340 firms. One conviction.
ZAAN is used at boutique law firms, in-house legal teams and pro-bono clinics across 28 countries. The work looks different in every chair — the conviction that legal AI must be auditable, multilingual and genuinely useful does not.
Where we're most useful.
ZAAN is built to be general, but we're honest about where it shines. These are the four practice areas where our customers see the largest, most consistent impact.
Mergers & Acquisitions
SPAs, due diligence, disclosure schedules, earn-out modelling.
Tech & SaaS contracts
MSAs, DPAs, OSS reviews, vendor onboarding triage.
Financial services
ISDA reviews, regulatory MLAs, prospectus comparison.
Pro-bono & legal aid
Tenancy, employment, immigration — given freely under Open Bar.
Bär & Karrer
"We didn't replace anyone. We just stopped losing weekends."
A few we can talk about.
Most of our customers prefer not to be named — that's part of what we sign up for. These are the ones who agreed to put their names on the work, and on the numbers.
Replaced three weekends of triage with one Tuesday afternoon.
Macfarlanes' senior associates were reviewing 200-page SPAs by hand. ZAAN now does first-pass triage; the partners spend their hours where partners should.
Shipped a global PPA programme in half the legal cycle time.
Uría's energy team signs power-purchase agreements across 14 jurisdictions. ZAAN's multilingual recall lets a small in-house team punch above its weight.
Closed three EU–CN deals where nobody fully agreed in English.
Fangda's specialty is the cross-border deal where neither party negotiates in their first language. ZAAN's parity guarantee keeps both sides honest.
Got partners to actually use it — by sounding like them.
Mannheimer Swartling piloted three platforms; partners rejected redlines on two. ZAAN's voice modelling closed the gap: 91% accept rate after one quarter.
Turned vendor MSAs into a same-day turnaround.
WongPartnership's tech clients live and die on closing speed. ZAAN's MSA playbook reviews vendor papers in under five minutes, with a partner's redlines attached.
Helped a clinic clear nine months of housing backlog.
A legal aid clinic serving Lagos tenants was drowning in eviction defences. ZAAN's free tier handles the triage; the team handles the people.
How a century-old practice stopped sending associates to weekend war rooms.
The work before
Bär & Karrer's M&A practice sits at the heart of the Swiss large-cap market — listings on the SIX, cross-border deals out of Zurich, and the regulated transactions that pass through Bern and Geneva. A typical SPA review begins with two associates pulling 200–400 page documents apart by hand. The partners review the partners' work; the associates review everything else.
Dr. Mariel Hoch, who chairs the firm's M&A committee, describes it as "intellectually honest and operationally medieval." The cost was paid in weekends.
The change
Bär & Karrer piloted ZAAN with the firm's tech-M&A and capital markets group in March 2024. The pilot was deliberately narrow: SPAs, due diligence reports and disclosure schedules, on three live deals.
Within six weeks, partners were accepting 87% of suggested redlines on first pass. By month three, the firm had moved its standard playbooks into ZAAN, including the firm-specific carve-outs that took twenty years to write.
Today, every transactional team uses ZAAN. The associate hours saved aren't replaced by more associates — they're given back. Friday afternoons are deliberately unscheduled.
"What surprised us wasn't the speed. It was that the work got better. The partners caught more, because they read fewer wrong things first. ZAAN earned a place in our process the same way our best associates did — by being unfailingly precise, and quiet about it."
Quietly remarkable, on your kind of work.
Send us a contract you've reviewed — anonymised if you'd like — and we'll show you what ZAAN sees. No slides, no SDR follow-up, twenty minutes on the calendar.