What are the institutional and regulatory implications of this document?

1. REGULATORY LANDSCAPE: The MSA engages GDPR and CCPA in its treatment of customer data and usage information collected through the platform, given that customer-submitted data may include personal data of end users or employees processed through AI workflows. The FTC retains general jurisdiction over unfair or deceptive trade practices. The EU AI Act may require evaluation depending on how customers deploy W&B-tracked models in high-risk AI system contexts, though the MSA does not address EU …

How does Weights & Biases's Weights & Biases Terms of Service affect users?

The agreement establishes that disputes between customers and W&B must proceed through individual binding arbitration under AAA rules rather than court litigation or class proceedings, with a 30-day opt-out window available to new users. Under these terms, W&B's total liability for any claims is capped at the fees paid by the customer in the 12 months preceding the claim, excluding certain indemnification obligations. You can opt out of the arbitration clause by sending written notice to W&B wi…

How often is Weights & Biases's Weights & Biases Terms of Service updated?

ConductAtlas monitors this document daily and captures every version with cryptographic hashing and timestamp verification. Update frequency varies — see the change timeline on this page for complete version history.

Can I get alerted when Weights & Biases updates this document?

Yes. Monitor subscribers ($19/month) can add Weights & Biases to their watchlist and receive same-day email alerts whenever this document or any other Weights & Biases document changes.

CA-D-000495

Weights & Biases Terms of Service

Weights & Biases

Last change detected June 2, 2026 Terms of service

SHA-256: 2d618a45e09ef37ecd5… 7 versions captured 6 changes documented

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View original document at Weights & Biases ↗

This page describes what the document states, permits, or reserves. It does not constitute a legal determination about enforceability. Regulatory applicability may vary by jurisdiction. Methodology

9 Total

0 High severity

6 Medium severity

3 Low severity

Summary

The Weights & Biases Master Service Agreement governs customer access to the W&B AI developer platform, covering experiment tracking, model registry, model evaluation, and related machine learning infrastructure services. The agreement grants W&B a license to host, process, and transmit customer-submitted data including model artifacts, datasets, and experiment logs to deliver the services, while customers retain ownership of that data. The agreement also requires individual arbitration for most disputes and caps W&B's total liability to fees paid in the 12 months preceding the claim.

Technical / Legal Breakdown

This document is the Weights & Biases Master Service Agreement (MSA), governing access to and use of the W&B AI developer platform, including experiment tracking, model management, and related SaaS services, on a contractual basis between Weights and Biases, Inc. and its customers. The agreement states that customers retain ownership of their data submitted to the platform while granting W&B a license to host, process, and transmit that data to provide the services; the terms also authorize W&B to collect usage data and telemetry, and establish that customers are responsible for ensuring their use complies with applicable law. The agreement includes mutual confidentiality obligations, a limitation of liability capping W&B's exposure at fees paid in the prior 12 months, a mutual indemnification structure covering third-party intellectual property claims, and an arbitration clause requiring individual dispute resolution under AAA rules, with a 30-day opt-out window for new users. The agreement engages data protection frameworks including GDPR and CCPA given W&B's processing of customer data including potentially personal data of end users, and the AI-specific nature of the platform may require evaluation under emerging AI governance frameworks including the EU AI Act depending on customer use case and jurisdiction. Material compliance considerations include data processing agreement requirements for EU-based customers or customers processing EU personal data, the scope of the telemetry and usage data license, and the arbitration opt-out deadline.

Institutional Analysis

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Regulatory exposure by statute, material risk assessment, vendor due diligence action items, and enforcement precedent. Available on Compliance.

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6 important changes detected

7 versions captured · Last updated: June 2026

June 2, 2026

low

What changed The detected change involves removal of two product features from Weights & Biases' platform navigation menu: 'Agents' and 'Guardrails' have been removed from the publicly displayed product list. The updated terms document structure now omits these offerings from the platform overview section. This change reflects a narrowing of the stated product surface available to customers reviewing W&B's service offerings, though the master service agreement terms themselves remain substantively unchanged.

Why this matters This change reflects a modification to the public product menu displayed on W&B's website and terms documents. The 'Agents' and 'Guardrails' product categories have been removed from the listed offerings. This change does not alter the master service agreement terms, pricing, data handling practices, or user obligations. Customers with existing contracts referencing these products should verify whether those services remain available under their specific agreements.

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May 19, 2026

low

What changed Weights & Biases updated navigation and product naming on its website on May 19, 2026. The changes replaced 'CoreWeave Inference' with 'Serverless Inference' and updated internal product references. These are formatting and naming updates to the platform's public website navigation and do not modify the binding contractual terms of the Master Service Agreement.

Why this matters This change affects only the naming and presentation of W&B's product offerings on its website navigation. The underlying contractual terms, service agreements, and consumer rights remain unchanged. No modification to the Master Service Agreement or binding legal terms was detected.

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May 15, 2026 low

The detected change involves modifications to navigation and feature descriptions within Weights & Biases' Terms of Service document, primarily in the platform feature listings. The 'CoreWeave RL' section was reorganized …

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May 14, 2026 low

Weights & Biases updated their platform navigation on May 14, 2026 to include CoreWeave as a featured service partner in their inference and serverless RL offerings. The change adds CoreWeave …

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May 13, 2026 medium

Weights & Biases removed a sentence from their Terms of Service stating that services would no longer be accessible from certain locations starting September 1st, 2025. The updated document no …

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May 9, 2026 low

Weights & Biases updated their Terms of Service on May 9, 2026 to renumber several sections. The warranty disclaimer now references Section 10 instead of Section 9, and references to …

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Recent Provision Changes Jun 2, 2026

Added (6)

Mandatory Individual Arbitration and Class Action Waiver Medium

Introduction of mandatory arbitration replaces litigation rights and significantly limits customer ability to pursue class action claims against W&B.

