Document intelligence for high-consequence engineering

Every document is supposed to agree. We find where they don't.

TrueLumen reads your drawings, specs, studies, and contracts as one body of work — then shows you every place they disagree, with the evidence cited, side by side.

Read-only · Runs on Google Cloud · Not used to train models

Flag 003 · inverter count Illustrative example · synthetic documents · fictional project
Design set · 90% E-201
ABC MV COLLECTION BUS · 34.5 kV INV-01INV-02INV-03 INV-04INV-05INV-06 · · · INVERTER SCHEDULE TOTAL QTY UNIT RATING 4.2 MVA 14 MV SINGLE-LINE CEDAR FLAT SOLAR · 180 MWac SHEET 4 OF 22 REV C ↗ E-201, sheet 4 · inverter schedule
Version of record Contract · Exh. B

Exhibit B — Technical Parameters

3.1 Capacity. The System shall have an aggregate nameplate alternating-current capacity of not less than one hundred eighty (180) MWac measured at the Point of Interconnection.

3.2 Inverters. The System shall comprise sixteen (16) inverter units of the make and model set forth in Exhibit O, each rated not less than 4.2 MVA continuous at 35 °C ambient, arranged in accordance with the Collection System design.

3.3 Substitution. No substitution of the units specified in Section 3.2 shall be made without the prior written consent of Owner.

↗ Signed contract · Exhibit B § 3.2

The drawing shows 14 inverters. The signed contract requires 16. Nobody noticed for two revisions. Illustrative example

Partners

Built with the people who set the bar.

TrueLumen is co-built with AES, a global energy company, and backed by AI Fund.

Co-build partner Global energy company

A global energy company that builds and operates power at utility scale. TrueLumen is co-built with AES engineering teams, who review gigawatt-scale renewable projects — the sharpest version of the problem we solve, where a hidden discrepancy becomes costly rework, a schedule slip, or a safety failure once the plant is energized.

Their reviews set our bar, and we test new capabilities against real design sets.

Investor

TrueLumen is backed by AI Fund, the venture studio founded by Andrew Ng.

The problem

The disagreement is silent.

A gigawatt-scale project lives in hundreds of drawings, datasheets, and specifications that are all contractually obligated to agree. They often don't — and nobody notices. The mistake is cheap to fix on the page and ruinous to fix in the field: a change order, weeks of rework, at worst a safety failure once the plant is energized.

A single missed decimal nearly triggered a near-million-dollar order for equipment that was never needed.
One near-miss, caught by hand

Today the only thing standing between a buried mismatch and the field is the reviewing engineer — reading hundreds of pages one at a time, inside a ten-day window. It leaves no record, can't be verified, and gets harder every year as the volume of review races ahead of a shrinking pool of senior engineers.

How it works

Comprehend, reason, ground.

Three things, in order — and it never asserts anything it can't trace to a source.

01

Comprehends every document

Prose, tables, diagrams, scans — the meaning, not just the text. A value on a drawing lands in context, not as a floating number.

PROSE TABLE DIAGRAM
02

Reasons across the whole set

What agrees, what conflicts, what supersedes. Every check is held to the version of record — the signed contract and specification — never just the latest file in the folder.

CONFLICT E-201CONTRACTSTUDY VERSION OF RECORD
03

Grounds every answer in evidence

Each flag carries a one-click citation to the source that governs it. Open it, check it, defend it in the room. Nothing is asserted that can't be traced.

FLAG 003 CITES EXH. B § 3.2
Why teams trust it

In high-consequence work, an answer you can't check is worthless.

Four commitments hold on every review. Here's what each one looks like in practice.

Surface, never decide

It points out that two numbers disagree. It never overrules your engineer or declares a rule broken.

What it writesConductor on E-114 is 350 kcmil; the ampacity study (tbl 3) gives 500 kcmil for this run.
What it never writesE-114 violates code. Change the conductor to 500 kcmil.

