Compare · Lexis+ with Protégé
Lexis+ with Protégé alternatives for CPAs and tax practitioners
Lexis+ with Protégé, formerly Lexis+ AI, is LexisNexis’s legal AI for research, analysis and drafting, with Shepard’s citation checks and Practical Guidance. LexisNexis markets it to law firms and legal departments, and sells its tax research platform for CPA firms, Tolley+ with Protégé, separately. If you’re weighing an alternative for tax work, compare where answers come from, how you check them, where you can use them and how you pay. Here’s how Nylon and five other options compare, and when Lexis+ with Protégé is still the better fit.
Nylon vs Lexis+ with Protégé: the short answer
As of October 31, 2026, in US dollars. Details and sources below.
Lexis+ with Protégé
Nylon
Works in
Lexis+, Word, Outlook, Teams and other Microsoft 365 apps, plus a Copilot agent
Nylon, plus Claude, ChatGPT and Copilot (Adviser and Elite)
Contract
Online law-firm terms: committed term, then yearly renewal at the current rate plus 5%
Billed monthly, per user. Cancel anytime
Price
Quote only, scoped to organization size and content
$39–$199 per user a month + applicable sales tax
AI answers
Protégé grounds legal answers in LexisNexis sources, with Shepard’s Verify
Every answer cites and links the primary source
Library
Primary law, secondary sources, Practical Guidance, Shepard’s, your own documents
The IRC, Treasury Regulations, IRS guidance and Tax Court opinions
Choose Nylon for cited federal tax answers from the Internal Revenue Code, Treasury Regulations and IRS guidance, in the tools you already use. Keep Lexis+ with Protégé if your work spans broad legal research, and add Nylon alongside.
Each vendor’s own website is the source for its column.
Lexis+ with Protégé alternatives at a glance
What each product says about itself on its own website, as of October 31, 2026. Prices are in US dollars; sales tax may apply.
Nylon
Cited AI answers from federal tax law, in Nylon or your AI assistant
Yes, on every plan
$39, $99 or $199 per user a month
CCH AnswerConnect
CCH editorial content, Smart Charts and federal, state and local tax
Yes
AnswerConnect Tax $1,499 on the eStore; wider packages by quote
Thomson Reuters Checkpoint Edge
Editor-written commentary, PPC deskbooks and daily tax news
Yes, through CoCounsel, citing Checkpoint editorial content
Quote-based; CoCounsel Tax Essentials $1,300 per user a year
Blue J
Cited AI answers on federal tax and all 50 states
Yes
$1,498 per user a year (Individual)
ChatGPT
Drafting and analysis on any subject, where nobody needs to trace the source
Only with web search or deep research
Free; Plus $20 a month; Business from $20 per user a month
Your AI assistant, with Nylon connected
Cited tax answers inside Claude, ChatGPT or Copilot
Yes, through Nylon’s AI connector
Adviser or Elite seat, plus the assistant’s own plan
Why tax practitioners choose Nylon over Lexis+ with Protégé
Lexis+ with Protégé is strong for broad legal research, with Shepard’s and Practical Guidance. Nylon is built for cited federal tax answers from the primary sources, wherever you work.
Research inside your AI assistant
Adviser and Elite seats bring Nylon into Claude, ChatGPT and Microsoft Copilot, with every answer cited. LexisNexis runs Anthropic’s Claude legal plugins inside Lexis+ with Protégé, but its public pages don’t describe a connector that lets Claude or ChatGPT search Lexis content.
Built on federal tax law
Nylon answers from the Internal Revenue Code, Treasury Regulations, IRS guidance and U.S. Tax Court opinions, and links each citation to the source. LexisNexis markets Lexis+ with Protégé to law firms, corporate legal departments, government and academia, and sells its tax research platform for CPA firms, Tolley+ with Protégé, separately.
No minimum term
Nylon is billed monthly, per user, and you can cancel anytime, with no lock-in. Upgrades are prorated from the moment you switch. LexisNexis’s online terms for law firms don’t let you terminate during the committed term, except for an uncured material breach. The agreement then renews each year at the then-current rate plus 5%, unless you give 30 days’ written notice.
Per-user prices, published
Nylon publishes a per-user price for Starter, Adviser and Elite. Lexis+ with Protégé is quote-only: LexisNexis bases the price on your organization’s size, the capabilities you need and the content you access, and its law-firm terms ask you to keep pricing confidential.
