Your AI legal copilot
Analyze documents, search case law, and generate legal briefs in seconds. Specialized in Spanish and Latin American law, verified against official sources.
Designed for legal professionals across Spain
Leading firms already integrating AI in their legal practice
The world's top firms use artificial intelligence to boost efficiency
#1 in legal accuracy for Spanish law
98.1% on the Bar Access Exam (304/311) and 99% on the Judiciary Exam (99/100). Blind evaluation with verified Ministry of Justice and CGPJ answer keys.
See results & methodologyLegal accuracy: Bar Exam + Judiciary · Mar 2026
* Bar Exam 2025: 304/311 questions (98.1%). Judiciary CGPJ 2025: 99/100 (99%). Combined: 98.1% (411 questions). Competitors measured without specialized legal corpus. Model: Claude Opus 4.6 with RAG, evaluated Mar 2026.
How it works
From document to verified result in three steps
Upload your document
Drag contracts, complaints, or judgments. Supports PDF, DOCX, and plain text.
AI analyzes
Our legal model processes, extracts key clauses, and identifies risks.
Verified results
Get analysis with citations to official sources, verified against BOE, CGPJ, and each jurisdiction's databases.
Everything you need
AI tools designed by and for lawyers
Legal AI Chat
Ask any legal question and get precise answers citing articles, case law, and BOE. No hallucinations.
Anti-Hallucination Verification
Every citation is cross-checked against BOE and CGPJ in real time. If it cannot verify, it tells you. Zero reputational risk.
Document Analysis
Upload contracts, complaints, or judgments and detect unfair clauses, risks, and key points in seconds.
Case Law Search
Semantic search across thousands of Supreme Court and appellate judgments. Find the precedent you need.
Legal Writing Generator
Generate drafts of complaints, answers, appeals, and contracts. You review and sign; AI does the heavy lifting.
Deadline Management
Automatic calculation of procedural deadlines by procedure type. Alerts before a critical deadline slips by.
Adversarial Analysis
NewDoes your brief have weak points? Find them before opposing counsel does. AI analyzes your arguments from the opponent's perspective.
Declaration Prep
Generate interrogatories, prepare witnesses, and anticipate opposing counsel's questions before trial.
Escribano AI
NewRecord client meetings, transcribe automatically, and generate minutes with key points, action items, and legal references. Everything indexed and searchable from the chat.
Legal CRM
NewConvert WhatsApp, voice or web leads into clients with a complete profile. Visual pipeline lead → client, fiscal data, and matter history.
Professional Invoicing
NewGenerate official invoices from tracked time. Automatic IVA/IGIC/IPSI by territory, IRPF withholding by legal form, sequential numbering.
VeriFactu (AEAT)
NewCompliance with Royal Decree 1007/2023. Each invoice generates a chained SHA-256 hash and QR code verifiable with the Spanish Tax Agency.
24/7 Voice & Chat Agent
NewAttend and capture clients around the clock via WhatsApp, web, Instagram, and phone. Auto-qualifies leads and notifies you when a potential client is ready.
Time Tracking
Integrated timer per case and task. Generate invoices directly from logged hours, with AI-generated descriptions and fee calculation to the second.
Client Portal
NewYour client uploads documents without creating an account. Send a tokenized link, they attach what you need. Real-time tracking from the case file.
AI Contract Analysis
NewClause-by-clause analysis with Spanish legal context. Detects risks, unfair clauses, and contractual imbalances in seconds.
Client Messaging Portal
NewDirect communication channel with your clients from the case file. Async messaging, automatic notifications, and AI-generated formal communication drafts.
Procedure Engine
NewStep-by-step procedural workflow. Select the type (ordinary, summary, family...), the system generates briefs for each phase with deadlines and required documents.
Electronic Signatures
NewSend documents for legally valid electronic signature. Signaturit integration, automatic reminders, and tracking from the case file.
LexNET Preparation
NewValidate and prepare your briefs for electronic filing. Checks format, size, metadata, and court requirements before submission.
Firm Knowledge Base
NewCentralize your firm's knowledge. Upload templates, models, and internal documentation. The AI includes them in its responses.
Client Intake Form
NewGenerate a public link for potential clients to submit their query with documents. No login, tokenized, straight to your CRM.
Legal Calendar
NewUnified monthly view of procedural deadlines, meetings, and due dates. Google Calendar and Outlook integration.
