Finance still runs on slides. Pitchbooks, IC memos, IM decks, the artefacts that move billions are built one shape at a time, late at night, by analysts copying last quarter's template and praying the numbers still tie out.
Yet the tooling around those slides has barely moved. There is no diff. No history. No way to know who changed the EV/EBITDA multiple on slide 14, or whether the chart still matches the model. gedonus changes that, inside PowerPoint, without changing how anyone works.
Three primitives
We reduced the problem to three things a finance team actually needs:
- Generate: banker-grade slides from a prompt, on-brand and structured.
- Refine: versions and shape-level diffs, so every change is visible.
- Trust: every figure cited back to its source.
That's the whole product. Everything else is in service of those three verbs.
Why now
The hard part was never drawing the box. It was knowing the box was right.
Slide production is shifting to AI, and not just the drafting: increasingly, models will generate the first version of a deck and help verify the next one. That shift makes two old, unglamorous artifacts the most important infrastructure in the workflow: the diff and the source.
When a person builds a slide, you can ask them what they changed and where a number came from. When a model builds it, the only honest answers are structural: a diff that shows exactly what changed between versions, shape by shape, and a citation that ties every figure to the cell it came from. : the errors that survive are precisely the ones no reviewer catches by eye. Which is why verification has to be structural, not visual.
The human stays in the loop
gedonus is built on a simple division of labor: AI proposes, people decide. Every generated slide and every suggested change lands as a reviewable diff with its sources attached; nothing silently overwrites the deck. A person reviews it, inside PowerPoint, and approves or rejects it, the way a maintainer merges a pull request. The managing director's name is on the deck, not the model's; the tooling exists so they can sign it with confidence.
If your team lives in PowerPoint and dreads the review cycle, book a demo and we'll show you what version control for slides feels like.
