MaraponeAI

01

The problem

Every AI vendor selling into construction arrives with the same general-purpose model behind the same chat box, and construction documents defeat it. A clause in a project manual, a cell in a door schedule and a note on a sheet are three different shapes for the same fact, and the expensive mistakes live in the gaps between them.

The other half of the problem is commercial. The documents a contractor puts through a tool like this — live tenders, subcontractor pricing, their own cost structure — are the most competitively sensitive things they hold, and handing them to an AI vendor whose next customer is the firm bidding against them is not a trade most people want to make.

02

What we built

A private inference stack running models fine-tuned on real construction documents, wrapped in a domain layer that knows a CSI section number from a sheet number, and hosted on infrastructure Marapone operates end to end. No commercial AI API sits anywhere in the path.

On top of it sit five programs — Blueprint Auditor, SpecChecker, AI Estimator, Bid Leveler and ScopeGuard — that hand each other their numbers rather than making an estimator retype them. Each customer's documents are processed in a workspace scoped to their account alone, nothing is used for training, and any project can be exported or deleted on demand.

03

We changed the model, and said so

Marapone used to sell these programs outright: one price, install it, we walk away. It was a clean promise and the wrong shape for the product. Building codes get amended, rate tables go stale, and the model reading a drawing set is measurably better than it was six months ago — a copy sitting on a laptop from last spring gets none of that. Half of what shipped started decaying the day it was delivered.

So the whole thing moved: Marapone runs the engine, the programs open in a browser, and customers subscribe from $49 a month with every improvement arriving the day it ships. It is a harder business — the renewal has to be earned every month rather than banked once — and it means being straight about the trade-off, which is that documents now come to Marapone to be read. Firms whose contracts genuinely forbid that get a private deployment into their own tenant as an enterprise arrangement, negotiated up front rather than implied by a marketing line.