Directory / LangWatch
LangWatch
Verified
Observability and evaluation platform for LLM products.
LangWatch is a commercial (with open components) platform for monitoring and evaluating LLM applications: traces, quality, datasets. It competes with Langfuse/LangSmith on the product-analytics side of the factory.
- Model independence
- Multi-model
- Deployment
- Cloud, Self-hosted
- Open source
- Yes
- License
- See repository
- Pricing model
- Mixed
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
langwatch.ai · Docs · Source
Editorial take
LangWatch is another serious obs/eval product. Listed for completeness of the 2026 stack, not as a winner. Read the repo license. Not a coding agent.
Strengths
- Obs plus eval in one product.
- Public repo / self-host path exists.
- Model-agnostic.
Limitations
- Category glut; switching cost is instrumentation.
- License/cloud split.
- Will not merge the PR.