Directory / LangWatch
LangWatch
Verified
LLM observability and evaluation platform with open components.
LangWatch is a commercial platform with open components for monitoring and evaluating LLM applications. It provides traces, quality measurements, and datasets in the same category as Langfuse and LangSmith.
- Model support
- 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
Assessment
LangWatch provides observability and evaluation for teams comparing hosted and self-hosted deployments. Review the repository license before relying on open components. Coding execution remains outside the product.
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.