Short answer: for client deliverables, choose Whyston. Claude for PowerPoint makes editable slides and native charts, but Anthropic's own help page lists "final client deliverables without human review" among the uses it does not recommend. Whyston is built for that case: storyline first, action titles, and every number labelled documented, derived or an assumption.
Disclosure: Whyston publishes this page. Facts about Claude for PowerPoint come from Claude for PowerPoint's own website and documentation (linked below), reviewed in October 2026.
Side by side
| Whyston | Claude for PowerPoint | |
|---|---|---|
| Built for | Consulting-grade decks you can defend | A general assistant as a PowerPoint add-in |
| Storyline | Governing thought, SCQA arc and MECE pillars written before any slide | No consulting structure described |
| Slide titles | An action title on every slide | Not described |
| Numbers | Every number labelled as documented, derived or an assumption; source line on each slide; Figures and Assumptions page | Anthropic advises human review before final client deliverables |
| Your sources | PDF, PPTX, DOCX, XLSX, CSV and Markdown become a citable evidence base | Files and content you share |
| Consulting charts | Native waterfalls, Gantt roadmaps, funnels, market-size rings, with growth arrows and callouts | Native PowerPoint charts and diagrams; consulting chart types not listed |
| PowerPoint | Native, editable PPTX; full web editor (every shape and text editable, one-click smart layouts); PowerPoint add-in on Microsoft AppSource | Editable slides inside PowerPoint |
| Price | Free (3 decks); Pro €29/month or €288/year for 20 decks a month | Included in Pro, Max, Team and Enterprise plans |
Where Whyston pulls ahead
- Built for the client deliverable. Anthropic does not recommend Claude for PowerPoint for final client deliverables without human review; Whyston labels every number and lists every assumption so that review is fast.
- The argument first. SCQA storyline, MECE pillars and an action title on every slide.
- Consulting exhibits. Native waterfalls, Gantt roadmaps and annotated charts.
- 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.
- A whole deck from your data room, not slide-by-slide prompting.
When Claude for PowerPoint may be enough
- Turning bullets into diagrams or charts on slides you are already writing.
- Internal drafts you will review line by line.
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.
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