Compare tools side by side · TechInTrends

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

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

Weights & Biases

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

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

Head to head

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

Optuna
MLflow
Weights & Biases
DVC