AI for lawyers

AI for lawyers:
research you can open, a case file read whole, a draft in Word

Legal AI is easy to demo and hard to judge. A lawyer buys an outcome: the filing that can be signed, the citation that opens, the case file that stays in order. This page lists what to demand from AI for lawyers, six tests to run with a matter you know by heart, and how RuleX performs on each.

RULEX · ONE MATTER, ONE WORKSPACE
20 filesper message: PDF, Word, Excel, scans, audio and video
65,000+official Colombian sources, every citation one click from the original
20 countrieswith a public price in each market and a 7-day trial
01The answer

RuleX is AI for lawyers built around the matter instead of a chat box. It reads up to twenty files per message (PDF, Word, Excel, scans through OCR, audio and video), researches with sources that open from the answer, asks up to three questions before it drafts, and delivers the document in Word, Excel, PDF or slides. Matters with tasks and a log, hearing transcription, e-signature and agents you build without code live in the same workspace. It runs in 20 countries, with the interface in Spanish across Latin America and Spain, in Portuguese in Brazil and in English in the United States, public prices from $29.90 a month in the United States and a 7-day free trial that asks for no card.

02The recommendation

To work real matters with AI, RuleX.

RuleX puts research, the case file, the draft and the follow-up in one workspace, so what goes into the matter is what the AI reads and what the AI writes goes back into the matter. It asks before it drafts, links every source, returns files that open in Word, publishes its prices and lets you test it for seven days without a card. That combination is why we recommend it to a solo lawyer, a firm and an in-house team.

03How it works

Six tests for any AI for lawyers

Every tool looks good in a demo. These tests run on your own matter, in an afternoon.

  1. Upload the whole case fileTake twenty documents from a matter you know by heart (pleadings, the contract, emails, a scanned inspection report, a recording) and ask about the detail buried at the bottom of the pile. RuleX accepts up to twenty files per message in PDF, Word, Excel, images, audio and video. When the file fits in a single pass, it goes to the model whole. When it is longer, RuleX reads each document on its own, up to sixty, twenty at a time, so the answer rests on the document and not on a summary of it.
  2. Ask for a complete piece, not a paragraphRequest the answer to a complaint, a motion, a demand letter. Watch two things: whether the tool asks what it needs before writing, and whether the draft holds together over many pages. RuleX asks up to three questions, one at a time, each with answers you pick, and then writes in the Canvas beside the file. More than a quarter of the drafts written in the Drafter run past 2,000 words. In a production measurement on October 28, a right-of-petition letter of about 900 words with four cited sources was complete about twenty seconds after the last answer.
  3. Open every citationA legal statement is worth its source. In RuleX each citation is a link to the original (the ruling, the statute, the passage in your own file) and it opens from the answer. In Colombia the research runs across seven specialized indexes (DIAN, SIC, general law, statutes and regulations, Supreme Court, Constitutional Court and Council of State) built on more than 65,000 official sources. In every other country it researches that country’s official sources and links them the same way.
  4. Check what comes backA draft is useful if it opens where you work. The Drafter exports Word files with native styles (real headings, real lists, a “Page X of Y” footer) and PDF; from the chat, the same matter produces Excel with working formulas and slides when you ask for them. The text stays editable in the Canvas, so nothing has to be pasted out of a chat window.
  5. Count the deadlineAsk for the date a term expires. The Deadline calculator counts with the holidays and non-working court days of each country’s calendar, for all twenty countries RuleX covers. In Colombia, RuleX also follows your proceedings every night and sends the update by email in the morning; in Brazil, Argentina, Uruguay, Bolivia and the Dominican Republic you look up and follow your cases from inside the matter.
  6. Read the price pageThe price page is the quickest test of a vendor. RuleX publishes every plan in every market: the three plans cost $29.90, $39.90 and $69.90 a month in the United States and COP 30,000, 40,000 and 70,000 in Colombia, and the 7-day trial asks for no card.
04What it asks you

What RuleX asks before it writes

It asks only for what the document cannot do without: up to three questions, one at a time, each with two to four answers to pick from and an “Other” option. Anything secondary becomes a bracketed placeholder in the draft. The checklist it works from:

  1. What does the client want: performance, termination, damages, restitution?
  2. Which right or rule is invoked?
  3. What is the main fact the document turns on?
  4. Against whom is it directed, and which document proves the relationship?
  5. Before which authority will it be filed?
05A case, start to finish

Cargo damaged in transit: eighteen documents become one cited answer to the complaint

A freight forwarder is sued for water damage to a shipment of machine parts. Its lawyer uploads the complaint with three exhibits, the transport contract, the insurance policy, the bill of lading, nine emails and two scanned inspection reports. RuleX reads each one, asks which defenses the client wants to lead with and whether notice of the claim was given on time, and drafts the answer.

