Observability
LangWatch
Trace and evaluate AI applications, coding agents, and model usage.
5K GitHub starsAs of Checked
Where it fits
What you can use it for
Teams joining agent monitoring with evaluation workflows.
Trace agent runs, evaluate outputs and understand costs.
Before you adopt
What to check for your team
Apache-2.0 core and a separate enterprise extension. Check which edition provides the features you need.
Get help evaluating the fitLicence and scope
Apache-2.0 core
Core code is Apache-2.0 and SDKs are MIT. Enterprise capabilities require a commercial license in production; see enterprise/LICENSE.md.
Read the upstream licenceSupport the work
Go directly to the maintainers
Use the project's contribution guidance to report issues, help with documentation or contribute code. Follow any published funding links if you want to support the maintainers financially.
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