Relex & Claude face à Westlaw
Vos clients, vos données et votre cabinet vous appartiennent.
Westlaw is Thomson Reuters' legal-research service: a proprietary, editorially enhanced database of case law, statutes and secondary sources, with headnotes and KeyCite, and AI-Assisted Research layered on top, sold by subscription through sales. Relex is not a research database you rent. It gives the Claude you already pay for the whole matter as a formal ontology, and grounds every citation in verbatim text it fetches and caches from official and free sources, which a verifier then enforces. The law you cite is checkable, and the client's identity never reaches a model.
En un coup d'œil
| Dimension | Relex | Westlaw |
|---|---|---|
| Où vont les données client | Chiffrées dans votre navigateur avant que quoi que ce soit ne quitte votre appareil. Le modèle ne voit jamais que [Party 1]. | A proprietary, editorially enhanced research corpus (headnotes, KeyCite), licensed by subscription; Thomson Reuters publishes an enterprise security and compliance program. |
| Quelle IA l'exécute | Apportez votre propre Claude ou Claude for Legal via MCP et OAuth. Le raisonnement vous appartient. | AI-Assisted Research and CoCounsel features run on Thomson Reuters' own stack. Westlaw does not publicly describe bringing your own model or agent into the product. |
| L'essayer aujourd'hui | Inscrivez-vous et traitez un vrai dossier en quelques minutes. Essai gratuit, sans carte. | Quote-based subscription through sales; no public pricing. |
| À qui appartient le client | Réseau Partenaires : gardez le client et conservez 100%, avec 0% de commission. | A research subscription, not a client-ownership or referral model. |
| Structure du dossier | Une ontologie formelle des parties, questions, prétentions, textes de loi et faits. | A search interface over case law, statutes, regulations and secondary sources. |
| Votre savoir-faire | Un index privé propre à chaque locataire que le modèle consulte. Jamais une copie qu'il conserve ou sur laquelle il s'entraîne. | Your notes and folders inside the platform; the corpus itself is Thomson Reuters' licensed content. |
| Pour commencer | Dans le navigateur en quelques minutes, de façon autonome ou avec votre propre Claude. | Sales process and subscription setup. |
Cette comparaison reflète le positionnement public de chaque produit tel qu'il était en juillet 2026. Westlaw est une marque de son propriétaire respectif, et cette page est une comparaison indépendante.
Le pari inverse
Westlaw is the bet that legal knowledge is a proprietary database you subscribe to, with the publisher's editorial layer between you and the law. Relex takes the opposite bet. The law is grounded from official and free sources into verbatim cached text, a verifier rejects any citation that is not backed by that text, and the reasoning belongs to the Claude you already pay for. You are not renting access to the law; you are grounding your own work in it.
Pourquoi l'association l'emporte
A research database can return authorities. It cannot run your matter: the parties, issues, claims, statutes and facts as a formal ontology, with your own know-how indexed privately alongside. Relex gives your Claude that whole structure and grounds its drafting in verbatim law it caches from official and free sources, so the citations are filing-grade and checkable, while the real names stay encrypted in your browser. For US local law it searches LOCUS, 2.2M municipal and county ordinance sections, and fetches the exact section text to cite.
Maîtrisez la prise en charge, gardez le client
Research is one step of a matter, not the whole of it. Clients reach your practice by email, by WhatsApp or SMS, or through a guest link, and what they tell you becomes a structured case the agent picks up. Research, drafting, native cryptographic e-signature and invoicing run in one workspace. Through the Partner Network you stay the merchant of record through Stripe, at a flat $99 per month and 0% commission on what your clients pay you.
Relex est une plateforme logicielle. Ce n'est pas un cabinet d'avocats, elle ne remplace pas les avocats et ne fournit pas de conseils juridiques.
What you actually pay
Relex publishes its price. It is free to start, needs no credit card, and runs on the Claude subscription you already pay for, so there is no per-seat AI licence stacked on top. If you bill your own clients through the Partner Network, you stay the merchant of record and keep 100% of what they pay you, at a flat $99 per month with 0% commission. No per-matter platform cut, and no enterprise quote to negotiate.
Westlaw is a quote-based research subscription. Relex adds no research-database licence: it grounds citations in verbatim text from official and free sources and runs on the Claude you already pay for, at a flat $99/mo with 0% commission.
Les questions que l'on pose
Is Relex a legal-research service like Westlaw?
No. Relex does not resell a proprietary law database. It grounds your Claude's drafting in verbatim law it fetches and caches from official and free sources, with a verifier that rejects any citation not backed by cached text. Research is one grounded step inside running the whole matter, not a subscription you browse.
Where does the law Relex cites come from, and can I trust it?
From official and free sources, cached verbatim, and enforced by a verifier before a draft can cite it. Community legal packs that relied on model memory found roughly 30% of their citations wrong; Relex's citation discipline is mechanical, not aspirational, so filing-grade citations are grounded in text, not recalled.
Does Relex cover local and international law?
Yes. For US local law it searches LOCUS, 2.2M municipal and county ordinance sections, and fetches exact section text. Across jurisdictions it discovers authorities through official and free channels and grounds the verbatim text before citing.
Which one can I try today?
Relex. Signing up is free, takes one click, and needs no credit card. Westlaw is quoted and set up through Thomson Reuters' sales team.
What does legal research cost per search on Relex?
Nothing per search. Relex grounds citations by fetching and caching verbatim text from official and free sources on the Claude you already pay for — there is no per-search charge, no plan-coverage tier, and no "out of plan" document to decide whether to open.
How much does Relex cost compared with the others?
Relex is free to start, then a flat $99 per month with 0% commission if you bill your own clients through it, on top of the Claude plan you already have and with no separate per-seat AI fee. Most tools compared here quote enterprise pricing through sales or charge per user for their own AI. None of them publishes a referral or marketplace take rate; Relex publishes its own: 0%.
Autres comparaisons
Automatisez le travail autour du droit. Restez l'avocat.
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