Usage Data and Telemetry Collection Medium

Grants W&B broad rights to collect, analyze, and commercialize usage data and derived insights with minimal restrictions on how aggregated data can be used.

Mutual Confidentiality Obligations Low

Addition of mutual confidentiality obligations creates reciprocal duties between W&B and Customer regarding sensitive information.

Mutual IP Indemnification Medium

Introduction of mutual IP indemnification creates reciprocal obligations, with W&B defending Customer against IP infringement claims while Customer must defend W&B against similar claims.

Termination and Effect of Termination Medium

Provides specific termination rights for material breach with cure period and guarantees data export window, but permits W&B deletion of all customer data after 30 days.

Removed (7)

Customer Indemnification of W&B

Removal of unilateral customer indemnification obligation significantly reduces W&B's protection against claims related to customer data, misuse, and breaches.

W&B License to Use Customer Data

Replaced with more restrictive version that removes rights to 'maintain and improve' services and eliminates reference to Privacy Policy governance of data use.

Suspension and Termination Rights

Removal of W&B's unilateral immediate suspension rights (for AUP breach, non-payment, security risk) means W&B must now follow standard termination procedures with cure periods.

Intellectual Property Ownership

Removal of explicit statement that W&B owns improvements, modifications, derivative works, and customer feedback; this right may now be covered under the new mutual IP indemnification provision.

Data Processing Addendum Reference

Removal of explicit DPA incorporation may reduce customer protections regarding personal data processing and regulatory compliance obligations under GDPR and similar laws.

Modified (3)

Limitation of Liability Cap

Changed calculation basis from 'fees paid or payable' to 'total amount paid hereunder' and expanded excluded damages to explicitly include lost profits, loss of use, lost or inaccurate data, and business interruption.

Customer Data License Grant to W&B

Removed 'maintain and improve' rights, added explicit 'copy' and 'modify' rights, added restrictions against third-party sharing except for service provision or legal requirements, and removed reference to Privacy Policy.

Governing Law and Jurisdiction

Changed 'will be' to 'shall be', added 'Subject to the arbitration clause above' qualifier, and changed 'San Francisco, California' to 'San Francisco County, California'.

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Medium — 6 provisions

Mandatory Individual Arbitration and Class Action Waiver Compare →

The agreement requires that disputes between customers and W&B be resolved through individual binding arbitration administered by JAMS rather than through court litigation, and prohibits class or representative proceedings. Customers who wish to opt out may do so by providing written notice within 30 days of first accepting the agreement.

Added May 20, 2026 Standard Seen across 197 platforms
Limitation of Liability Cap Compare →

The agreement caps each party's total liability for claims arising under the agreement at the fees paid by the customer in the 12 months preceding the incident, and excludes lost profits, data loss, business interruption, and indirect or consequential damages from recoverable losses.

Added May 10, 2026 Standard Seen across 252 platforms
Customer Data License Grant to W&B Compare →

The agreement grants W&B a license to use, copy, store, transmit, modify, and display customer-submitted data, including model artifacts, experiment logs, and datasets, for the purpose of delivering the platform services. The license is stated as limited to service delivery and W&B states it will not use customer data for other purposes or share it with third parties except as required to provide the services or by law.

Added May 20, 2026 Standard Seen across 252 platforms
Usage Data and Telemetry Collection Compare →

The agreement authorizes W&B to collect usage statistics, performance data, and aggregated or anonymized data derived from customer data to operate and improve the services, and to use aggregated and anonymized data for broader business purposes including publication and benchmarking.

Added May 20, 2026 Standard Seen across 252 platforms
Mutual IP Indemnification Compare →

The agreement establishes mutual indemnification obligations in which W&B agrees to defend and indemnify customers against third-party IP claims arising from the services, while customers agree to defend and indemnify W&B against third-party IP claims arising from customer data or customer misuse of the services.

Added May 20, 2026 Common Seen across 162 platforms
Termination and Effect of Termination Compare →

The agreement permits either party to terminate for material breach with a 30-day cure period, and specifies that upon termination, customer access to the platform ends immediately and customer data is available for export for 30 days before W&B may delete it.

Added May 20, 2026 Standard Seen across 199 platforms

Low — 3 provisions

Mutual Confidentiality Obligations Compare →

The agreement establishes mutual confidentiality obligations requiring each party to protect the other's confidential information with at least reasonable care, use it only for purposes of performing under the agreement, and not disclose it to third parties without written consent.

Added May 20, 2026 Uncommon Seen across 23 platforms
Acceptable Use Policy Compare →

The agreement prohibits customers from reselling or sublicensing the platform, reverse engineering it, building competitive products using it, submitting unlawful content, violating third-party privacy rights through the platform, transmitting malicious code, or attempting unauthorized access.

Added May 20, 2026 Common Seen across 173 platforms
Governing Law and Jurisdiction Compare →

The agreement designates California law as governing and San Francisco County courts as the exclusive venue for disputes not subject to arbitration, without regard to conflict of laws rules.

Added April 30, 2026 Standard Seen across 217 platforms