1. Nylon
Nylon: cited AI answers from federal tax law
Nylon answers federal tax questions asked in plain English from the Internal Revenue Code, Treasury Regulations, IRS guidance and U.S. Tax Court opinions, and links every citation to the source.
Cited answers
Every answer links to the section, regulation, ruling or opinion it relies on.
Federal tax library
The Internal Revenue Code, Treasury Regulations, IRS Revenue Rulings, Revenue Procedures and Notices, and U.S. Tax Court opinions. State tax law isn’t covered.
Drafting and review
Draft advisory letters, research memos and tax opinions, or upload client documents such as returns, contracts and correspondence and ask what matters.
In your AI tools
Adviser and Elite seats include Nylon’s AI connector for Claude, ChatGPT and Microsoft Copilot.
Pricing
Starter $39, Adviser $99 and Elite $199 per user per month, + applicable sales tax. Billed monthly; cancel anytime. Book a demo to test Nylon on your own questions. Enterprise pricing on request.
Nylon
Can a business deduct the full cost of a client meal?
Generally no. The deduction for food and beverage expenses is limited to 50% of the cost [1], and the meal can’t be lavish or extravagant, and the taxpayer or an employee must be present [2].
1
Internal Revenue Code § 274(n)(1)
2
Internal Revenue Code § 274(k)(1)
Illustrative example
Nylon plans
From $39
Per user per month, + applicable sales tax. Billed monthly; cancel anytime.
Starter
$39
Adviser
$99
Elite
$199
Adviser and Elite add deep research and the AI connector. Lexis+ with Protégé is quote-only.
Nylon vs Lexis+ with Protégé, side by side
As of October 31, 2026. The Lexis+ with Protégé column comes from LexisNexis’s website.
Where you use it
The Lexis+ with Protégé web platform, plus Protégé in Microsoft 365: Word and Outlook (formerly Lexis Create+), Excel, PowerPoint, OneNote and Teams. Since June 2026, a Protégé agent is available in Microsoft 365 Copilot and Teams through Microsoft Marketplace. Claude’s legal plugins run inside Lexis+ with Protégé, but a connector that lets Claude or ChatGPT search Lexis content isn’t described on LexisNexis’s public pages.
Nylon on the web, and Claude, ChatGPT and Microsoft Copilot through the AI connector (Adviser and Elite).
Contract
LexisNexis’s online terms for law firms: you can’t terminate during the committed term except for an uncured material breach. The agreement then renews each year at the then-current monthly rate plus 5%, unless you give 30 days’ written notice. The terms also ask you to keep the agreement and its pricing confidential.
Billed monthly, per user. Cancel anytime, with no lock-in. Upgrades are prorated; downgrades take effect immediately.
Price
Quote only, based on organization size, capabilities and content scope. LexisNexis’s online store for law firms lists no price for Lexis+ with Protégé and asks you to call 888-AT-LEXIS.
$39, $99 or $199 per user a month, + applicable sales tax. Enterprise: quote.
AI answers
Protégé Legal AI grounds its responses in LexisNexis sources, with Shepard’s citations. Shepard’s Verify checks citations in AI responses, documents and drafts and flags unsupported statements. Protégé General AI adds models from OpenAI, Google and Anthropic: LexisNexis says not all of its responses are grounded in LexisNexis content, and caps its Deep Research at 25 conversations a month, using web sources only.
Unlimited AI research on every plan, plus deep research on Adviser and Elite. Every answer links each citation to the section, regulation, ruling or opinion it relies on.
What answers draw on
LexisNexis primary law, exclusive secondary sources, Practical Guidance across 25 practice areas, Shepard’s, and news and web sources, plus your own documents in Vaults or your DMS (iManage, SharePoint, NetDocuments).
Nylon’s library: the Internal Revenue Code, Treasury Regulations, IRS guidance (Revenue Rulings, Revenue Procedures, Notices) and U.S. Tax Court opinions.
Coverage
Legal research across practice areas. LexisNexis puts its federal, state, local and international tax research in Tolley+ with Protégé, a separate platform for tax professionals that launched in February 2026 as the successor to Lexis Tax, priced separately.
Federal tax only. Nylon doesn’t cover state tax law or non-tax legal research.
Expert commentary
Exclusive secondary sources, and Practical Guidance: expert-authored practice notes, annotated forms and drafting guidance across 25 practice areas.
No editorial commentary. Nylon answers from the primary sources.
