PROBATUM
Evanston, IL · Free & Open Source Legal AI
Air-Gapped AI · Free Software · Apache 2.0

Five million pages of discovery, read on a box you own — on a machine that never touched the internet.

The average big case is now five million pages. Cloud AI can read them — but only by copying the privileged file to a vendor's servers. Probatum reads them locally on hardware you own, inside your building, with the network cable pulled.

100% Free Software. No $6.5M fleet doors. No license fees. No support contracts. Run Probatum locally on a single workstation or cluster.

Download Probatum · Free · 277 KB → Hardware Minimum
Local Matter Execution
Pages ingested
5,000,000
Hardware minimum
1 Box (~$2,959)
Software License
Apache 2.0 Free
Bytes sent to cloud
0
Pages / case
5Mavg. big case
Egress
0bytes, ever
Hardware Spec
Minisforum MS-S1
Cost
$0Free Software
The scale · Big litigation

Every prompt into cloud AI is a privileged file leaving the building.

A modern big-litigation matter averages five million pages of pleadings, discovery, medicals and produced comms. Case files, medical records, settlement numbers — cloud AI copies every one of them to a vendor's servers the moment they're prompted. Your confidentiality duty doesn't outsource, but the vendor's terms of service now sit inside your ethics posture.

Probatum solves this by running 100% locally on hardware inside your building. Zero cloud egress. Zero data leak. Forensic chain-of-custody logging standard.

1. Zero Cloud Egress
No vendor account, no API keys, no subscription. Privileged files never cross your firewall or touch third-party servers.
2. Free Apache 2.0 License
Probatum is free software. Download the bundle, inspect the source, adapt it to your team's exact workflow.
Cloud AI vs. Probatum
Privileged data locationYour local machine
Software licenseApache 2.0 Free
Breach surfaceZero (air-gapped)
Network requirementsNone (cable pulled)
What it does · Sample matter

Drop five million pages on Friday. This is waiting at 8am Monday.

On the fictional sample matter Morgan v. Lakeshore Freight & Logistics, Inc., Probatum read the full production — pleadings, discovery, 4.2M produced pages, 240,000 medicals, 96,000 emails — extracted the timeline, entity graph, and issue flags, and staged the drafts. Machine flags, human decisions: nothing files itself.

Among the flags: a produced email chain that contradicts the defendant's sworn interrogatory answer on dock-plate maintenance. Every flag cites the source Bates page it came from.

The 8am report · 5M-page run
Timeline events extracted
18,442
Entities & witnesses
3,207
Contradictions surfaced
214
Drafts staged for review
62
Forensic Hash Ledger
SHA-256
Every run, on the record
Network egress0 Bytes
Cloud APIs calledNone
Source-file integritySHA-256 verified
Third parties holding dataZero
Chain-of-custody logPer file, per run
Security & sovereignty · Zero egress

The answer your GC and your malpractice carrier will love.

Every run logs network state and produces a hash-verified manifest of every source file — before and after. No cloud AI, no data processor agreements, no third party to audit. When a client asks "does AI touch my file?", your answer is: yes — on hardware we own, inside our building, that has never been connected to the internet.

Unplug it and the data still never moved.

Hardware Minimum · The Honest Answer

You don't need 500 GPUs. You need one box.

The minimum hardware to run Probatum locally:

Recommended Single-Unit Hardware Spec
Minisforum MS-S1 Max

AMD Ryzen AI Max+ 395, 128GB unified memory, runs 128B+ parameter models locally. ~$2,959. Buy it yourself, from them, not from us.

One box per person on your team. Air-gapped. Yours. No fleet required for most operations.
Parallel Processing / Dual-Unit Clustering
For larger matters requiring parallel processing, two units cluster together (235B model, dual-unit config). Still no data center.
Open Source Sovereign Legal Intelligence

The software is the gift. Download Probatum.

Apache 2.0. No account, no license fee, no support contract. Clone it, change it, use it.

