CASUS / AI-CHAT · 2026

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AI-Chat

The AI-Chat for legal documents

that cites and edits.

Ask CASUS about your contracts, get answers with sources that jump to the exact passage, and let the chat draft changes as proposals you approve.

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§ 1 - ANSWERS

Fig. 01 · Source in the document

AI-Chat

Answers you can

check at the source.

AI-Chat reads your documents and answers with source references. One click on a source jumps to the exact passage, highlighted in the document, so you never have to take an answer on trust.

(a)

Sources on every answer

(b)

One click to the passage

(c)

Optional web search and Legal Research

§ 2 - EDITS

Edit documents

by asking.

Ask for a new clause, a stronger position or a shorter wording. The chat prepares the change as a proposal with a visible diff, numbers new clauses correctly and inserts nothing until you approve.

(a)

Proposals with a visible diff

(b)

Correct clause numbering

(c)

Nothing changes without your approval

Fig. 02 · Proposal in Word

AI-Chat

§ 3 - ANATOMY OF AN ANSWER

Every answer,

traceable.

This is what a single AI-Chat answer looks like. Hover the notes to see how it stays verifiable.

2Sources countedEvery answer shows how many passages it relies on.

4Click to verifyEach source jumps to the highlighted passage in the document.

AI-Chat

Licence agreement.docx

2 sources

Answer

Can the licensor terminate without notice?

Only for good cause. Clause 12.3 allows termination without notice if the licensee breaches a material obligation and does not remedy it within 30 days.

Sources

[1]Clause 12.3 — Termination for cause

[2]Clause 12.1 — Ordinary termination

1Your documentThe chat answers from the files you attach.

3A direct answerPlain language first, with the reasoning right below.

§ 4 - WHERE YOU WORK

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

§ 5 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 5 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 5 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 6 - FAQ

Annex A

Questions about

AI-Chat.

Evaluating CASUS for your firm?

Get in touch →

An AI-Chat for legal documents answers questions about your contracts and files in plain language and can edit them on request. CASUS AI-Chat backs every answer with source references that jump to the exact passage, and prepares changes as proposals you approve.

Every answer shows source chips. One click on a source opens the document at the exact passage and highlights it, so you can verify the answer yourself.

Yes. AI-Chat drafts new clauses, rephrases text or adjusts a position as a proposal with a visible diff. New clauses are numbered correctly, and nothing is inserted until you approve the change.

Yes. You can switch on web search and Legal Research for a question. The chat then combines your documents with current web sources or court decisions and statutes, each with a source reference.

Yes. You can export chat results and drafts as Word or PDF files and continue working with them in your usual tools.

Yes. CASUS hosts data in Switzerland and the EU, never uses customer documents to train AI models and is built for the requirements of attorney-client privilege. Details are on the CASUS security page.

AI-Chat is included in the CASUS Standard plan together with everything else, for CHF 120 per user per month billed annually or CHF 145 billed monthly. You can try everything free for 14 days.