How Marcella compares.
Specific differences. No marketing language.
CoCounsel (Thomson Reuters)
$150 – $400/user/month
Routes queries through Anthropic's Claude via MCP. Your firm needs to approve Anthropic as a data processor. That takes 3 to 6 months at a mid-size firm.
Marcella runs inside your Microsoft tenant. No external AI vendor in the data path. Citation treatment engine crosses every publisher. CoCounsel has no Daubert attestation gate.
Clio + vLex
$1B acquisition · Nov 2025
Clio users search vLex's 110-country database. They don't get Prosser, Wright & Miller, or Collier without separate subscriptions. Marcella crosses every silo from the public record.
Westlaw / Lexis
Traditional platforms
Each is a silo. You pay per silo, per year. Marcella's citation treatment engine crosses every silo by mapping citation relationships from 10M+ public opinions. Full breakdown.
Public AI (ChatGPT, Claude, Gemini)
Used directly for legal research
They generate text, not retrieve from a legal corpus. That is the Mata problem: citations that look real and were never decided. Marcella retrieves. Six-item Daubert attestation. The architecture prevents fabricated citations.