Supported Jurisdictions
Verified legal corpus from 20 Spanish-speaking countries
Spain
BOE, CGPJ, Supreme Court
Mexico
DOF, Chamber of Deputies
Colombia
SUIN-Juriscol, Senate
Argentina
InfoLEG, SAIJ
Chile
BCN, Judiciary
Peru
Congress, SUNAT
Only legal AI with Spanish foral law
Complete coverage of Catalonia (CCC, 6 books), Basque Country (foral tax laws from all 3 territories), Navarre (Fuero Nuevo, 596 laws), Aragon, Galicia and Balearic Islands. Automatic territory detection — lawyers get the applicable regional law, not just state law.
Zero hallucinations
Unlike ChatGPT, Lexiel verifies every legal reference against BOE, CGPJ, and official codes. If it cannot verify a citation, it tells you.
Generic AIs hallucinate case law
A fake citation is malpractice. Lexiel verifies every reference against CENDOJ and the BOE before showing it to you.
Question
Can I claim moral damages for workplace harassment?
Yes, you can claim moral damages for workplace harassment. According to Supreme Court Ruling (Social Chamber) of February 14, 2022, ROJ: STS 892/2022, the TS recognized €18,000 in moral damages arising from workplace harassment. Requirements: proven harassment, causal link, and actual harm...
"STS 892/2022" : This ruling does not exist in CENDOJ. Reference fabricated by the AI.
Using this citation in a legal brief could constitute professional malpractice.
Yes. Art. 183 LRJS allows moral damage claims cumulable with wrongful dismissal compensation. The TS (Social Chamber) consolidated this doctrine; see STS 4985/2019 (Rec. 2019/2017) and STS 3270/2021 (Rec. 3270/2019), both verified in CENDOJ.
Lexiel has verified over 95,000 legal fragments against official sources. Score on the Bar Access Exam: 99.3% (149 out of 150 questions).
The only AI built for Spanish-speaking lawyers
ChatGPT, Gemini and Claude are generic tools. Lexiel is the only AI that knows Spanish and Latin American law and verifies every citation before showing it to you.
Comparar con (máx. 3)
Lexiel inside your Word
Analyze, fix and consult case law without leaving Word. Everything you do automatically syncs to your case file at app.lexiel.ai.
Clause SÉPTIMA
RESOLUCIÓN ANTICIPADA
Void clause by law
Art. 11.2 LAU sets a 1-month/year cap. This clause doubles it; legally void and unenforceable.
Legal cap
1 month/yr
This clause
2 months/yr
Case law
Reaffirms that penalties exceeding Art. 11.2 LAU limits are void and unenforceable.
Full interactive demo available on desktop
Contrato de Arrendamiento de Vivienda
En Madrid, a 15 de enero de 2025. De una parte, como ARRENDADOR, D. Antonio García López, mayor de edad, con NIF 12.345.678-A. De otra parte, como ARRENDATARIO, Dña. Carmen Martínez Ruiz, con NIF 98.765.432-B.
CLÁUSULA PRIMERA. OBJETO
El ARRENDADOR cede en arrendamiento al ARRENDATARIO el inmueble sito en Calle Mayor, 24, 3.º B, 28013 Madrid, con referencia catastral 4567890VK4746S0001IW.
CLÁUSULA SEGUNDA. USO Y DESTINO
El ARRENDATARIO destinará el inmueble exclusivamente al uso de vivienda habitual y permanente. Queda expresamente prohibido cualquier uso comercial o profesional.
CLÁUSULA TERCERA. DURACIÓN
El contrato tendrá una duración de cinco (5) años contados desde la fecha de firma, prorrogable anualmente conforme al Art. 10 LAU.
CLÁUSULA CUARTA. RENTA MENSUAL
La renta mensual pactada es de OCHOCIENTOS EUROS (800,00 €), pagadera los primeros cinco días naturales de cada mes mediante transferencia bancaria.
CLÁUSULA QUINTA. FIANZA Y GARANTÍAS
El ARRENDATARIO entrega la cantidad de OCHOCIENTOS EUROS (800,00 €) en concepto de fianza legal conforme al Art. 36 LAU.
CLÁUSULA SEXTA. CONSERVACIÓN Y OBRAS
El ARRENDADOR está obligado a realizar las reparaciones necesarias para conservar el inmueble en condiciones de habitabilidad.
CLÁUSULA SÉPTIMA. RESOLUCIÓN ANTICIPADA
The early termination penalty shall equal two (2) months' rent per year or fraction remaining until the agreed end of the contract, regardless of the reason for termination.
CLÁUSULA OCTAVA. SUMINISTROS
Los gastos de suministros de electricidad, agua, gas y telecomunicaciones correrán a cargo exclusivo del ARRENDATARIO desde la fecha de entrega de llaves.
CLÁUSULA NOVENA. DERECHO SUPLETORIO
En lo no previsto en el presente contrato, se estará a lo dispuesto en la Ley 29/1994 de Arrendamientos Urbanos y demás normativa de aplicación.
