SlidesAI vs Gamma: Pricing, Input Limits and PowerPoint Export Compared

The table settles the facts. What it cannot settle is which one your team should pay for, because that depends on two questions neither pricing page asks: where do your decks have to live, and does the content already exist as a document longer than a page?

Is SlidesAI better than Gamma?

SlidesAI is better when your team lives inside Google Slides or PowerPoint, the input is a page or two of notes, and the goal is bullet slides in the deck you already have open. Gamma is better when you want the most polished first draft, present from a browser or share links, and need to evaluate at $0 before anyone signs. Neither is better in the abstract; they assume different homes for the deck and different amounts of input.

SlidesAI is an add-on first and a product second. You install it in Google Slides (there is a PowerPoint add-in on the Microsoft marketplace as well), paste text, choose a slide count and a look, and it writes slides into the file you are in. That is its whole advantage: no export, no font substitution, no second tool. It is also its ceiling. The slides are what an add-on can draw inside a host application, which in practice means title-and-bullets layouts that look like the theme you picked. Reviewers consistently describe the output as clean and basic, and that matches the product’s positioning on its own site, which leads with students and educators.

Gamma starts from the opposite end. It is a web editor that produces scrolling, card-based decks with real visual variety, generated from a prompt or pasted material, and the first draft looks deliberate in a way an add-on cannot match. The trade-off is the handoff. A Gamma deck becomes a .pptx only through an export, and Gamma’s own help center says that export reflects Present Mode rather than Edit Mode and that layout or styling may differ. If nobody opens the file outside Gamma, that never matters. If a client or an executive opens it in PowerPoint on Monday, it can.

Which is cheaper, SlidesAI or Gamma?

SlidesAI at the door, and close to a tie at the tier a working team actually needs. SlidesAI Pro is $10 a month on annual billing against Gamma Plus at about $9, so the entry tiers are a wash. But SlidesAI Pro caps input at 6,000 characters and 120 presentations a year, which is ten a month. A team that makes a deck a week and pastes anything longer than two pages is on Premium at $20.83, against Gamma Pro at about $18. Call it even on the seat.

The meters are where the two diverge, and they meter different things. SlidesAI meters the input: characters per presentation, presentations per year and a small annual pool of AI credits (600 on Pro, 1,200 on Premium) for images and rewrites. Gamma meters the output: credits per card and per image, 1,000 a month on Plus and 4,000 on Pro, with unused credits rolling over to double the plan size and a top-up rate of 1,500 credits for $6. Gamma’s meter is easier to live with because you can buy your way past it cheaply. SlidesAI’s character cap cannot be bought past at any tier.

Both bill per seat. Five people on the mid tier is roughly $100 a month on SlidesAI Premium and roughly $90 on Gamma Pro, before any Gamma top-ups, and both numbers move with every hire. Neither publishes a team price that flattens with headcount.

Does SlidesAI work with PowerPoint?

Yes. SlidesAI began as a Google Slides add-on and that is still where it is most at home, but it also ships a PowerPoint add-in listed on the Microsoft marketplace, and the slides it writes there are native PowerPoint objects. That puts it ahead of Gamma on one specific question: if the deck must be a PowerPoint file with real text boxes on your master, SlidesAI never leaves PowerPoint, while Gamma has to export into it.

What SlidesAI does not do at any tier is take a long document as the input. The pricing page lists Document Upload on Pro and Premium, and the same page lists a 6,000 and 12,000 character cap per presentation. SlidesAI does not publish how the two interact. Until it does, the safe reading is that a 30-page proposal has to be cut down to about four pages of text before it goes in, and that the AI then writes slides about that text rather than converting it faithfully.

Can Gamma or SlidesAI turn a PDF report into a presentation?

Partly, and not in the way the phrase implies. Both tools accept material you already wrote, and both then generate a new deck about it: they summarize, rephrase and restructure to fit their layouts. For a topic brief that is what you want. For a board paper, an audit report or a submitted proposal it is a problem, because the wording in the deck has to match the wording in the document, and nobody on either side wants to re-check forty pages against fifteen slides to find where the AI improved a sentence.