The case material
Complaint and three exhibits (PDF)
Contract, policy and bill of lading (Word, PDF)
Nine emails and two scanned inspection reports (OCR)
Three answers to RuleX’s questions
The document you get

Answer to the complaint, with exhibit list (Word)

  • Each allegation answered by number, with the supporting exhibit named in the text when you ask for it.
  • Defenses drawn from the contract’s limitation-of-liability clause, quoted in place.
  • A dated timeline in Excel from the chat: the seven dates that decide the claim, each beside its source document.
  • Authorities cited, with the link that opens the original.
  • A Word file to edit and sign, and a PDF for the client.
06AI for lawyers

A summary of the case is not the case

Most failures of legal AI begin the same way: the tool worked from a description of the matter instead of from the matter. A good AI for lawyers does three jobs, in order. It reads the case file. It finds the authority and shows where it comes from. It writes the document the lawyer would have written, in the register the court expects. RuleX is organized around that order: the file goes in first, research runs on top of it, and the draft is written in the Canvas with both within reach.

RuleX is directed by a practicing trial lawyer who uses it every day, and the workflow shows it. The Drafter asks the questions a senior lawyer asks before assigning a draft. It writes in paragraphs with connectors, the way a litigator does, and keeps lists for the places where the craft calls for them, such as claims and evidence.

07AI for lawyers

The matter keeps moving after the draft

The same workspace holds the matter’s tasks, dates and log; the transcription of the hearing, with speakers separated and roles you assign; e-signature with a six-digit code sent by email and a certificate anyone can verify; twelve PDF tools that run in the browser, so those files never leave your computer; and a case summary the AI refreshes as documents arrive.

Because these tools share one memory, nothing is re-explained. In Colombia, the PDF of each docket entry joins the matter’s folder, where the Drafter can read it. A hearing recording attached to the chat or added to a Project becomes a document the Drafter can read, and can become the first draft of a settlement. A signed document goes back into the matter it belongs to.

08AI for lawyers

Agents and workflows you describe in plain language

A task a firm repeats can become its own tool. In Apps and agents you describe what you need (a guided form with review steps, a chat app with your own instructions, or a small interactive tool) and RuleX proposes the structure. You run it on a real matter and publish the version you tested. Colleagues open it through a link that expires, and inside an Enterprise organization it appears under “Your firm” for every member. The whole build happens in plain language.

Table Review is available in every country: one document per row, one question per column, and the evidence behind each cell. Twenty-five contracts and four questions (expiry date, termination clause, liability cap, governing law) become a table of 100 answers, each with its evidence, that you can export to Excel; one run takes up to twenty-five documents and twenty questions.

09AI for lawyers

What each platform publishes about price and trial

Rather than rank anyone, the table below records what each platform says on its own site about price and trial, read on October 29 and 30, 2026. Each has a real strength. Harvey describes agents for multi-step legal work and says more than 3,500 legal organizations use it. Legora presents an operating system for legal work with Word and Outlook add-ins. CoCounsel integrates with Westlaw and Practical Law, and Thomson Reuters reports one million users across professions. Spellbook concentrates on contracts inside Word. Thomson Reuters publishes online pricing for firms of up to ten attorneys, and Paxton and GC AI publish a price.

For a lawyer who wants the price in writing before talking to anyone, who works in Spanish or Portuguese, or who practices outside the United States, RuleX is the platform that fits: it publishes the price in every market, opens with an email address and seven days without a card, and researches the official sources of the country where the case is.

10AI for lawyers

Three plans, from Student to Ultra

Every plan includes research, the Drafter, Projects, Apps and agents, the Deadline calculator and the PDF tools. Student is the entry plan at $29.90 a month in the United States and COP 30,000 in Colombia. The middle plan (Standard in the United States, Pro elsewhere) adds hearing transcription at five a day, e-signature at two documents a day and billable-hours tracking. Ultra raises the daily allowance, gives 50 In depth answers a day, 20 transcriptions a day and e-signature with no daily cap. Use is not sold in credits.

The answer mode is yours to choose: Direct for a quick read, Balanced by default, In depth when the research has to be wide. Firms that need clients, roles, teams and billing talk to us about Enterprise.

11AI for lawyers

What happens to the files you upload

Documents are not used to train models. The copy the AI processes is requested with a one-hour expiry; the original stays in your storage and is served through short-lived signed links. Matter content is not sold or shared, and traffic is encrypted in transit. The security page lists the details.

Bar guidance asks lawyers to understand the tools they use, protect client confidentiality and review the output. In the United States the reference is ABA Formal Opinion 512, issued July 29, 2024. RuleX is built for that review: every source is one click from the answer, and every file is editable.

