Open source AI engineering platform for debugging, evaluating, monitoring and optimizing agents, LLM apps and ML models.
28.5K6.5KPythonApache-2.0Updated 6 hours ago
2 alternatives
Best open-source alternatives to Weights & Biases (2026)
Looking for a free, open-source alternative to Weights & Biases? These 2 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 |
|---|---|---|---|
| mlflow/mlflow | ★ 28.5K | Apache-2.0 | 6 hours ago |
| comet-ml/opik | ★ 22.8K | Apache-2.0 | 5 hours ago |
Open-source LLM observability and evaluation platform for tracing AI agents, scoring LLM outputs, managing prompts, and monitoring production.
22.8K1.9KPythonApache-2.0Updated 5 hours ago
FAQ
- Is there a free, open-source alternative to Weights & Biases?
- Yes. The most popular open-source alternatives to Weights & Biases on Repolode are mlflow, opik.
- Which Weights & Biases alternative should I choose?
- mlflow has the most GitHub stars and is released under Apache-2.0. Compare the license and last commit of each option in the table above before choosing.