Quick answer: A deck generator turns a prompt into a draft. The quality of the draft is set by the prompt, and the prompts that work read like a brief: the audience, the goal, the facts, and the design constraints. The AI cannot invent the customer, the numbers, or the story.

The prompt structure

  1. The deck type. Pitch, sales, webinar, talk, or training.
  2. The audience. Who is in the room and what they decide.
  3. The goal. The one thing the audience does after.
  4. The real facts. The product, the customer, the numbers, the quotes.
  5. The structure. The slides the deck must include.
  6. The design. The theme, the aspect ratio, and the brand constraints.
  7. The length. The slide count and the time.

A prompt template

Create a [deck type] for [audience].
The goal is to [the decision or the action].
The product is [the product] and it does [the job].
The customer is [the customer] with the problem [the problem].
The traction is [the real numbers].
The deck includes [the slide list].
Use the [theme] theme in [aspect ratio].
Keep it to [slide count] slides.
Only use the facts provided; mark anything missing as a placeholder.

The last sentence is the anti-hallucination guard. The fact-checking guide explains why it matters.

The facts are the founder's

The prompt must provide:

  • The customer and the problem, in the customer's words.
  • The real numbers, with dates.
  • The named competitors and the honest position.
  • The team and the background.
  • The pricing.

The AI drafts the structure and the wording; it does not invent the company.

The audience drives the structure

The same product produces different prompts:

The audience decides the slide order and the tone.

The design constraints

The prompt should state the theme, the aspect ratio, and the color and font constraints. A generator with a fixed set of themes avoids the slide-by-slide inconsistency; the professional rules still apply.

The iteration

The first output is a draft, not the final deck. The workflow is:

  1. Generate the draft.
  2. Replace the placeholders with the real facts.
  3. Cut the generic lines.
  4. Apply the company template.
  5. Export the editable PPTX and check.

What to avoid

  • The one-line prompt ("make a pitch for my startup").
  • Letting the AI invent the numbers.
  • A vague audience ("everyone").
  • No length or design constraint.
  • Accepting the first output as the final deck.

Frequently asked questions

What's the most important part? The real facts; the AI cannot invent the company. Can the prompt include a document? Yes, feeding the product spec or the notes is a strong input; see turning a document into a presentation. How long is the prompt? A short paragraph to a full brief; the facts make it longer. Does the tool remember the brand? A brand kit or a fixed theme carries the colors and fonts.

Brief the AI as you would brief a designer who knows nothing about the company. The facts in the brief are the ceiling on the draft.

Related guide: the AI presentation generator guide.