AI Presentation Maker Limits: Gamma vs Copilot in PowerPoint vs Gemini in Slides

Google publishes a hard number for its slide generator and its two rivals do not. A Business Standard user of Gemini in Google Slides can generate 100 slides a month, and the counter resets on the 1st. If you are choosing an AI presentation maker for a team, that one published limit is the most useful fact in this market. Microsoft says Copilot in PowerPoint is included with the licence and publishes no ceiling. Gamma publishes credits and does not say what a slide costs.

The short answer for a team lead is this. Gemini in Slides suits teams already on Google Workspace Business Standard or above who make fewer than 10 ten-slide decks per person a month. Copilot in PowerPoint suits Microsoft shops with strict brand templates and a Copilot budget already approved. Gamma suits teams that publish decks as web pages and accept credit metering in exchange for stronger visual defaults.

Which plan each AI presentation maker requires

The first question is not which tool writes the best deck. It is which plan you must be on before the button appears at all. Two of them hide the deck generator behind a licence your team may not hold.

Gemini in Slides: Business Standard and up

Google began an extended rollout of full multi-slide generation in Slides on 29 June 2026, according to the Workspace Updates announcement. Eligible plans are Business Standard and Plus, Enterprise Standard and Plus, and the consumer Google AI Pro and Ultra subscriptions. Business Starter is excluded, and Google's limits table lists it as "No access" for this feature.

Two launch details matter for a rollout. Google states there is no admin control for this feature, so you cannot pilot it with one team and hide it from another. It also shipped in US English only, and the help article says it runs on desktop only.

Copilot in PowerPoint: a paid Copilot licence

Microsoft gives every eligible business user Copilot Chat at no extra cost. Its pricing page footnote says availability in Word, Excel and PowerPoint "may vary by market and customer licensing". That is a polite way of saying the deck generator sits behind the paid licence. The May 2026 Message Center notices that added "create a presentation with Copilot" to PowerPoint Home describe the rollout as limited to users who hold a Copilot licence.

The paid options stack on a Microsoft 365 plan you already pay for. Copilot Business is $18 a user a month on annual billing during the current promotion, against a $21 list price and $25.20 on monthly billing. Microsoft also sells Business Standard with Copilot at $23.50 and Business Premium with Copilot at $32, both annual. The enterprise licence is $30.

One licensing oddity is worth a check with your admin. Microsoft's own PowerPoint FAQ says creating a presentation about a topic, or from a file, only works if the user also has a Designer licence. We would not assume every Copilot seat in your tenant clears that bar.

Gamma: works on the free plan, rationed by credits

Gamma is the only tool of the three you can try without buying anything. Its Free plan gives 400 credits at signup that do not refresh, and caps generation at 10 slides per prompt. Paid plans lift that to 100 slides per prompt and add a monthly credit allowance: 1,000 on Plus, 4,000 on Pro and 20,000 on Ultra.

Business is the team plan. Gamma's help centre lists it at $40 per member per month billed annually, with 10,000 credits per member and custom themes shared across the workspace. Annual plans carry the same credits as monthly plans at a 28% discount, and unused plan credits roll over up to double the plan size.

Generation limits: a quota, a credit meter and no published number

Each vendor rations deck generation in a different unit, and the unit decides how you budget. A per-user slide quota is easy to plan around. A shared credit pool is easy to overspend. An unpublished limit is easy to sell and hard to forecast. The wider pattern behind that choice is covered in the analysis of how AI vendors tighten usage limits without changing the price.

Gemini: 100 slides, per user, resetting monthly

Google's usage-limits page is the most specific document in this comparison. Business Standard and Plus users can generate 100 slides a month, Enterprise Standard and Plus users 500. Limits apply to each user, are not shared, and reset at midnight Pacific time on the first day of the month.

The quota counts slides, not decks. At 10 slides a deck, a Business Standard user gets about 10 generated decks a month, and an Enterprise user about 50. Google's launch post had promised promotional higher limits "through at least August 1, 2026". Anyone who tested the feature in July saw a more generous ceiling than the one in force now.

Image generation runs on a separate meter. The same page says slide generation does not count toward image limits, and lists 30 Nano Banana Pro images a month in Slides and Vids for Business Standard and Plus. A deck heavy on generated images can hit that second ceiling first.

Gamma: credits per slide and per image, rate unpublished

Gamma's credit documentation says cost varies with the action, the model used and the length of the generation. Generation is metered per slide and per image. It does not publish a number of credits per slide. Failed or clarifying actions are not charged.

The money side is published, which allows one calculation. Top-up credits cost $6 for 1,500, or $0.004 a credit. Business costs $40 for 10,000 credits, which is also $0.004 a credit. On Business, then, the per-seat price buys exactly its credit value at the top-up rate. The shared themes and admin features come on top.

Copilot: included with the licence, ceiling unstated

Microsoft's business pricing page says everyday AI experiences, "like chat and Copilot in your Microsoft 365 apps", are included with the licence. Usage-based billing applies to advanced features. We found no published monthly number of slides or presentations. The PowerPoint FAQ says only that Copilot "is currently limited in the number of words it can process per prompt", without giving the number.

