Weights & Biases
by W&BThe MLOps platform ML teams actually use — experiment tracking, model registry, and LLM evaluation
Experiment tracking, Weave (LLM eval), model registry, sweeps, artifacts, Reports, Tables
Last updated: March 29, 2026 · Pricing verified from official sources. Prices are subject to change by the provider.
Pricing
Price stable
Free TierYes — unlimited personal
Entry Plan$50/user/mo Team
Team Plan—
EnterpriseCustom pricing
API PricingSDK (Python)
See full API pricing & compare models →Prices exclude applicable taxes (VAT/GST/sales tax varies by region). Monthly prices shown — annual plans typically save 15-20%.
Specifications
Context / Input—
Max OutputML experiments, evaluations
ModalitiesText
Agent / AgenticNo
SecuritySOC 2
Self-hostedNo
Weights & Biases — Who Is It Best For?
ML teams, experiment tracking, LLM evaluation
Ideal for:Developersdata
✅ Strengths
• Free tier available
• SOC 2 certified
• Experiment tracking
💭 Consider
• Premium pricing ($50/mo)
• Cloud-only (no self-hosting)
• Enterprise plan may be required for teams
💡 Budget tip: Start with Weights & Biases's free tier to test it. Paid plans start at $50/mo. For a free alternative, check out LangSmith.
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Frequently Asked Questions
How much does Weights & Biases cost?
Weights & Biases offers a free tier. Paid plans start at $50/month. Enterprise pricing is available on request.
Is Weights & Biases free?
Yes, Weights & Biases offers a free tier with limited features. For full access, paid plans start at $50/month.
What is Weights & Biases best for?
Weights & Biases is best for ML teams, experiment tracking, LLM evaluation. Key features include: Experiment tracking, Weave (LLM eval), model registry, sweeps, artifacts, Reports, Tables.
Is Weights & Biases right for you?
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AiToolsMentor.com · Pricing verified March 29, 2026 · AI Tools Mentor Fit Score