Spellbook vs LexisNexis Lexis+ with Protégé: contract suite or research AI

Spellbook vs Lexis+ with Protégé at a glance

Gavel Exec is the labeled third option in the last column.

What you are buying: a contract suite or a research platform

Spellbook sells one thing, contract work. Its homepage tagline reads "The complete contract AI suite," it counts more than 5,000 legal teams as users, and it lists six products: Review, Draft, Ask, Playbooks, Compare and Associate. The Word add-in is the core of the suite, and Associate is its agent for multi-document projects.

Lexis+ with Protégé is LexisNexis' legal AI platform, billed as "Legal AI, built on authority." LexisNexis renamed it from Lexis+ AI in February 2026, and one web workspace covers research, drafting and analysis. Protégé is the assistant inside it, and LexisNexis says Protégé "is not available as a standalone product."

The difference shows up on the invoice. A Spellbook license buys contract tools, with public sources as the only legal content. A Lexis+ with Protégé subscription buys a research library with a drafting assistant on top, so a deal lawyer who never cites a case pays for a research library they may rarely open. Spellbook's own LexisNexis pricing guide concedes the overlap is small: "Most teams that handle both research and contracts run both."

Legal content and citation checks: public sources or LexisNexis with Shepard's

For anything that depends on current law, LexisNexis is far stronger. Protégé answers are grounded in LexisNexis primary law and secondary sources, and the product page promises "expert-authored practice notes, annotated forms, and drafting guidance across 25 practice areas" from Practical Guidance. Shepard's, the LexisNexis citator, lets you "Validate citations and confirm the status and treatment of authorities directly within your research and drafting workflow."

In May 2026 LexisNexis added Shepard's Verify Trust Markers, which check the citations in a draft against LexisNexis sources and flag any that cannot be verified as existing. LawSites noted that this confirms an authority exists and can be retrieved, a narrower test than confirming it supports the point it is cited for.

Spellbook's Ask is a research helper for contract lawyers. The help center lists what Ask can search: United States sources such as Cornell Law, CourtListener, Case.law, Justia and GovInfo, Canadian sources such as CanLII, the worldwide Legal Information Institute sites, EUR-Lex, and national legislation portals in Europe and Latin America. You can restrict Ask to those sources so it stays off the general web. The list contains no LexisNexis or Westlaw content, and the article describes no citator.

A commercial lawyer checking a state non-compete statute will often get what they need from Ask. A lawyer who signs an opinion letter or a brief needs Shepard's.

Drafting in Word: one add-in or Lexis+ plus Lexis Create+

Spellbook does its work inside the document. The add-in redlines the open contract with tracked changes attributed to you, drafts clauses or whole agreements from scratch or from precedent, and keeps a Clause Library. Spellbook says it works in more than 140 languages.

LexisNexis splits the job across two products. In Lexis+ with Protégé the drafting happens on the web: Protégé can "Generate complete motions, briefs, agreements, and contracts from uploaded materials," proposes a multi-step plan for you to approve before it runs, and exports the draft to Word. Work inside Word and Outlook belongs to Lexis Create+, which LexisNexis describes as embedded within Microsoft 365 and built partly on technology from Henchman, acquired in 2024.

Lexis Create+ is aimed at the same desk as Spellbook. LexisNexis' March 2026 spotlight for transactional attorneys lists drafting from prior agreements in your document management system (DMS), Practical Guidance Playbooks, a Compliance Checker, proofreading for inconsistencies and definition issues, and shared Libraries of approved clauses. Its product page offers a demo in place of a trial and does not say whether a Lexis+ with Protégé subscription includes it, so ask before you compare quotes.

For a pure transactional team, Spellbook is the simpler purchase: one add-in, one license, one trial. For a firm already paying LexisNexis, Create+ adds contract tools to an existing relationship.

