Gamma prompt guide

How to prompt Gamma

1. Cover Goal, Audience, Content, Tone and Format in every prompt.
2. Set a slide (card) count and a text density (brief, medium, detailed).
3. Name the audience and what they should decide or do after the deck.
4. Give real facts, figures, names and dates to work from; vague topics come back generic.
5. If you already have material, paste it (or import a file or URL) instead of generating from a topic.
6. Give a slide-by-slide outline when the order matters.
7. Say the image style (photo, illustration, icons, none) and any brand colours.
8. Limit bullets per slide and ask for a title plus one key message per slide.
9. Expect to refine: fix structure with the Agent, then polish individual cards.

The shape of a good prompt

[Goal: what the deck must achieve] [Audience: who, what they know] [Format: N slides, text density, presentation/doc/webpage] [Content: key points or slide-by-slide outline, real data] [Tone] [Visuals: image style, brand colours] [Closing: call to action]

Avoid

• A bare topic with no audience or goal
• Leaving slide count and text amount open
• Cramming several decks or purposes into one prompt
• Making up figures when you could paste real source material
• Expecting the first generation to be final

Example

Request a presentation about our Q3 results

Create a 10-slide presentation of Q3 results for our company leadership team (non-finance execs) so they can approve the Q4 hiring plan.

Tone: confident, plain-English, no jargon. Text: brief, max 3 bullets per slide, one key message per slide title.

Outline:
1. Title: Q3 2026 Results
2. Headline: revenue £4.2M (+18% QoQ)
3. Revenue by product line (chart)
4. Customer growth: 1,240 -> 1,510 accounts
5. Churn down 3.1% -> 2.4%
6. What worked
7. What didn't
8. Q4 priorities
9. Hiring ask: 6 roles, £420k
10. Decision needed + next steps

Visuals: clean corporate style, navy and teal, simple charts and icons, no stock photos of people.