How to make a presentation with AI that doesn't look AI-made

AI presentation makers can produce twenty good-looking slides in a minute. The trouble is that the slides look good and say very little. The fix is to split the job in two: decide what you’re saying with a chatbot, then let a slide tool handle how it looks.

What you need

• Your raw material: notes, a document, a report or even a voice memo transcript.
• A chat assistant such as Claude or ChatGPT for the story.
• An AI presentation maker. Our pick is Gamma, which turns an outline into a designed deck and exports to PowerPoint and PDF. Canva is the better choice if you need your company’s brand template.
• About 45 minutes.

Step 1: Write the story first

Most bad decks are bad because nobody decided the one point they make. Give the chatbot your material and ask for the argument, not the slides.

I need to present this to [audience] in [10] minutes. They care most about [what they care about].

From the material below, give me:

1. The one sentence I want them to remember.
2. A 7 to 10 slide outline. For each slide: a headline that is a full sentence stating the point (not a topic label), and 2 to 3 supporting facts taken from my material.
3. Which slide should show a chart, and what the chart should compare.

Use only facts from my material. Mark anything you’re unsure of with [CHECK].

[paste your notes or document]

Full-sentence headlines (“Support tickets fell 30% after the new help page”) are the single biggest upgrade. Your audience gets the point even if they only read the titles.

Step 2: Generate the deck

Paste the outline into Gamma (or Canva’s presentation generator). Ask for fewer words per slide than the default, and pick a plain theme. You can always add style later; you can’t easily remove clutter.

Step 3: Fix what AI gets wrong

Go slide by slide and check four things:

1. Numbers. Every figure should match your source. Search the deck for every [CHECK] tag.
2. Images. Replace generic AI images with your own screenshots, product photos or a simple chart. Real visuals carry more trust.
3. Words. Cut any bullet that just repeats the headline. If a slide has more than about 30 words, split it or move the detail to speaker notes.
4. Charts. Rebuild key charts from your real data. Don’t trust a chart the AI drew from memory. For process or concept slides, Napkin AI turns a paragraph into a clean diagram.

Step 4: Rehearse with AI as your audience

Paste your final slide text back into the chatbot:

“You are a sceptical [CFO / customer / teacher]. Ask me the five hardest questions about this presentation.”

Answer them out loud. If a question stumps you, add a backup slide.

Bottom line

Use a chatbot to decide the story and write full-sentence headlines, use Gamma or Canva to make it look good, then spend most of your time checking numbers and replacing generic images. You get a deck in under an hour that sounds like you, not like a template.