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Presentations and slides with AI

From outline to finished deck in half an hour: how to choose the right tool (Gamma, Claude, ChatGPT, Canva, PowerPoint and Google Slides), write a good brief, fix charts and numbers, and avoid "AI-looking" slides.

Mattia PanattaUpdated 16 October 20269 minBeginner

In short

  • A good presentation starts from a good outline: have AI work on the message first, the design second.
  • Gamma is fastest for a complete deck; Claude and ChatGPT build slides from documents and data; Canva, PowerPoint and Google Slides when you must follow a company template.
  • Numbers in charts must always be checked at the source: AI sometimes rounds or invents them.
  • Less text per slide: one sentence stating the conclusion, an image or chart that proves it.

Message first, slides second

The typical flaw of AI-made presentations is that they are pretty and empty: lots of tidy slides, no strong idea. The reason is starting from the design. Start from the outline instead.

Presentation outline

I need to present [topic] to [audience] in [minutes] minutes. The goal is that at the end they [what they should think or do]. Propose an outline of [number] slides. For each slide write:

  • the title as a full sentence stating the conclusion (not “Results” but “Online sales grew 30%”);
  • what to show (chart, image, example, quote);
  • what I say out loud, in two lines. Before writing it, ask me three questions if you are missing information.

Read just the slide titles one after another: if they tell the story on their own, the presentation works.

Which tool to use

If you need to… Use Why
Make a complete, good-looking deck in minutes Gamma Generates slides, layout and images from an outline or document
Turn a report, PDF or spreadsheet into slides Claude or ChatGPT They read the document, extract the points and build slides with charts
Follow the company’s template PowerPoint (Copilot) or Google Slides (Gemini) They work inside the file and theme you already use
Very visual posts, flyers and decks Canva Ready-made templates and AI tools for images and text

Features change often between free and paid plans: check the pricing page before choosing.

From document to slides

If you already have a document (a report, a proposal, financial statements), don’t rewrite it: upload it.

Slides from a document

From the attached document create an 8-slide presentation for [audience].

  • Slide 1: the main message in one sentence.
  • Slides 2-7: one idea per slide, conclusion-title and at most 3 short points.
  • Slide 8: what I ask the audience (decision, next step). For every number you use, state the page and table of the document it comes from.

Charts and numbers

Ask AI to suggest the right chart type (bars for comparisons, lines for trends over time, no pie with more than 4 slices), then check every figure. If the assistant builds the chart with data analysis, ask to see the table behind it.

The check you can't skip

Before presenting, compare every number, name and date with the original source. A single wrong figure in front of a client costs more than all the time AI saved you.

Avoiding “AI-looking” slides

  • Generic images (robots, glowing brains, handshakes): replace them with real photos, your own diagrams or a chart.
  • Lists of 6-7 bullets: keep three at most, say the rest out loud.
  • Same tone everywhere: add a concrete example from your work or your client.
  • Random fonts and colours: set the palette and fonts (or the company template) once and ask AI to stick to them.

Rehearsing

The last step is the most underrated: get questioned. Paste the slides and ask AI to act as the most critical audience member, with the 5 hardest questions you could face. Preparing for those is worth more than any animation.

In one line

AI gives you the slides in half an hour; the message, the right numbers and the answers to questions are still your job.

Sources

Informational content, current as of the date shown. Prices, models and rules change often: always check official sources. Written with the support of AI tools and reviewed by the author.

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