Lexiel: why an AI lawyer must know Spanish first
There are dozens of "AI lawyers" on the market. Almost all are trained on Anglo common law. If your case happens in Spain, that's like calling a New York attorney for your divorce in Murcia: friendly, but useless.
The problem with generic AI lawyers
When we started designing Lexiel, the first instinct was the obvious one: take a large model, feed it some legal texts, and call it "Memchats legal advisor". That's what almost every product in the space does. And it's why almost every one of them is useless for real cases.
The problem is structural: large LLMs are trained mostly on English text, and when they talk about "law" they're thinking Anglo-American common law. They'll tell you that you have "discovery rights", quote "case law" at you, and recommend things that in Spanish law don't apply or apply very differently.
How Lexiel is built
Spain runs on codified continental law. The Civil Code has numbered articles. Supreme Court rulings create doctrine, but the primary source is written law. A separated mother in Madrid doesn't need to know what happens with custody in California: she needs to know what art. 92 of the Civil Code says about joint custody and how the Audiencia Provincial of Madrid is interpreting it in 2025.
That's why Lexiel is built differently. First: curated corpus of current Spanish law (Civil Code, Penal Code, LEC, special laws), kept up to date with the BOE. Second: relevant Supreme Court and Audiencia case law indexed by subject. Third: area-specific prompts (family, employment, tax) that force Lexiel to cite sources.
The difference in practice
When you ask Lexiel "my ex wants to change the visitation schedule unilaterally", it doesn't answer with general "fairness" principles. It says: "Per art. 158 of the Civil Code and TS doctrine from 12/03/2024 on modification of measures, they cannot do so without written agreement or judicial ruling. Here's the suggested message referencing that."
That's the difference between "this is informational" and "this can serve as a basis for a negotiation or a brief to the court". It doesn't replace your human licensed lawyer (clear disclaimers) but it takes you 80% of the way and saves your lawyer hours of prep work.
The strategy is deliberate: we're building Lexiel for Spain first, and only then looking at Italy, Portugal, LATAM. Real verticals, not fake horizontals. A generalist legal advisor good for every country is really good for none.
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