Open-source, self-hosted AI observability platform for tracing, evaluating, and debugging LLM applications and agents.
11.9K1.2KPythonOtherUpdated 13 hours ago
1 alternative
Best open-source alternatives to LangSmith (2026)
Looking for a free, open-source alternative to LangSmith? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| Arize-ai/phoenix | ★ 11.9K | Other | 13 hours ago |
FAQ
- Is there a free, open-source alternative to LangSmith?
- Yes. The most popular open-source alternatives to LangSmith on Repolode are phoenix.
- Which LangSmith alternative should I choose?
- phoenix has the most GitHub stars and is released under Other. Compare the license and last commit of each option in the table above before choosing.