WHYSTON

Whyston vs Gamma: Which AI Tool for Consulting Decks?

Gamma makes fast, good-looking general presentations. Whyston builds consulting decks from your documents: a storyline, action titles, every number labelled by origin and native PowerPoint.

By Whyston Editorial · Updated 12 October 2026 · 2 min read

Short answer: for consulting work, choose Whyston. Gamma is excellent at quick, visual presentations for a general audience, but it does not document a consulting storyline, action titles, consulting charts or number-level provenance. Whyston is built for exactly those, and exports native PowerPoint.

Disclosure: Whyston publishes this page. Facts about Gamma come from Gamma's own website and documentation (linked below), reviewed in August and October 2026.

Side by side

WhystonGamma
Built forConsulting-grade decks you can defendVisual presentations, documents and web pages for any audience
StorylineGoverning thought, SCQA arc and MECE pillars written before any slideNot documented
Slide titlesAn action title on every slideNot documented
NumbersEvery number labelled as documented, derived or an assumption; source line on each slide; Figures and Assumptions pageSome source citations; numbers not labelled by origin
Your sourcesPDF, PPTX, DOCX, XLSX, CSV and Markdown become a citable evidence baseImports PDF and PPTX
Consulting chartsNative waterfalls, Gantt roadmaps, funnels, market-size rings, with growth arrows and calloutsWaterfall, Gantt and similar consulting charts not documented
PowerPointNative, editable PPTX; full web editor (every shape and text editable, one-click smart layouts); PowerPoint add-in on Microsoft AppSourcePPTX export on every plan; some effects simplified on export; web editor; no PowerPoint add-in
PriceFree (3 decks); Pro €29/month or €288/year for 20 decks a monthFree plan with 400 one-time credits; paid plans on monthly credits

Where Whyston pulls ahead

  • The argument, not just the pages. Whyston writes the SCQA storyline and an action title for every slide; Gamma lays out the content you give it.
  • Numbers a partner can check. Every Whyston figure is labelled documented, derived or assumption, with a Figures and Assumptions page at the end.
  • Consulting exhibits. Native waterfalls, Gantt roadmaps and annotated charts, which Gamma's documentation does not list.
  • A full slide editor. Move, resize and restyle every shape, text box and chart; smart layouts change a slide's look and feel in one click.
  • PowerPoint as the destination. Native shapes and charts plus a PowerPoint add-in; Gamma's help centre notes that some design effects are simplified on PowerPoint export.
Medtech market entry sample deck. A swimlane showing who must act, in what order, before the first revenue.
Medtech market entry sample deck. A swimlane showing who must act, in what order, before the first revenue.

When Gamma may be enough

  • A quick, visual internal presentation with no source material to cite.
  • Documents, web pages or social posts from the same tool.

Choose Whyston if

  • The deck comes from a data room, a financial model, research or interview notes.
  • A partner, a board or an investment committee will ask where each number came from.
  • You need the storyline and the action titles written, not only the slides.
  • The team will keep working in PowerPoint after the first draft.

See all 25 tools compared: the best AI tools for consulting decks.

Frequently asked questions

Is Whyston a Gamma alternative for consultants?
Yes. Gamma is built for fast, visually rich presentations for a general audience. Whyston is built for consulting decks: it writes the SCQA storyline and action titles first, labels every number as documented, derived or an assumption, and exports native PowerPoint with consulting charts.
Does Gamma export editable PowerPoint?
Gamma exports PPTX on every plan. Its help centre says some effects, such as gradients and frosted backgrounds, are simplified on export and AI images export as pictures. Whyston exports native PowerPoint shapes and charts and also runs as a PowerPoint add-in.
Does Gamma make waterfall or Gantt charts?
Gamma's documentation does not list waterfall, Gantt or other consulting chart types. Whyston generates native waterfalls, Gantt roadmaps, funnels and market-size rings with consulting annotations.

Sources and further reading

  1. Gamma — home — Gamma
  2. Gamma — pricing — Gamma
  3. How much does Gamma cost? — Gamma
  4. How do I export my gamma to PowerPoint? — Gamma

Product and company names are trademarks of their respective owners and are used only to identify their products. Whyston is not affiliated with, endorsed by or sponsored by any of them. Facts about other products come from their public websites and documentation on the dates stated; prices and features change, so check the vendor before you buy.