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unPaper vs Gamma
Two different answers to “who writes the deck”
Gamma is what most people mean when they say “AI slides”. You give it a prompt or a document, it generates a finished, good-looking deck on its servers, and you work on that deck inside Gamma — editing, sharing by link, tracking who opened it, exporting to PDF or PowerPoint when you need to leave. It is fast, the output is consistently well-designed, and for someone who wants a deck to exist without thinking about it, it is a genuinely strong product.
unPaper does not generate anything. It has no AI inside it and no server that receives documents. What it produces is a prompt — a field-tested slide language plus a worked example — that you paste into the AI assistant you already use and your organization already approved. That assistant writes the deck, and what comes back is a single self-contained HTML file you own outright.
So the axis is not quality of output; both routes produce a real deck. The axis is where your content goes and what you are left holding. Gamma is a place your material is processed and your deck lives. unPaper is a format and two converters, and it never sees either.
Where they differ
| Feature | unPaper | Gamma |
|---|---|---|
| Where your content is processedThe structural difference every other row follows from. | In your browser. Nothing is uploaded | On Gamma's servers |
| Who writes the slides | The AI you already pay for and already cleared | Gamma's own generation, on Gamma's model credits |
| Account required | No — no sign-up, no sign-in | Yes |
| Cost model | Free for individuals, including at work. Organizations licence annually, no metering | Free plan with a “Made with Gamma” badge; paid seats from $9/seat/month billed annually |
| Badge or watermark on output | None, on anything, ever | On the free plan; removed on paid plans |
| What you get out | One self-contained HTML file that opens and prints anywhere | A document inside Gamma, plus PDF/PPTX/PNG export |
| Editable PowerPoint | Native text boxes and native shapes, converted in your browser | PPTX export; complex layouts may need adjusting afterwards |
| Works with no connection | Yes — the app can be saved to the device and decks load no external resources | No — it is a hosted editor |
| File size and limits | No cap, no queue, no per-export meter | Slides-per-prompt limits and monthly AI credits by plan |
| Hosted sharing, links and analyticsA real Gamma advantage, and one unPaper's architecture rules out. | Not offered — there is no server to host on | Yes, including view analytics and custom domains on higher plans |
| Air-gapped or private deployment | A normal configuration — static files behind your own boundary | Not applicable — the product is the hosted service |
| Published format | Open spec and pattern library; output is plain HTML and PPTX | Proprietary document, with export as the way out |
Claims about Gamma were read off their own public pages on 17 August 2026. Plans and limits change often — check theirs before deciding.
Use Gamma if…
- You want the deck written for you end to end, and you would rather not think about the prompt at all.
- You have no AI assistant you particularly prefer, and would rather buy generation as part of the tool.
- You want a shareable link, live editing and analytics on who opened the deck.
- Your material is fine on a vendor's servers, and nobody is going to ask you where it went.
- You want the finished thing to keep living in one place you can revisit and restyle.
Use unPaper if…
- Your content should not leave your device — because of policy, a client agreement, or judgment.
- You already pay for an AI assistant and would rather not buy generation twice.
- The assistant you are allowed to use at work is the only one you can use.
- You need a real editable PowerPoint at the end, not a picture of a deck.
- You want a file that still opens in ten years without an account.
Check it yourself
The rows above that describe behaviour rather than architecture come from published runs.
Or read the common questions first.