Weights & Biases

Freemium#1 of 38 in ML Experiment Tracking SoftwareExperiment TrackingMLOps PlatformsData Version Control Tools+1 more

Weights & Biases: A broad ML platform that extends experiment tracking into production workflows. Ranked #1 of 38 in ML Experiment Tracking Software by our editors (8.9/10); pricing: Free plan · 30-day trial; best for organizations needing a mature full ML platform.

8.9/10★★★★☆Editor score

Try Weights & Biases

Weights & Biases8.9 Try Weights & Biases

At a glance

• Editor score
  8.9 / 10
• Pricing
  Free plan · 30-day trial
• Best for
  Organizations needing a mature full ML platform
• Free plan
  Yes
• Paid from
  $60/mo
• Founded
  2017 · San Francisco, California, United States
• Facts checked
  21 Sep 2026

• Where it wins

  • Covers tracking, sweeps, versioning, registry, serving, and monitoring
  • Supports managed, dedicated, and self-hosted deployment options
  • Integrates with PyTorch, TensorFlow, Hugging Face, and scikit-learn

• Where it doesn't

  • Pro starts at $60 per month when billed monthly
  • The Free plan includes community support rather than priority support
  • Its broad scope may exceed the needs of teams seeking tracking alone

Our verdict on Weights & Biases

Weights & Biases is an AI developer platform for machine-learning and AI teams working across development, training, evaluation, and production operations. Its core capabilities include experiment tracking and visualization, hyperparameter sweeps, dataset and model versioning, a centralized model registry, workflow automation, hosted inference, evaluation, monitoring, and deployment options. It is suited to individual developers, academic researchers, small teams, and enterprise organizations that need more than experiment logs.

The published plans show a freemium structure. Free includes AI application evaluations, AI application tracing, AI model experiment tracking, AI assets registry and lineage tracking, and community support. Pro costs $60 per month when billed monthly and adds unlimited teams, team-based access controls, service accounts, priority email and chat support, CI/CD automations, and Slack and email alerts. Enterprise adds options such as single-tenant deployment, HIPAA compliance, secure private connectivity, customer-managed encryption keys, single sign-on, and audit logs. Personal is a free plan with one user seat, experiment tracking, registry and lineage tracking, and Local W&B Server. Advanced Enterprise adds flexible deployment options and the ability to run W&B Server on your infrastructure.

Its main distinction is breadth: teams can connect model development with artifacts, registries, automated workflows, serving, evaluation, and monitoring in one product. Integrations include LangChain, LlamaIndex, PyTorch, Hugging Face Transformers, Lightning, TensorFlow, Keras, scikit-learn, and XGBoost. Web, iOS, API, and self-hosted access support different operating models. Organizations needing a mature full ML platform should consider it, particularly when deployment or governance matters alongside tracking. Teams that only need a narrow, low-cost experiment-tracking tool may prefer a simpler product, especially if $60 per month for Pro is outside their budget.

Your product? Our editors can test Weights & Biases in depth and publish a review, labelled as paid · from $149/mo →

Weights & Biases pricing

All 5 Weights & Biases plans and prices →

Weights & Biases fact sheet

Weights & Biases integrations

Weights & Biases lists 9 integrations on its own site.

• LangChain
• LlamaIndex
• PyTorch
• Hugging Face Transformers
• Lightning
• TensorFlow
• Keras
• scikit-learn
• XGBoost

Alternatives to Weights & Biases

• ClearMLA broad MLOps platform with experiment tracking, data versioning, orchestration, and serving.8.8
• CometA polished experiment tracking platform with strong comparison, lineage, and registry tools.8.7
• Amazon SageMaker ExperimentsA strong fit for AWS-native teams that need tracking, comparison, artifacts, and MLflow.8.6

See all Weights & Biases alternatives →

Weights & Biases vs the competition

• Weights & Biases vs ClearML
• Weights & Biases vs Comet
• Weights & Biases vs Amazon SageMaker Experiments
• Weights & Biases vs Databricks Mosaic AI
• Weights & Biases vs Valohai
• Weights & Biases vs Hopsworks AI Lakehouse

Compare Weights & Biases with any tool side by side →

Featured on iTechGuides

Weights & Biases is listed in our ML Experiment Tracking Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/weights-biases/"><img src="https://www.itechguides.com/best/badge/weights-biases.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update