The world's most demanding consulting and finance teams rely on Lumin to draft, interrogate, and verify their work — without ever leaving Excel or PowerPoint.
Deployed at partner-led firms across New York, London, and San Francisco.
How Lumin works
Three pillars that sit where the work already lives, in Excel, PowerPoint, and the decks your team opens every morning. No new surface to learn, no ceremony to adopt.
Build
Lumin composes the first pass of the work inside Excel and PowerPoint, already formatted to the conventions your firm expects.
From a blank tab or a blank slide, an analyst can move from brief to structured artifact in a single working session. Schedules align, labels follow house style, and the output is something a senior is willing to open.
Draft / v.03
Composing
FY23–FY25E
Line item
FY23
FY24
FY25E
Revenue
142.8
168.4
198.1
+18.9%Gross profit
68.4
84.2
101.7
+20.8%EBITDA
24.1
31.6
42.8
+35.4%Free cash flow
11.2
18.4
27.9
+51.6%Source-linked to Schedule B, cell D42
Drafting
12%
Build, in context. Inside the workbook and deck.
Analyze
Lumin interrogates the analysis, surfaces the sensitivities that matter, and writes the paragraph that explains why.
Ask for the downside case, the margin bridge, the segmentation that changes the recommendation. The platform traces the logic across sheets and decks, returns the answer in plain prose, and points to the cells it read to get there.
Revenue sensitivity
78.0units
vs. base
+4.2%
Assumptions!D14
Linked to 7 downstream cells across 3 sheets.
Scenario
Analyze, in context. Inside the workbook and deck.
Verify
Lumin audits every figure in the deck against its source in the model, flags the inconsistency, and proposes the fix.
Before a book goes to a client or a committee, the platform walks the document the way a careful senior would: checking arithmetic, tying numbers back to source, and confirming that the words on the slide match the numbers beneath them.
Audit pass / live
08:42:11
Deck reconciliation
24 / 26 tied
Mismatch detected
Slide 14 states $42.8M, model cell E:F24 resolves to $41.6M.
Delta +$1.2M / 2.8%
Propose fix
Verify, in context. Inside the workbook and deck.
By the numbers
Lumin is measured the way your engagements are measured, in hours saved, models shipped, and figures that stand up to a second look from the partner on the file.
01 / Hours returned
11 hrs
Median weekly time returned to each associate after adopting Lumin inside Excel and PowerPoint.
Across 140 engagement teams, 2024
02 / Model throughput
3.4x
Faster turnaround on valuation and operating models without loss of auditability or version control.
Benchmarked against prior quarter baseline
03 / Checked outputs
98.6%
Of formulas, citations, and source figures verified by Verra before the deck leaves the desk.
Rolling 90-day accuracy audit
04 / In production
42
Consulting and finance firms across New York, London, and Frankfurt run Verra on live engagements.
As of Q1 2025
What partners are saying
Three partners, three firms, three unedited notes on what changed once Lumin started sitting in the workbooks and decks their teams were already shipping. No marketing department between you and the quote.
Lumin behaves like a junior analyst who has read every model we have ever built. It checks the math before I do, it flags the assumption I was going to question, and it does this inside the file I already have open. My associates ship cleaner work and I spend my evenings reading, not auditing.
We stopped losing Sundays to deck reconciliation. The team builds inside PowerPoint the way they always have, and Lumin keeps the figures, the footnotes, and the source tables in sync across every page. The first draft now arrives at the quality our second draft used to reach.
The rigor is the point. Lumin shows its work, cites the cell, names the source, and leaves a trail a partner can defend in a committee room. That is the quiet, institutional standard our clients expect, and it is the reason we kept the pilot.
See Lumin in your workflow
Book a working session with our team and see how Lumin fits inside Excel, PowerPoint, and the decks you already ship.
Enterprise ready
SOC 2 Type II, private deployment, and onboarding led by our engineers.
