Compare tools side by side · TechInTrends

Weights & Biases

Hosted experiment tracking, sweeps, artifacts and Weave LLM tracing; owned by CoreWeave.

Open-source platform for experiment tracking, model registry and deployment, now with GenAI tracing and evals.

Define-by-run hyperparameter optimization framework with pruning and a dashboard.

Git-based data and model versioning with reproducible pipelines; now maintained by lakeFS (Treeverse).

Head to head

Metric	Weights & Biases	MLflow	Optuna	DVC
Stars	11.3k	28.7k	15k	16k
Weekly downloads	4.5M	5M	3.2M	373k
Download growth	+36%	+5%	-8%	+7%
Popularity score	78/100	82/100	78/100	72/100
Forks	914	6.6k	1.5k	1.3k
Open issues	1k	2.2k	26	225
Last commit	2d ago	2d ago	1w ago	5d ago
Latest version	0.31.0Oct 16, 2026	3.18.0Nov 3, 2026	5.0.0Sep 7, 2026	3.67.1Mar 31, 2026
License	MIT	Apache-2.0	MIT	Apache-2.0
First released	2017	2018	2018	2017
Signals	Popular	Popular	None	None
Listed in	AI & Machine Learning › MLOps & Experiment Tracking	AI & Machine Learning › MLOps & Experiment Tracking	AI & Machine Learning › MLOps & Experiment Tracking	AI & Machine Learning › MLOps & Experiment Tracking

Weekly downloads over time

Hover for exact values; switch to log scale for tools of very different sizes.

Weights & Biases
MLflow
Optuna
DVC