- $0 / forever (Open Source)
- License
- Open Source
- Hosting Model
- Local (on your machine)
- Platforms
- desktopcross-platformone-click install
- Installation
- Clone https://github.com/langwatch/langwatch or deploy with Docker Compose
- Operational Setup
- Download the native package or installer for your operating system.
- Where Your Data Lives
- All application data lives locally on your own machine.
- The Catch / Trade-off
- Community-driven open source project without dedicated enterprise SLAs.
Replaces 7 paid apps
up to $245/mo ($2,940/yr) in subscriptions
LangWatch FAQ
Common questions
Is LangWatch free and open source?+
LangWatch is an open-source tool licensed under Open Source that runs on local. Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
What paid software does LangWatch replace?+
LangWatch serves as a free replacement for 7 paid SaaS applications: Arize, Braintrust, Galileo, Humanloop, LangSmith, Maxim, Weights and Biases, saving up to $245/month ($2,940/year) in subscription bills.
How do you install and set up LangWatch?+
Installation: Clone https://github.com/langwatch/langwatch or deploy with Docker Compose. Setup notes: Download the native package or installer for your operating system.
What is the catch or trade-off with LangWatch?+
Community-driven open source project without dedicated enterprise SLAs.