The input caps make it worse. On SlidesAI the 12,000-character ceiling means most reports never fit at all. On Gamma there is no hard cap, but a 20-card document with premium images costs 320 to 1,070 credits by Gamma’s own example, so a long report with figures on a Plus plan can spend the month’s allowance on one deck and a regeneration.

SlidesAI vs Gamma vs Plus AI

Plus AI is the third name that comes up in this search, and it sits between the two. Like SlidesAI it is an add-in that generates inside PowerPoint and Google Slides, so there is no export. Unlike SlidesAI it takes document uploads (PDF, docx, txt) on its Pro tier at $20 per user per month annual with a 3,000-credit monthly allowance and a published range of 40 to 170 credits per task. If SlidesAI’s output is too plain and Gamma’s export is too risky, Plus AI Pro is the obvious middle purchase for a team on Microsoft 365 or Workspace. The two are compared line by line on Plus AI vs Gamma.

Ranked on where the file lives: SlidesAI and Plus AI (native from the start), then Gamma (export). Ranked on how much you can put in: Plus AI Pro, then Gamma, then SlidesAI. Ranked on the look of the first draft: Gamma, then Plus AI, then SlidesAI. Ranked on entry price: SlidesAI Pro at $10, Gamma Plus at about $9, Plus AI Basic at $10 but without uploads.

Which should a US team actually buy?

Buy SlidesAI if your team works in Google Slides or PowerPoint, the input is short (talking points, a meeting summary, a lesson outline), you make fewer than ten decks a month per person, and you want the lowest price that writes usable bullet slides into the file you already have open. Take Premium, not Pro, if anyone will paste more than about a page.

Buy Gamma if your decks are presented from a browser or shared as links, you want the best-looking structured draft in the category, you need to evaluate at $0, and an occasional layout shift on a .pptx export is a nuisance rather than a contract problem. Budget for top-ups if the decks carry images.

Buy neither if the content already exists as a document longer than a few pages. Both tools are authoring environments with an AI in them, and both meter the input in a way that a written report breaks. Most business decks are not authored from nothing. They are a report, a proposal, an analysis or a board paper that is already written, reviewed and approved, and now has to be presented on Thursday. Paying per seat to have an add-on rewrite four pages of it, or per credit to have a canvas re-author all of it, is the wrong tool for that job.

The third route: convert the report you already wrote, at a flat price

Docslide takes the document as the input. Upload the PDF or Word file, up to 20 MB, or paste the text, and it reads the sections and figures, writes a native .pptx with real editable text boxes, puts the supporting paragraph into the speaker notes, and names the source section under every slide so a reviewer can trace each claim back to the report. There is no character cap, no presentations-per-year count and no credit meter. It runs in the browser with nothing to install, and the .pptx opens in PowerPoint, Keynote or Google Slides.

Two things it does not do, stated here rather than in a support ticket. It does not ingest a .potx: the deck lands on a clean master with real placeholders, so applying your brand is one Design-tab step in PowerPoint. And it does not build chart objects: figures from your tables reach the slide as your own numbers in editable text. If a chart-heavy deck generated from a prompt is the requirement, Gamma is the better buy for that. If slides written inside a deck you already have open are the requirement, SlidesAI is.

Pricing is flat rather than per seat or per credit: Solo is $30 a month and Team is $89.50 a month as one subscription for the whole team, both billed yearly, with unlimited documents under fair use. Converting the same 60-page report three times in an afternoon costs nothing extra, and adding a reviewer does not change the bill.

If you have already picked one of the two, the practical pages are the SlidesAI alternative that reads a whole PDF or Word file, the Gamma alternative for document-led decks, Gamma pricing and credits for the meter arithmetic, why Gamma PowerPoint exports break for the export symptoms, and Google Slides AI from your documents if the deck has to end up in Workspace.