Legal

Crimson

Website
Founded 2025Origin source ↗Checked 2026-09-15

Overview

Crimson is the case intelligence platform for complex litigation. We help litigators build a complete picture of each case – every argument, entity and event understood in context – and support them with analysis, drafting and case management across the lifecycle of the dispute.

Company description As recorded 2026-11-08
LinkedIn About
LegalCopilot & assistantBusinessesSmall businessesSubscription

Product & workflow

The Case Model is the second associate: Crimson builds it at upload and maintains it continuously, with full provenance for every fact, inference, and relationship.

Source-reported As recorded 2026-10-29

Customers & use cases

Founders & team

Mark Feldner

Founder/CEO

Former BigLaw litigator, now automating some of the most common tasks in high-stakes litigation. Crimson is the first AI platform purpose-built for complex disputes.

LinkedIn
Founder profile As recorded 2026-09-15
6team members reported
Source-reported As recorded 2026-09-15

Founded 2025 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedLondon, England, United Kingdom
Pricing evidenceNo pricing page confirmed
Maturity: Operating · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The company website explicitly reports customer or user adoption. This is a source-based assessment of a company claim; scale and revenue are not independently verified.

Company website: home Checked 2026-10-29

Trusted by leading litigation teams worldwide.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year
startup.observe Directory coverage · Sources & method