Playbooks and clause standards: your positions or LexisNexis guidance

Spellbook's playbooks are your rules. Every rule carries the language you prefer, your fallbacks and the conditions that should trigger a flag; Spellbook supplies starter playbooks and can build a playbook from one model agreement. When a review runs, replacement language arrives as tracked changes under your name. For market context, Compare to Market draws on thousands of similar agreements, free if you contribute anonymized data and for a fee if you keep yours out.

LexisNexis starts from editorial content. Practical Guidance Playbooks in Lexis Create+ give "clause-level guidance and expert insights," so the yardstick is what LexisNexis' practitioner authors consider standard. Lexis Create+ can also benchmark a clause "against trusted precedent within your database," so the comparison set is your firm's own past documents.

The trade-off: Spellbook gives a negotiating team more control over fallback positions and applies them as redlines. LexisNexis gives a generalist an expert view of a clause they rarely see, with citations to the guidance behind it.

Document sets and DMS connections: Associate or Vault

LexisNexis publishes the bigger numbers and names NetDocuments among its connectors. Lexis+ with Protégé can "Connect to iManage, SharePoint, NetDocuments, and other DMS platforms to ask and draft from your organization's knowledge." Its May 2026 release says a Vault now holds up to 100,000 documents, although the product page FAQ still says up to 50 Vaults of 1 to 500 documents each, so ask which limit applies to your plan. For Lexis Create+, LexisNexis states that it keeps no live connection to your DMS and retrieves updates periodically.

Spellbook's Associate is organized around deal tasks. Spellbook says the agent plans and executes projects across many documents; its examples include data room reviews, disclosure schedules and financing documents, and one instruction can revise a whole set. The iManage integration respects existing permissions and ethical walls, and the homepage also lists SharePoint, OneDrive, Google Drive and Dropbox.

Pricing: two vendors, no public per-user number

Neither product page shows a price. LexisNexis says "Lexis+ with Protégé pricing varies based on factors such as the size of your organization," and its small-firm page tells firms of 1 to 3 attorneys they can see costs and purchase through the LexisNexis Online Store. When we opened the store on November 12, 2026, the Lexis+ with Protégé listing described the plan as all of Lexis+ plus generative AI and gave a phone number in place of a dollar figure.

Spellbook's pricing page ties the price to the headcount on your license and sends buyers to a demo. Gavel customers who received a quote report about $350 per user per month.

Spellbook's LexisNexis pricing guide, last updated August 5, 2026, lists Lexis+ with Protégé as "Pricing on request" and repeats third-party estimates of $128 to $494 per user per month for the full bundle. LexisNexis has not published those figures and they appear on a competitor's page, so use them only as a prompt to request a written quote.

Trials: 7 days against 2 days

Spellbook's trial is the easier one to use well. It lasts 7 days and starts from the website, and the help center says a trial started there lapses by itself with nothing charged.

LexisNexis offers a 2-day free trial of Lexis+ with Protégé through a sign-up form that asks for firm name, work email and phone. Two days covers a handful of research questions and one draft, so prepare the test matter before you submit the form.

Security, AI models and your data

Both vendors answer the main procurement questions in public. On its security page Spellbook reports that it is SOC 2 Type II compliant, that its zero data retention (ZDR) agreements mean neither OpenAI nor Anthropic retains customer data, and that Canadian and United States data centers store and process customer data.

LexisNexis states, "We never use customer data to train AI models and maintain robust data retention and deletion policies." Its Trust Center lists a SOC 2 Type 2 report covering Lexis+ with Protégé and a separate one for Lexis Create+, includes ISO/IEC 27001 among its listed certifications, and says data is encrypted in transit and at rest. Since May 2026 enterprise and government customers can also hold their own encryption keys, an option LexisNexis says is deployed at AmLaw 100 firms.

Which should you choose?

