Crimson raises $2.5m seed round
Crimson

Case intelligence for litigation teams.

Every document analyzed, every issue mapped, every deadline tracked. Crimson helps you run the whole case, from the first call to the final hearing.

Trusted by leading litigation and arbitration practices

Square One Law
Hexagon Advocates
Mantle Law
A&O Shearman
Duane Morris
gunnercooke
Humphries Kerstetter
Peters & Peters
Clarion Solicitors
FBFK
Dentons
Onside Law
Russells

Know the case better
than the other side.

Maeve Hanna
“From its user interface and integrations to case-specific outputs, Crimson is well designed for complex litigation and arbitration.”

Maeve Hanna

Partner

A&O Shearman
01 / 04

Everything
you need
to win the case.

At upload, Crimson maps the whole matter, from the parties and events to the issues and evidence. Everything it does builds on that understanding. Crimson keeps correspondence, deadlines, and next steps in order, drafts with the full context of the case, and updates its analysis as new material arrives.

Most legal AI is built for deals.
Crimson is built for disputes.

Deals close. Disputes keep moving: new evidence, shifting positions, hard deadlines, and an opponent testing every point. Crimson understands the whole case and works with your team at every stage, so you stay a step ahead throughout the proceedings.

  1. First call

    Know the case on day one.

    The facts, issues, and gaps in the client's files, assessed at the outset.

  2. Pleadings

    Plead from the evidence.

    Every allegation tied to the document that proves it.

  3. Discovery

    Find what matters first.

    Hot documents reviewed and analyzed against the full case file.

  4. Witnesses and experts

    Spot the inconsistencies.

    Contradictions between statements, emails, and reports flagged before cross-examination.

  5. Hearing

    Have the answer ready.

    Chronologies, binders, and cited answers on hand when the tribunal asks.

The difference
for litigators.

Clarity at every stage.

From early case assessment to trial, partners see every inconsistency, every gap in the record, and every document that changes the picture, before opposing counsel does.

More time for the work that matters.

Associates move from document review and chronology building to analysis, drafting, and preparing for hearings.

No setup required.

Crimson already understands how litigation works. There are no workflows to design, prompts to engineer, or agents to build.

Crimson understands the case file
in its entirety.

Ask an associate who has just been handed a 100,000-document case file a question, and they may find some relevant passages. They will struggle to be comprehensive: no mental model of the case, no sense of how the pieces fit, no systematic way to surface the less obvious evidence.

Ask the associate who has lived with the matter day and night for a year, and they reason across it: they know how the evidence fits together and where to look, even when the relevant material is spread across thousands of documents.

That is the difference between general legal AI and Crimson. 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.

  1. 01

    Upload

    Pleadings, discovery, correspondence, witness and expert evidence, from your DMS or Outlook.

  2. 02

    Ingestion

    Compute-intensive processing with domain expertise encoded into the pipeline.

  3. 03

    Case Model

    A purpose-built legal ontology mapping evidence, events, parties, facts, claims, defenses, and issues.

  4. 04

    Multi-agent retrieval

    Agents orchestrate the Case Model, full-text search, and embedding retrieval at question time.

  5. 05

    Cited answer

    Crimson traces every fact and inference to the supporting document, page, and passage.

Commercial litigation and arbitration

From warranty and shareholder claims to treaty arbitrations, Crimson maps every claim, defense, and issue across the record, so the team sees where the case is strong and where it still needs evidence.

Investigations and fraud

Reconstruct who knew what, and when. Crimson builds chronologies across emails, chats, and ledgers, ties every event to its source, and follows the money through the documents.

Trusted by leading litigation teams worldwide.

From Am Law 10 and Magic Circle firms to elite disputes boutiques.

Built for enterprise,
secure by design.

Leading firms trust Crimson with privileged material on disputes worth billions. Security is the framework behind everything we build, not a feature added later.

SOC 2 Type II

Independently attested controls for security, availability, and confidentiality, with no exceptions.

GDPR and UK GDPR

Data minimization, purpose limitation, and lawful processing, with data residency in your chosen Azure region.

No model training

We never use client data to train models. Zero data retention by AI providers and no human review.

Isolated environments

We isolate each firm's data logically and operationally, and never pool or share it between customers.

Encrypted end to end

TLS 1.2+ in transit, AES-256 at rest, SSO via Microsoft Entra ID, and role-based access controls.

Independently tested

Annual third-party penetration testing, continuous monitoring, and automated vulnerability scanning.