Compare tools side by side · TechInTrends

Kubernetes-native toolkit for ML pipelines, notebooks, training operators and model serving.

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.

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

Head to head

Metric	Kubeflow	MLflow	Weights & Biases	Optuna
Stars	16k	28.7k	11.3k	15k
Weekly downloads	n/a	5M	4.5M	3.2M
Download growth	n/a	+5%	+36%	-8%
Popularity score	77/100	82/100	78/100	78/100
Forks	2.7k	6.6k	914	1.5k
Open issues	1	2.2k	1k	26
Last commit	1mo ago	2d ago	2d ago	1w ago
Latest version	n/a	3.18.0Nov 3, 2026	0.31.0Oct 16, 2026	5.0.0Sep 7, 2026
License	Apache-2.0	Apache-2.0	MIT	MIT
First released	2017	2018	2017	2018
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. Not shown (no comparable download data): Kubeflow.

MLflow
Weights & Biases
Optuna