Lexiel en Word
Plugin active
app.lexiel.ai
Client case file
Contrato Martínez · Arrendamiento
Analyzed document
Contrato_arrendamiento_Martinez_2025.docx
Analyses run
1 analyses · clause SÉPTIMA
Last activity
Just now · from Word
Changes saved automatically
Every Word correction or analysis is logged in your client case file.
Full analysis history
Access all analyses, accepted suggestions and consulted case law from any device.
Team notifications
Collaborators are notified when you add analyses or fix clauses in shared documents.
Collaborative review
Comment, approve and reject suggestions directly in the case file with your whole team.
Analyze while you draft
Select any clause. Lexiel analyzes it with verified case law without leaving Word.
Insert case law
TS, TC and High Court rulings directly in your document with formatted citation.
Auto-anonymization
Detects names, IDs and sensitive data. Batch-replaces before sharing.
Contract review
Identifies risky clauses and suggests alternatives based on recent case law.
Security & privacy
Your legal data deserves the highest protection
GDPR compliant
Your data is stored on servers within the European Union and protected by GDPR — the world's strictest privacy regulation. No data ever leaves Europe.
End-to-end encryption
Every document you upload and every query you send is encrypted in transit and at rest. Even if intercepted, your data is completely unreadable.
EU AI Act (AIA) ready
We comply with Europe's AI Regulation and all 5 recommendations from the CGAE/ICAV AI White Paper: accountability, human oversight, transparency, privacy, and instrumentality. Every response includes a reliability indicator with verifiable sources.
Local processing available
For maximum control, you can run Lexiel entirely on your own servers. Your documents and queries never leave your infrastructure.
Your data never trains AI
Unlike other AI tools, we never use your documents, queries, or cases to train or improve our models. What's yours stays yours, always.
Audit trail & access control
Every action on the platform is logged. See exactly who accessed what and when, and set granular permissions for each user in your firm.
Automatic data anonymization
Client personal data is automatically masked before being sent to any AI model — GDPR compliance built into the most sensitive part of your workflow.
Immutable audit log
Every action, query, and document is logged with a cryptographic signature — meeting VeriFactu (AEAT) requirements and providing full traceability for any inspection.
Two-factor authentication
Secure your firm access with two-factor authentication (2FA). Enterprise identity management via Keycloak, compatible with Google, Microsoft, and corporate SSO.
What our users say
Lawyers already using Lexiel in their daily practice
“I used to spend 3 hours searching case law for each case. With Lexiel, in 15 minutes I have relevant Supreme Court rulings with citations already verified. It has completely changed my workflow.”
M.S.H.
Partner · Civil & Family Law
“What I value most is that it doesn't make anything up. Every cited article I verify and it's always correct. In a sector where precision is fundamental, that's everything.”
C.R.M.
Attorney, Employment Law
“We manage regulatory compliance for 12 subsidiaries. The document composer saves us weeks of work by generating report drafts that we used to do manually.”
E.T.V.
General Counsel · Compliance
Calculate your return on investment
How much is your time worth? Find out in seconds if Lexiel pays for itself.
Hours recovered/month
Additional revenue
Payback in
Based on documented average AI legal efficiency. Basic plan cost: €69/month.
Backed by the profession
“53.3% of Spanish lawyers consider AI beneficial to their professional practice
You're not a lawyer, but you have a legal problem
Understand your rights before spending on a lawyer. Clear answers, based on the law, no jargon.
Insurance dispute
Denied coverage or underpaid claim. Lexiel analyzes your policy and tells you if you have a case.
Unfair employment contract
Abusive clauses, unpaid overtime, unfair dismissal. Know your rights before you sign or file a claim.
Abusive mortgage clause
Floor clauses, formalization costs, IRPH... Lexiel identifies the illegal clauses in your loan.
Consumer complaint
Defective product, unfulfilled service, inflated bill. File your claim with the right legislation.
Why Lexiel and not ChatGPT?
Answers verified against official legal sources
Specialized in Spanish legislation
Cheaper than a lawyer consultation
ChatGPT can make up articles and rulings that don't exist. Lexiel verifies every citation against official sources.
No card for the free trial. Annual plan, no lock-in.
Lexiel Academy: master Legal AI
64.7% of lawyers have no AI training. Our free certifications cover everything from fundamentals to compliance, tax law, and digital regulation.
+4 more courses available
The legal AI with 98.1% on Bar Exam and 99% on Judiciary
Outperforms all other legal platforms. Join the firms already working with the most accurate tool on the market. 14-day money-back guarantee.
14 days free · Cancel anytime