Drafting and tools
Drafts in Word and Outlook through Protégé, with up to 50 Vaults of up to 500 documents each, and connections to iManage, SharePoint, NetDocuments and other DMS platforms.
Nylon drafts advisory letters, research memos and tax opinions, and reviews uploaded client documents.
Trial
2-day free trial.
Book a demo and test Nylon on your own questions.
What you gain with Nylon
Nylon inside Claude, ChatGPT and Microsoft Copilot (Adviser and Elite)
Answers from the IRC, Treasury Regulations, IRS guidance and Tax Court opinions
Monthly, per-user billing, with no minimum term
Published per-user prices for every self-serve plan
What you give up
Broad legal research, including Practical Guidance across 25 practice areas
Shepard’s citations and Shepard’s Verify checks
Protégé in Word, Outlook, Teams and other Microsoft 365 apps
Test Nylon on your own Lexis+ questions
Bring three tax questions you researched in Lexis+ with Protégé this month. In the demo, we’ll answer them in Nylon with every source linked.
Other Lexis+ with Protégé alternatives
Each summary comes from the product’s own website, as of October 31, 2026.
2
CCH AnswerConnect
Wolters Kluwer’s tax research platform: CCH editorial content updated daily, treatises, Smart Charts, calculators and practice aids, with Expert AI answers backed by citations and Document Analysis for returns and IRS notices.
Good for
Firms whose research runs on CCH commentary, or that prepare returns in CCH ProSystem fx Tax, ATX or TaxWise.
Pricing
AnswerConnect Tax is $1,499 on the Wolters Kluwer eStore, with tax calculated at checkout; the listing doesn’t state the number of users or the term. Wider packages: quote. Free 7-day trial, no credit card needed.
Consider it if
You want state, local or international tax content and editorial commentary more than broad legal research.
3
Thomson Reuters Checkpoint Edge
Thomson Reuters’ tax and accounting research platform: 12 million expert-authored content pieces with integrated primary sources, PPC deskbooks, daily news and analysis of new legislation within 24 hours. AI answers come through CoCounsel and cite selected Checkpoint editorial resources.
Good for
Firms that want editor-written commentary from another publisher, and links to UltraTax CS.
Pricing
Checkpoint Edge: quote. CoCounsel Tax Essentials: $1,300 per user a year for firms with up to 10 users, with up to 20 Checkpoint-backed answers per user a week and no access to the Checkpoint Edge library.
Consider it if
You want human-written commentary, state charts and tax news alongside AI answers.
4
Blue J
An AI tax research platform that answers from its own library of federal statutes, regulations, cases and IRS guidance, with inline citations, coverage for all 50 states and Tax Notes commentary.
Good for
Firms that want cited AI answers on federal and state tax in one tool.
Pricing
Individual $1,498 per user a year, on an annual term that renews automatically. Team and Enterprise: quote. 7-day free trial, no credit card needed.
Consider it if
You need state and local tax answers, which Nylon doesn’t cover.
5
ChatGPT
OpenAI’s general-purpose AI assistant. It answers from its training and, when it searches, the public web. OpenAI warns that web-search citations can be incomplete, outdated or incorrect, and says ChatGPT doesn’t replace a tax professional.
Good for
Drafting and analysis on any subject, where nobody needs to trace the source.
Pricing
Free; Go $8 and Plus $20 a month; Business $25 per user a month, or $20 billed annually (2-seat minimum).
Consider it if
You want one assistant for every task. Add Nylon’s AI connector so it can search Nylon’s library and cite the source.
6
Your AI assistant, with Nylon connected
Nylon’s read-only AI connector lets Claude, ChatGPT and Microsoft 365 Copilot search Nylon’s library and cite the source. Each person signs in with their own Nylon account, and admins can turn connections off for the organization.
Good for
Teams that already draft and research in an AI assistant.
Pricing
Included with Adviser and Elite seats at no extra cost. The assistant’s own plan still applies.
Consider it if
You want your assistant’s tax answers to link to a source you can open.
Which should you choose?
Match the tool to the work you do most.
If you want cited answers from federal tax law
Nylon
In Nylon or in Claude, ChatGPT and Copilot, billed monthly.
If your work spans broad legal research
Keep Lexis+, add Nylon
Keep Practical Guidance and Shepard’s, and use Nylon for tax questions. Nylon is billed monthly, so you can run both.
If you want tax commentary and tools
CCH AnswerConnect
CCH treatises, Smart Charts and calculators.
