I Thought AI Presentations Would Be Terrible. Gamma Proved Me Wrong
How we tested: Standard plan tested of I Thought AI Presentations Would Be Terrible. Gamma Proved Me Wrong over multiple days. Full methodology on my About page.
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I have never seen an AI-generated slide deck that didn't make me wince.
They all look the same. Stock photos of people shaking hands. Gradient backgrounds that scream "designed by a template from 2018." Bullet points that go on forever. Every AI presentation tool I'd tried before Gamma made the same mistake: it optimised for speed, not quality. Fast slides. Bad slides.
So when a founder friend told me she'd built her Series A pitch deck in Gamma, I laughed. "You let AI design your fundraising deck?" She didn't laugh back. "Come see the deck," she said. I went. And I had to eat my words.
What Changed My Mind
Gamma works differently than other AI presentation tools. You don't pick a template and fill in the blanks. You write a prompt, one or two sentences about what you want to present, and Gamma generates an entire deck: outline, slides, layout, images, typography, the works.
I tested it with a prompt I'd normally spend hours on: "AI trends in healthcare for 2026 — five key shifts, aimed at hospital executives."
Thirty seconds later, Gamma gave me 12 slides. A title slide with a clean medical-themed graphic. Five section slides, each with a clear heading and supporting visual. Data slides with placeholder charts. A summary slide with three takeaway points. The color palette was navy, teal, and white, professional, not flashy. The typography was readable at conference-room distance.
I edited nothing in the first draft. I just sat there, staring.
It wasn't perfect, the charts were fake (just styled boxes), some slide titles were too wordy, and the medical graphic was generic. But the structure? Bulletproof. The layout? Better than what most non-designers produce in PowerPoint after three hours. The speed? Unfair.
The Editing Experience. Where Gamma Shines
Here's the part I didn't expect: Gamma is actually fun to edit in.
Every slide is a block you can drag, resize, or delete. Type / to add anything, a video, a chart, a code snippet, a poll, even a Figma embed. It's Notion-level flexibility inside a presentation tool. I rewrote a slide by typing /bullet and got 5 bullet styles. I wanted a comparison table? /table. I needed a full-bleed image? Drag the image block to full width. No menu hunting. No right-click purgatory.
The AI rewrite feature is the sleeper hit. Select any text block, hit the magic wand, and Gamma rewrites it in a different tone, concise, professional, storytelling, or persuasive. I used this on every single slide in a pitch deck I was helping a friend with. Cut the word count by 40%. Kept the meaning intact.
"I presented a Gamma deck to our board last month," said Marcus Chen, a product lead at a healthtech startup in Toronto. "Nobody asked what tool I used. They asked when we could ship the product. That's the goal, right? The tool should disappear."
The Things Gamma Still Gets Wrong
I don't want to oversell this. Gamma has sharp edges.
Image generation is weak. Gamma uses AI to place images, but they're often generic stock-style photos. You can upload your own, but the AI-generated visuals are not Midjourney quality. They're fine for internal decks. Embarrassing for client-facing ones.
Long documents lose coherence. Past 30 slides or 10 pages, Gamma starts repeating itself. The same graphic appears on slide 8 and slide 22. The same phrasing pops up in different sections. You have to manually check for repetition.
Export is limited. Gamma exports to PDF and PowerPoint, but the PowerPoint export is a flat version. Animations, transitions, and interactive embeds don't carry over. If your client uses PowerPoint religiously, you'll need to rebuild.
No offline mode. Gamma is browser-only. No desktop app, no offline editing. I learned this the hard way on a flight from New York to London. Twelve slides, zero edits.
Real Story: The Unexpected Use Case
Priya Sharma teaches computer science at a university in Bangalore. She assigned her students a group project on machine learning basics. Every semester, she got the same PowerPoints: cluttered slides, tiny fonts, clip art from 2012.
This semester, she told them to use Gamma. "The difference was night and day," she said. "Students who can't design to save their lives suddenly had clean, readable slides. Their content was the same, but the presentation made it look professional. I graded them on content, not aesthetics, but the aesthetics helped me focus on the content."
She also found a workflow hack: students published their Gamma decks as web pages and shared links instead of emailing PPT files. No version confusion. No "the font broke on my laptop."
The Verdict (from a Skeptic)
Gamma is the first AI presentation tool I'd recommend to someone who cares about design. Not because it's perfect, but because it's fast enough and good enough that you can iterate into something great.
Use it for: internal decks, pitch drafts, educational content, team updates, and anything where speed matters more than pixel perfection. The editing experience is enjoyable. The AI rewrite feature saves real time.
Don't use it for: client-facing investor decks (unless you're willing to swap the AI images for custom ones), presentations over 30 slides, or anything that needs precise PowerPoint export fidelity.
I started this review ready to hate Gamma. Two weeks later, I've made seven decks in it. One of them I actually presented. Nobody asked what tool I used. They asked when we could start.
Tested May 2026 on Gamma.app Pro plan ($16/month). Features may vary by plan and region.