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SIDE-BY-SIDE · 2 OF 3
Two platforms.
Same questions.
Spellbook
ENTERPRISE SEARCH / PRODUCTIVITY
PROMPT
Law firm customers own all contract documents and legal inputs. Spellbook (Rally Legal) processes documents for AI contract review and drafting.
OUTPUT
Customers own all AI-generated contract language, suggestions, and redlines. Spellbook does not assert IP over outputs.
TRAINING
Unknown — cached spellbook-ai_tos.txt contains policy text in a single HTML line (line 362) exceeding the 25,000-token Read tool limit. Core IP and data use sections (1–12) are inaccessible. Sections 13.7–13.13 (dispute resolution, governing law: New York) were readable. Privacy file has same structure issue.
COMMERCIAL
Commercial use is fully permitted for legal practice and enterprise contract management.
177 verified findings across the displayed surfaces.
Westlaw AI (Thomson Reuters)
ENTERPRISE SEARCH / PRODUCTIVITY
PROMPT
Thomson Reuters customers own all legal research queries and documents. Westlaw AI processes inputs to deliver AI-enhanced legal research.
OUTPUT
Customers own all AI-generated legal research and outputs. Thomson Reuters does not assert IP over generated research.
TRAINING
Uncertain. The corporate Privacy Statement states user data including 'content of your queries on our Services, such as artificial intelligence prompts' may be used to 'operate, improve, or personalize our Services' and 'Develop new products, services, content.' Product-specific DPA terms for Westlaw/CoCounsel were not cached and could not be reviewed.
COMMERCIAL
Full commercial use is permitted for law firm and enterprise legal deployments.
252 verified findings across the displayed surfaces.
Empty Comparison Slot
AIRIN SUMMARY
Westlaw AI (Thomson Reuters) has moderate defaults; Spellbook carries the most permissive license terms of the set.FOR ENTERPRISE: SPELLBOOK NOT RECOMMENDED · WESTLAW AI (THOMSON REUTERS) ENTERPRISE TIER ACCEPTABLE
↳ Compliance surfaces · side by side
⚡ INTERACTIVE RISK COMPARISON HEATMAP
| RISK SURFACE | SPELLBOOK | WESTLAW AI (THOMSON REUTERS) |
|---|---|---|
| PPrompt Ownership | ||
| OOutput Ownership | ||
| TModel Training | ||
| CCommercial Use | ||
| DData Privacy | ||
| $Tier Differences |
* Click any cell in the heatmap matrix to scroll directly to its verbatim policy citations below.
📂 Intellectual Property & Model Training
P
SURFACE 01
Prompt Ownership
Spellbook
MED⚠ CAUTIONHIGH
Law firm customers own all contract documents and legal inputs. Spellbook (Rally Legal) processes documents for AI contract review and drafting.
“ (b) This Agreement does not grant Customer any intellectual property license or rights in or to the Spellbook AI Platform or any of its components, except to the limited extent that such rights are necessary for Customer's use of the Spellbook AI Platform as specifically au…”
Westlaw AI (Thomson Reuters)
MEDMED
Thomson Reuters customers own all legal research queries and documents. Westlaw AI processes inputs to deliver AI-enhanced legal research.
“ Personal information in content and communications uploaded, sent, shared, or inputted through our Services or via our networks and infrastructure, including feedback you provide to us and the content of communications between you and us or sent via our network and Services — in…”
O
SURFACE 02
Output Ownership
Spellbook
MEDHIGH
Customers own all AI-generated contract language, suggestions, and redlines. Spellbook does not assert IP over outputs.
“ 6.2. Feedback. ”
Westlaw AI (Thomson Reuters)
MED⚠ CAUTIONMED
Customers own all AI-generated legal research and outputs. Thomson Reuters does not assert IP over generated research.
“ All content provided on this site is owned by or licensed to Thomson Reuters and/or its affiliates (the "Thomson Reuters Content") and protected by United States and international copyright laws. Thomson Reuters and its licensors retain all proprietary rights to the Thomson Reut…”
T
SURFACE 03
Model Training
Spellbook
MED⚠ CAUTIONHIGH
Unknown — cached spellbook-ai_tos.txt contains policy text in a single HTML line (line 362) exceeding the 25,000-token Read tool limit. Core IP and data use sections (1–12) are inaccessible. Sections 13.7–13.13 (dispute resolution, governing law: New York) were readable. Privacy file has same structure issue.
“ (iv) No Third Party LLM Model Training. Customer Data transmitted to Third Party LLMs via the Spellbook AI Platform will not be used to train, improve, or develop the AI models of those Third Party LLMs. Accordingly, Spellbook will ensure that all Third Party LLMs are prohibited…”
Westlaw AI (Thomson Reuters)
MED
Uncertain. The corporate Privacy Statement states user data including 'content of your queries on our Services, such as artificial intelligence prompts' may be used to 'operate, improve, or personalize our Services' and 'Develop new products, services, content.' Product-specific DPA terms for Westlaw/CoCounsel were not cached and could not be reviewed.
No citation available
C
SURFACE 04
Commercial Use
Spellbook
MED⚠ CAUTIONHIGH
Commercial use is fully permitted for legal practice and enterprise contract management.
“ (i) reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code or underlying algorithms of the Spellbook AI Platform;”
Westlaw AI (Thomson Reuters)
HIGH⚠ CAUTIONMED
Full commercial use is permitted for law firm and enterprise legal deployments.
“Thomson Reuters grants you a limited license to access and make personal use of this site, subject to the Terms. This site and any portion hereof may not be reproduced, duplicated, copied, downloaded, sold, resold, visited, or otherwise exploited for any commercial purpose withou…”
Use is restricted to personal, non-commercial purposes only. Any commercial exploitation of site content or outputs requires explicit prior written consent from Thomson Reuters, which may be withheld.
📂 Data Privacy & Governance
D
SURFACE 05
Data Privacy
Spellbook
MED⚠ CAUTIONHIGH
—
“ (a) Spellbook collects and uses categories of Personal Data from the Customer and its Users that are required to administer Customer's Spellbook account, including payment records and credit cards. Otherwise, Spellbook only collects and uses Personal Data as necessary to pr…”
Westlaw AI (Thomson Reuters)
HIGH⚠ CAUTIONMED
Westlaw AI (including CoCounsel) is an enterprise subscription product. Separate Master Subscription Agreement and DPA would govern enterprise customers. Product-specific terms not cached.
“Demographic information Age; date of birth; marriage status; gender; physical characteristics; military status; political, religious, or philosophical beliefs; sexual orientation; racial or ethnic origin; and union membershi”
TR collects special categories of personal data under GDPR Article 9 (political beliefs, religious beliefs, sexual orientation, racial/ethnic origin, union membership), which require explicit legal bases and heightened protections.
$
SURFACE 06
Tier Differences
Spellbook
MED⚠ CAUTIONHIGH
—
“ (b) Spellbook reserves the right to discontinue or modify its provision of any Beta Features to the Customer at any time, with or without notice;”
Westlaw AI (Thomson Reuters)
MED
Westlaw AI (including CoCounsel) is an enterprise subscription product. Separate Master Subscription Agreement and DPA would govern enterprise customers. Product-specific terms not cached.
No citation available