If you want another publisher’s commentary
Thomson Reuters Checkpoint Edge
Editor-written commentary, PPC deskbooks and daily tax news.
If you need state and local tax answers
Blue J
It covers all 50 states, alongside federal tax.
If you want one assistant for any task
ChatGPT
Free and paid plans. Add Nylon’s connector for cited tax answers.
Security your firm can check
Nylon holds ISO 27001 and ISO 42001 certification, and independent auditors have issued SOC 2 Type 1 and Type 2 reports.
Independently audited
SOC 2 Type 1 and Type 2 reports are available, and Nylon holds ISO 27001 and ISO 42001 certification.
Encrypted
All data that passes through Nylon is encrypted in transit and at rest.
Not used for training
Your questions and Nylon’s answers aren’t shared, and your inputs are never used to train AI models.
Admin controls
Every plan includes advanced organizational controls.
Baqir Hussein, FCCA · Founder & Director, Finex Chartered Certified Accountants, one of 2,000+ firms in Australia, New Zealand and the UK using Nylon
Lexis+ with Protégé alternatives: frequently asked questions
Questions about switching? Book a demo or email support@usenylon.com.
What is a good alternative to Lexis+ with Protégé for tax work?
For federal tax work, Nylon: it answers from the Internal Revenue Code, Treasury Regulations, IRS guidance and Tax Court opinions, links every answer to the source, works inside Claude, ChatGPT and Copilot (Adviser and Elite), and is billed monthly. For CCH commentary and practice tools, CCH AnswerConnect. For editor-written commentary from another publisher, Thomson Reuters Checkpoint Edge. For federal and state tax answers in one tool, Blue J. For broad legal research, Lexis+ with Protégé is still a strong choice.
Is Lexis+ with Protégé the same as Lexis+ AI?
Yes. LexisNexis renamed Lexis+ AI to Lexis+ with Protégé in February 2026. Protégé is the AI assistant inside it, and LexisNexis doesn’t sell Protégé as a standalone product.
Does Lexis+ with Protégé cover US federal tax?
As of October 31, 2026, LexisNexis describes Lexis+ with Protégé as a legal AI solution for research, analysis and drafting, for law firms, corporate legal departments, government and academia. LexisNexis sells tax research for CPA firms separately, in Tolley+ with Protégé, which launched in February 2026 as the successor to Lexis Tax. Nylon’s library covers the Internal Revenue Code, Treasury Regulations, IRS guidance and Tax Court opinions.
How does Lexis+ with Protégé pricing compare with Nylon?
As of October 31, 2026, Lexis+ with Protégé is quote-only: LexisNexis bases the price on your organization’s size, the capabilities you need and the content you access. Its online terms for law firms set a committed term, then renew each year at the then-current rate plus 5% unless you give 30 days’ written notice. Nylon costs $39, $99 or $199 per user a month + applicable sales tax, billed monthly, and you can cancel anytime.
Can I use Nylon alongside Lexis+ with Protégé?
Yes. Nylon is billed monthly, so you can keep Lexis+ with Protégé for broad legal research and use Nylon for tax questions.
Can I try Nylon before I buy?
Yes. Book a demo and we’ll answer your own tax questions in Nylon, with every source linked. Plans are billed monthly and you can cancel anytime. LexisNexis offers a 2-day free trial of Lexis+ with Protégé.
Can I use Nylon in ChatGPT, Claude or Copilot?
Yes, with an Adviser or Elite seat. Nylon’s AI connector lets those assistants search Nylon’s library and cite the source. The connector costs nothing extra; the assistant’s own plan still applies.
Is Nylon secure enough for client work?
Nylon holds ISO 27001 and ISO 42001 certification, and independent auditors have issued SOC 2 Type 1 and Type 2 reports. Data is encrypted in transit and at rest, and your inputs are never used to train AI models.
Keep exploring
Nylon for CPAs
Research, drafting and review for CPA firms.
Tax research benchmark
Six AI systems graded against expert answers, on tax questions from outside the US.
AI connectors
Nylon in Claude, ChatGPT and Copilot.
Plans
Starter, Adviser and Elite, billed monthly.
Information about other products comes from their own websites as of October 31, 2026 and can change. Prices are in US dollars. Lexis+, Protégé and Shepard’s are trademarks of LexisNexis. Other product names belong to their owners. Nylon isn’t affiliated with or endorsed by any of them. Spotted something out of date? Email support@usenylon.com.