Probatum Jury · App + AI Agent Bundle · Free
Download Probatum · Free · 277 KB →
kissmysaas.skin/download?kit=probatum-jury
FAQ · Questions AmLaw firms ask

Frequently Asked Questions.

Where does our client data actually go?
Nowhere. The model lives on the machine in your building, and runs with the network cable unplugged. Every run logs network state and produces a hash-verified manifest of every source file. Zero bytes leave the building — provably.
What hardware do I need to run Probatum?
You don't need 500 GPUs. The recommended hardware minimum is one Minisforum MS-S1 Max (AMD Ryzen AI Max+ 395, 128GB unified memory, ~$2,959). Buy it yourself, directly from them. One box per user on your team.
Is Probatum really free?
Yes! Probatum is released under the Apache 2.0 license. No account registration required, no license fee, no support contract. Clone it, change it, use it.
What does it produce for discovery review?
A hash-verified manifest of the full production, a timeline of every event across every document, an entity graph of every actor and witness, a contradictions list with cited Bates pages, and staged drafts for attorney review.
How do we handle large matters requiring parallel processing?
For larger matters, two Minisforum MS-S1 Max units cluster together (235B model, dual-unit config). Still no data center required.
Can we rely on its work product?
You rely on your attorneys — the machine stages the work. It reads, extracts timelines, flags issues, and drafts for attorney review. Nothing files itself. Every flag cites the source document it came from.
The builder · Evanston, IL
MadBrad Smith, founder of Probatum
MadBrad Smith
Founder · CEO · Builder · Author
South Side of Chicago born & raised. 34 years as a first assistant director in film & television — movies, TV, music videos, commercials. Now: autonomous-systems architect. Sober since Feb 21, 2026.
The Founder

One builder. No sales team. Honest floor, zero oversell.

I'm MadBrad Smith. Thirty-four years running film sets taught me one thing that turned out to be the whole job: span of control. Nobody — no commander, no first AD, and no AI orchestration layer — runs more than five direct reports well. I build AI systems the way I ran sets: narrow specialists, clean handoffs, one outcome. Probatum is that discipline in code.

The software is the gift. The hardware spec is the honest answer to "what do I need." The engine underneath — Developum AI — is mine. The catalog it powers lives at KissMySaaS.Skin.

Here's what it does, here's what you need to run it, here it is.

Full founder bio, slate & books · founder.developumaiengine.com
On set
34yrs
1st AD · film & TV
Originals
15
Features & series, in-house
Apps shipped
30+
On the Developum engine
Books
2 · 6vols
Field-notes memoirs
Engine
1
Developum AI · proprietary
Software License
Apache 2.0
Free & Open Source
The credo · Why Probatum is built the way it is
i.
Name the thing you don't understand.
Naming it is how you build the bridge to it.
ii.
Friction will show up.
Have the patience and the grace ready before it does.
iii.
Append-only honesty.
Log the friction in public — your own included.
iv.
A rented agent is never your agent.
Your machine, your keys, or no cloud at all.
v.
Span of control.
Nobody runs more than five — not commanders, not first ADs, not me.
vi.
It was never just me.
It was us. Plural specialists — AI and human — coordinating.
"Here's what it does, here's what you need to run it, here it is. The software is the gift. The hardware spec is the honest answer."
— MadBrad Smith
Read the receipts
Probatum · Sovereign Legal Intelligence

Five million pages. Your building. Zero bytes to the cloud.

Download Probatum Free → View Hardware Spec →
Compliance & trust
Built for the standards your GC already lives by.
Audit
SOC 2 · Type II
Audit engaged
Privilege
ABA Rule 1.6
Confidentiality-aligned
Privacy
GDPR · CCPA
Data-subject aligned
Health data
HIPAA-ready
On-prem, no BAA needed
Egress
Zero bytes
Air-gapped by design
© 2026 PROBATUM · A DIVISION OF DEVELOPUM AI ENGINE SOC-2 TYPE II · AUDIT IN PROGRESS Powered by Developum AI Engine · Apache 2.0 Free Software.