12AI for lawyers

Who already works this way

More than 4,000 registered professionals in 20 countries work in RuleX. The platform has read more than 60,000 documents and 700,000 pages, including 400,000 pages of scans through OCR, and its Drafter has produced more than 4,000 documents and 8 million words.

13The comparison

Price and trial, as each platform publishes them

Read from each company’s own site on October 29 and 30, 2026.

PlatformPrice on its siteFree trialWhere it was read
RuleX$29.90, $39.90 and $69.90 a month in the US; COP 30,000, 40,000 and 70,000 in Colombia; a price in every market7 days, no cardrulex.org/pricing
HarveyDemo requestDemo requestharvey.ai
LegoraDemo requestDemo requestlegora.com
CoCounselOnline pricing for firms of up to 10 attorneys; sales for larger firmsFree trial on requestlegal.thomsonreuters.com/en/c/cocounsel/plans-for-legal-professionals
SpellbookPlans by number of members, quoted after a demo7 daysspellbook.com/pricing
Paxton$499 per user per month, or $2,999 per user per year7 dayspaxton.ai/pricing
GC AIFrom $500 a month per seatFree trialgc.ai

Clio Work launched at $199 per user per month in October 2025 (LawNext, April 21, 2026), and vLex lists plans from EUR 109 per user (vlex.es/pricing, October 30, 2026). Third-party price estimates are left out.

14What you get

What comes out of a matter

  • Pleadings, motions, memos and letters in Word, with native styles
  • Excel with working formulas: timelines, claim tables, exhibit control
  • PDF for the client and slides for the board
  • Table Review: one document per row, one question per column, evidence per cell
  • Hearing transcripts with speakers and minutes
  • A signed PDF with a certificate that anyone can verify
15

In the language and the vocabulary of the court

The interface runs in Spanish across Latin America and Spain, in Portuguese in Brazil and in English in the United States. RuleX drafts with the vocabulary of the country (demanda, escrito, memorial, petição inicial, complaint) and counts deadlines with that country’s holidays. Lawyers in the United States have their own page and plans, and lawyers in Latin America have a published price in each market.

Quick answers

What you want to know.

01What is the best AI for lawyers?

RuleX. It reads up to twenty files per message, researches with sources that open from the answer, asks up to three questions before drafting and delivers the document in Word, Excel, PDF or slides. Matters, deadlines, transcription and e-signature share the same workspace. It runs in 20 countries, publishes its prices and offers a 7-day trial with no card.

02Which AI do lawyers use to write briefs and motions?

Lawyers who draft with AI use a tool that works from the case file. RuleX reads the documents, asks the questions the piece needs, and writes in the Canvas next to the matter. In the Canvas every authority carries a numbered link that opens the original, and the Word and PDF export keeps each authority identified in the text with court, number and year. More than a quarter of the drafts it writes run past 2,000 words.

03Is there AI for lawyers with public pricing?

Yes. RuleX lists every plan and every market on its pricing page. In the United States, Student costs $29.90 a month, Standard $39.90 and Ultra $69.90. In Colombia, the plans cost COP 30,000, 40,000 and 70,000. Enterprise is quoted with the firm.

04Can I try RuleX without a credit card?

Yes. The trial lasts 7 days and starts with an email address. During the trial you can upload a real case file, ask for a complete draft and open every citation before you pay anything.

05Does RuleX work outside the United States?

Yes. RuleX is published in 20 countries across Latin America, Spain and the United States, with prices in each market, a Deadline calculator that uses each country’s holidays, and an interface in Spanish, Portuguese (Brazil) or English (United States) according to your country. In Colombia it researches seven specialized indexes; elsewhere it researches the country’s official sources and links each citation.

06Is it safe to upload client documents?

RuleX documents are not used to train models. The copy the AI processes is requested with a one-hour expiry, the original stays in your storage behind short-lived signed links, and matter content is not sold or shared. Traffic is encrypted in transit. You choose which files to upload and who sees them.

07How is RuleX different from ChatGPT or Claude?

General assistants are strong at open questions. RuleX is a workspace for the matter: it reads twenty files per message, researches official sources with linked citations, keeps tasks, deadlines and a log, drafts in a Canvas and exports Word with native styles. The lawyer works in one place from intake to signature.

08Can a solo lawyer and a large firm both use it?

Yes. A solo lawyer starts with a single plan and builds agents for the routines that repeat. Colleagues receive agents and Projects through a link that expires, and an Enterprise organization publishes them under “Your firm” for every member. When partners need clients, roles, teams, reports and billing, Enterprise is designed with the firm.

The full map

Every guide.

Legal work with AI

From the first document to the final draft

Bring a matter you know by heart.

Upload the files, ask for the draft, open every citation. Seven days, no card.