How It Works The Silo Problem Matter Memory Heppner Alternatives Pricing Join Waitlist
Retrieval-first legal intelligence

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Marcella works today.

Sign in with your Microsoft account. Citations from 10M+ indexed opinions, not generated. Daubert attestation on every output. Your data never leaves your tenant.

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Fabricated citations can't happen here

Mata v. Avianca sanctions cannot reach you. Citations are retrieved from an indexed corpus; if a case isn't in the index, it doesn't appear. Every output carries a six-item Daubert attestation.

One index. Every publisher.

Westlaw searches Westlaw. Lexis searches Lexis. Marcella maps citation treatment across 26 treatise families from the public record. The silo problem, solved.

Your tenant. Your data.

Client data never leaves your Microsoft tenant. No training on your queries. PII stripped before anything reaches the model. Privilege by architecture: the safe harbor the Heppner ruling points to.

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The Heppner Problem

United States v. Heppner (S.D.N.Y. 2026): documents created with consumer AI carry no attorney-client privilege. They are discoverable. Marcella runs inside your own Microsoft tenant, the safe harbor the ruling points to. Read the ruling.