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Head-to-head · ML Experiment Tracking Software

Weights & Biases vs Comet

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Weights & Biases #1 in ML Experiment Tracking Software 8.9/10 Free plan · 30-day trial Free planFree trial✓ 1 of 5 features Try Weights & Biases
Comet #3 in ML Experiment Tracking Software 8.7/10 Free plan Free plan✓ 5 of 5 features Visit Comet

Weights & Biases leads on 0 checks, Comet on 1, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreWeights & Biases · 8.9/10
  • Lowest starting priceComet · $19/user/mo
  • Free planboth
  • Free trialonly Weights & Biases
  • Most featuresComet · 5 of 5

Weights & Biases scores higher on our rubric for ml experiment tracking software: 8.9 against 8.7 out of 10; our editors rank them #1 and #3.

Comet is cheaper to start at $19/user/mo against $60/user/mo.

Weights & Biases is the better fit for organizations needing a mature full ML platform. Comet is the better fit for teams prioritizing polished tracking and comparisons.

  • Weights & Biases fits best

    Organizations needing a mature full ML platform

  • Comet fits best

    Teams prioritizing polished tracking and comparisons

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.

Side by side

Feature Weights & Biases 8.9/10 Visit ↗ Comet 8.7/10 Visit ↗
At a glance
Editor score 8.9 8.7
Ranking #1 in ML Experiment Tracking Software #3 in ML Experiment Tracking Software
Best for Organizations needing a mature full ML platform Teams prioritizing polished tracking and comparisons
Pricing model Free plan + paid Free plan + paid
Starting price $60/mo $19/user/mo (best)
Free plan ✓ ✓
Free trial 30 days —
Deployment Cloud, Self-hosted, Browser extension Cloud, Self-hosted
Platforms Web, iOS Web
Support Email, Live chat, Community · 24/7 Email, Community, Docs, Phone
Compliance SOC 2, ISO 27001, GDPR, HIPAA, SSO/SAML SOC 2, ISO 27001, GDPR, HIPAA, SSO/SAML
Integrations 9 integrations 12 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Weights & Biases 1/5 · Comet 5/5
Run comparison Not checked yet ✓ (best)
Artifact tracking Not checked yet ✓ (best)
Dataset versioning Not checked yet ✓ (best)
Model registry ✓ ✓
API and SDK access Not checked yet ✓ (best)
Specs
Deployment options Not checked yet Hybrid
Our review
Pros
  • 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
  • Direct run comparison with metrics, parameters, code, and system information
  • Artifact lineage, dataset versioning, and a model registry in one platform
  • Hosted, API, and self-hosted deployment options with broad ML integrations
Cons
  • 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
  • Enterprise pricing is custom
  • Single sign-on, compliance, and dedicated SLAs are Enterprise features
  • Advanced collaboration and email support require the Pro plan
Our verdict

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…

Read the review →

Comet is a machine learning platform for data science teams and individual practitioners that records and analyzes training runs, metrics, parameters, visualizations, code, datasets, and other experiment outputs. Its core value is…

Read the review →
  1. Weights & BiasesML Experiment Tracking Software 8.9Free plan · 30-day trial
  2. CometML Experiment Tracking Software 8.7Free plan

Strengths and trade-offs

  • Weights & Biases — 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

  • Comet — where it wins

    • Direct run comparison with metrics, parameters, code, and system information
    • Artifact lineage, dataset versioning, and a model registry in one platform
    • Hosted, API, and self-hosted deployment options with broad ML integrations

    Where it doesn't

    • Enterprise pricing is custom
    • Single sign-on, compliance, and dedicated SLAs are Enterprise features
    • Advanced collaboration and email support require the Pro plan

More comparisons

All ML experiment tracking software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update