• Choose Spellbook if contracts are the work: you want review, drafting, playbooks with fallback positions, market comparison and a multi-document agent in one Word-based suite, and a 7-day trial before you talk price.
• Choose Lexis+ with Protégé if research drives the purchase: you need LexisNexis primary law, Practical Guidance and Shepard's behind every answer, you draft litigation documents as well as agreements, or your firm's precedent sits in iManage, NetDocuments or SharePoint.
• Consider Gavel Exec if your research subscription is settled and the gap is the markup: contract redlining, playbooks and benchmarking, listed at $160 per user per month and billed month to month.

A third option for the contract half: Gavel Exec

Plenty of firms that compare these two keep LexisNexis for research and are really choosing a contract tool. Gavel Exec is AI contract review and drafting software made by Gavel for that contract half. Its source checks draw on your own precedent and matter files, SEC EDGAR and government sources, because Gavel Exec is built for transactional work and has no case-law research database or native iManage or NetDocuments integration today, while Relativity, Gavel's parent company, covers litigation and e-discovery.

Here is what a review looks like. You open the counterparty's .docx in Word and choose a playbook. Gavel Exec then redlines the entire agreement with tracked changes in priority order, gives its reason for each, leaves comments in the margin and names the terms the draft lacks.

Where LexisNexis prices by organization size and Spellbook quotes after a demo, Gavel Exec posts its price on the website: $160 per user per month, or $1,740 per user per year. Each paid seat gets 1,000 queries a month, nothing locks you into a long-term contract, and team pricing starts at 10 seats.

• Playbooks: attorneys in corporate and real estate law helped develop the built-in playbooks, and you can also upload your checklist, spreadsheet playbook or executed agreements as .docx, PDF or .csv files and let Gavel Exec turn them into rules. A playbook can be shared with colleagues as read-only or editable.
• Benchmarking: in the web app, Gavel Exec rates every provision on-market, off-market or missing, and the results filter by jurisdiction, industry and company size.
• Drafting: draft in Word from your precedent, a template or a blank page, and rewrite any clause with Quick Actions or a prompt.
• Trial: the 25 free queries each user receives need no credit card and no sales call, so the same contract can go through Gavel Exec during Spellbook's 7 days or LexisNexis' 2.
• Security: SOC 2 Type II certified. Zero Data Retention agreements cover every AI model provider Gavel uses, OpenAI included, and each customer gets a separate subdomain, database and file store. Default hosting is AWS in the United States, and EU, Canada and Australia regions are available. Details are on the Gavel security page.

A published result for this kind of markup work: Legal Counsel Omar Nakadi, who works at a regulated financial services firm, estimates that review takes 40 to 60% less time per contract. Gavel Exec launched in 2025 from the company started in 2019 by Dorna Moini, Gavel's CEO and Founder, who practiced as a litigation associate at Sidley Austin. Gavel counts more than 2,000 legal organizations across 28 countries as users.

The one-on-one page is Spellbook vs Gavel Exec.

How to test Spellbook and Lexis+ with Protégé side by side

1. Count last month's questions. Sort the past 30 days of AI-suitable tasks into research (case law, statutes, practice guidance) and contract work (drafts, markups, playbook checks). Start the trial that matches the larger pile.
2. Prepare before the LexisNexis clock starts. With only 2 days, line up three research questions you have already answered by hand and one agreement to draft, then submit the trial form.
3. Run one negotiated contract through each contract tool. Take a counterparty draft you marked up last quarter. Review it in Spellbook against a playbook, ask LexisNexis to show the same review in a Lexis Create+ demo, and spend some of Gavel Exec's 25 free queries on the same file. Compare each result with the markup you sent.
4. Check one citation trail. Ask Protégé and Spellbook's Ask the same legal question. Confirm that each cited authority exists, says what the answer claims, and is still good law, using Shepard's where you have it.
5. Get the terms in writing. From LexisNexis: the per-user price, whether Lexis Create+ and DMS integration are included, the Vault limits and the contract length. From Spellbook: the per-user price, whether there is a seat minimum, the billing term, and what Compare to Market costs if you keep your data out.

More comparisons: Spellbook alternatives, Spellbook vs CoCounsel, CoCounsel alternatives and the full list of Gavel comparisons.