Lexiel vs Aranzadi AI 2026: Honest Comparison for Lawyers in Spain

Aranzadi LA LEY, part of Karnov Group, is one of the most recognized names in Spanish legal publishing. Its artificial intelligence offering is called Allegra, which its website presents as "the legal Artificial Intelligence solution applied to Law", together with its evolution towards workflows, Allegra Flow (according to its website, checked on 11 November 2026).

---

Origin and Approach

Allegra grows out of an existing doctrinal and case law database: according to its website, it is used to "research, analyse and draft", combining Aranzadi LA LEY's legal database with the user's own documents. Practice management is offered through a different product, Aranzadi Fusión, software for matters, agenda and billing (according to its website, checked on 11 November 2026).

Lexiel was built as an all-in-one platform for the firm. The AI engine is not an add-on to an editorial database but the core everything was built from, in a single tool: research, briefs, case files, deadlines, billing and client portal.

---

Feature Comparison

Feature	Aranzadi LA LEY (according to its website, checked on 11 November 2026)	Lexiel
Case law and legislation research	✅ Yes (Allegra)	✅ Yes
Academic doctrine & commentary	✅ Yes (Allegra synthesises "case law, doctrine and legislation")	⚠️ Limited
Brief drafting	✅ Yes (Allegra)	✅ Yes, with workflows
Contract and document analysis	✅ Yes (Allegra)	✅ Yes
Case management	✅ With Aranzadi Fusión, a separate product	✅ Built in
Deadlines and agenda	✅ With Aranzadi Fusión	✅ Built in
Billing	✅ With Aranzadi Fusión	✅ Built in, with time tracking
Client portal	Not described on its website	✅ Yes
Price	Not published: its website offers a demo request	From €52/month + VAT (annual) to €74/month + VAT (annual)

---

Accuracy Benchmark

System	Spanish Bar Access Exam (July 2026, 152 questions)
Lexiel with RAG	98.0%
Aranzadi Allegra	Not measured by us

We have not measured Allegra and know of no measurement of it on this exam. The Lexiel benchmark uses the 152 scorable questions of July 2026, with a public methodology and downloadable raw data.

---

What Aranzadi Does Better

Editorial collection

Aranzadi LA LEY has its own editorial collection of doctrine: databases, journals, books and updatable works. For a lawyer who needs doctrinal depth in complex cases, that collection is its main advantage and Lexiel does not replicate it.

Product ecosystem

If your firm already uses its databases or its management software, staying with the same vendor can simplify contracts and training.

Brand recognition

The brand is well established in the Spanish legal sector, especially among large firms.

---

Where Lexiel Fits Better

Everything in one tool

At Aranzadi LA LEY, the AI (Allegra) and practice management (Aranzadi Fusión) are separate products. In Lexiel, research, briefs, case files, deadlines and billing share the same account and the same data.

Published pricing

Aranzadi does not publish prices on its website. Lexiel publishes its prices and offers a 14-day free trial.

Public benchmark

Lexiel publishes its bar exam result with the methodology and raw data. We know of no equivalent public measurement of Allegra.

Latin America

Aranzadi LA LEY's website does not mention Latin American coverage. Lexiel offers accounts for several Latin American countries, each with its own country's corpus (it is not the same account as the Spanish one, each market has its own).

---

Who Is Each Best For?

Aranzadi LA LEY: firms that need first-rate academic doctrine and firms already integrated into its databases or its management software.

Lexiel: solo lawyers and small and mid-size firms that want research, drafting and practice management in one tool with published pricing, and firms with clients in Latin America.

---

Verdict

Aranzadi LA LEY is a reference for deep doctrinal research, and its editorial collection is hard to replicate. If what you need is a single tool that combines AI research and practice management, with published pricing, Lexiel is the alternative worth trying.

Try Lexiel free for 14 days →