High-certainty only

Low-volume, high-value comments — never a long laundry list. Below the precision floor, you don't see it.

4 surfaced31 suppressedIllustrative example

Read-only by design

TrueLumen reads your documents and never changes them. It is not a new system of record.

File upload · availableDocument-system connectors · planned

Coverage you can audit

Every review states what was checked, what wasn't, and against which sources — so gaps are visible, not assumed.

Illustrative example

Pages reviewed184 / 184
Ground truthContract + 5 exhibits, 5 studies
Not checkedcivil set · 2 diagram types
Where it fits

Fits the review you already run.

Upload the document set and get back the artifact your team already exchanges: a cited comment log.

Web portal Connectors planned
  • A comment log — drawing, page, comment, citation, severity — plus the referenced set.
  • Delivered as a cited comment log your team can export.
  • Each customer organisation has its own separate workspace.
Illustrative example · comment log · electrical
DrawingPgCommentReferenceSeverity
E-2014Inverter count reads 14; contract specifies 16.Exh. B § 3.2High
E-1142Conductor size below ampacity study result for this run.Ampacity calc, tbl 3High
E-3087Ground-grid resistance target conflicts with the grounding study.Grounding study § 5Medium
E-1021Sheet naming departs from the agreed convention.Exh. B-5Low
Security & data

Built for confidential work.

Your contracts and design data are the most sensitive documents on the project. Here is how they are handled.

Read-only

TrueLumen reads your documents and never changes them.

Runs on Google Cloud

TrueLumen runs on Google Cloud. Sign-in requires a password and a one-time code sent by email.

Not used for training

TrueLumen does not use your documents to train models.

Separate workspace per customer

Each customer organisation has its own separate workspace. Other customers cannot access its documents or results.

Who it's for

Wherever right and wrong are objective, and being wrong is expensive.

We're co-built with teams reviewing gigawatt-scale energy projects — the sharpest version of the problem. From there the path is a single axis: the higher the consequence, the higher the value. Each step is a new customer, not a new product.

Energy EPC & engineer-of-record Independent engineers Regulated fields beyond
FAQ

Questions engineers ask first.

Does TrueLumen make engineering decisions?
No. It surfaces where documents disagree and cites the governing source. It never overrules your engineer, declares a rule broken, or tells you what to change. The engineer of record keeps all judgment and all liability.
Where does our data go — and does it train a model?
TrueLumen runs on Google Cloud. Each customer organisation has its own separate workspace; other customers cannot access its documents or results. To analyse documents, their content is processed by AI models from our model providers. TrueLumen does not use your documents to train models.
Do we have to move our documents into TrueLumen?
No. TrueLumen reads your documents and never changes the originals. It is not a new system of record. Connectors to document systems such as Procore and Bluebeam are planned.
How accurate is it? Won't it flood us with false flags?
It surfaces only high-certainty comments — low-volume and high-value, never a long laundry list. Everything below the precision threshold is suppressed, and every review states what was and wasn't checked so you're never guessing about coverage.
What does it check against?
The version of record — the signed contract and specification — never just the latest file in the folder. Documents are also checked for consistency across the set.
Who is it for today?
Engineering teams reviewing high-consequence, gigawatt-scale energy projects. From there we expand along a single axis — the higher the consequence of being wrong, the higher the value — into EPCs, independent engineers, and other regulated fields.

Founder

Founder and CEO

An engineering executive and hands-on AI builder: formerly Vice President of Engineering and Senior Principal Engineer at Mastercard, Chief Technology Officer at Sunsea AIoT, and Technical Leader at Cisco.

LinkedIn profile: Abraham Zou

Get in touch

Bring us a set of documents that are supposed to agree.

We'll run a review against your ground truth and show you what we find — every flag cited, so you can check our work before you believe a word of it. For engineering leaders evaluating the product, and for investors, the same door.

Request access info@truelumen.ai