For the heavy user that is good news. For the budget owner it is a forecasting gap, because an unpublished limit can be changed without a price change. The post on how credits, tokens and seats confuse AI billing shows how often that happens.

Brand template support in Copilot, Gemini and Gamma

For most teams the brand template is the real test of a slides AI tool. A deck that ignores the master slide takes longer to fix than to build by hand. All three now accept a brand input, and the inputs are not equivalent.

Copilot has the most formal mechanism. Microsoft's brand-kit article, last updated July 2026, says both .pptx and .potx files work as templates, uploaded directly or picked from an Organization Asset Library. Templates must be built in desktop PowerPoint, not the web app. Microsoft recommends sample slides covering title, agenda, section header, content, data visualisation, timeline, process, quote, Q&A, summary and next-steps layouts. Copilot falls back to slide masters only when sample slides are missing.

That detail tells you where the work sits. A brand kit with good sample slides produces on-brand output. A bare master with placeholder layouts produces generic slides in your colours. Microsoft's FAQ also limits organisation branding to users licensed for Copilot, so the free Copilot Chat tier does not get it.

Gemini takes a lighter route. Google's help article describes a "Match presentation style" option that points Gemini at an existing deck in Drive. The July 2026 Workspace blog says Gemini can "automatically match your brand's style" from that deck. There is no separate brand-kit object and no admin-managed template library in the documentation we read. Your brand standard is whichever deck the user picks that day.

Gamma sits between the two. Custom themes cover colours, fonts and logos, and on Business they are shared automatically with every member. Gamma can import a .pptx or Google Slides file, though not Figma or Canva. Custom fonts are listed on Ultra, and headers and footers carrying the theme logo start at Pro. The plan you buy decides how far the brand reaches.

Our position: if your brand team polices decks, Copilot is the only one of the three whose brand control is an admin-managed object rather than a user habit. That is worth more than any difference in output quality.

Export and file formats: where each deck ends up

Copilot and Gemini generate inside the editor your team already uses. A Copilot deck is a PowerPoint file and a Gemini deck is a Google Slides file, editable slide by slide with native layouts and charts. There is no export step and no conversion to check.

Gamma is different by design. Its decks are web documents first, and the export help page lists PDF, PNG and PowerPoint. Google Slides is reached by exporting to PowerPoint and uploading the file, and Word export is not supported on any plan. Free-plan exports to PDF and PPTX carry a "Made by Gamma" badge, while Plus, Pro and Ultra export without it.

Any conversion from a web-native layout to PowerPoint is a translation, and translations lose things. Gamma does not publish a fidelity guarantee, and we did not run a conversion test for this post. If your decks end life as an attachment that a client edits, budget time to check the exported file before it ships.

Gamma also offers an API on Pro and Ultra, with API calls drawing on credits. For a team that wants to generate decks from a CRM or a reporting job, that matters. Neither Copilot in PowerPoint nor Gemini in Slides documents that capability for deck generation.

Cost per deck, calculated where the vendor allows it

A fair cost per deck needs two published numbers: what you pay, and how much generation that buys. Only Google publishes both, and only for the Gemini increment. The other two let you calculate a cost per deck at a volume you assume, which is less satisfying and more honest.

The Gemini calculation, with the working

When Google folded Gemini into Workspace in January 2025, it said Business Standard with Gemini cost $14 a user a month. That was $2 more than the plan without it. Treat that $2 as the price of the AI. Divide it across the 100-slide monthly quota and each generated slide costs $0.02, so a 10-slide deck costs $0.20 at full use.

That number flatters Google. The $2 also buys Gemini in Gmail, Docs, Sheets and Meet, so charging all of it to slides overstates the slide cost. The quota is also a ceiling, and a user who builds 2 decks a month pays $1 per deck. Even so, no other vendor in this comparison lets you reach a per-slide figure from its own documents.

Copilot and Gamma: cost per deck by volume

With no published cap, Copilot's cost per deck is simply the seat price divided by how many decks the user makes. At the $18 promotional Copilot Business price, that is $9 a deck at 2 decks a month and $1.80 at 10. At the $21 list price it is $10.50 and $2.10. The seat also buys Copilot in Word, Excel, Outlook and Teams, so this is a ceiling, not a true allocation.

Gamma Business at $40 works out to $20 a deck at 2 a month and $4 at 10, provided 10,000 credits cover the generation. Gamma does not publish credits per slide, so we cannot confirm they do. Unlike the other two seats, a Gamma seat buys nothing except presentations, documents and web pages, so the full price belongs on the deck.

Working: monthly price divided by decks per month. Volumes are assumptions, not measurements. Gemini's 100-slide cap allows about 10 ten-slide decks on Business Standard, so the 10-deck column is its ceiling. Copilot and Gemini figures also require a Microsoft 365 or Workspace base plan that is not included here, while Gamma needs no base plan.

The AI presentation tool matrix, in one table

This is the documented feature and price matrix, built only from vendor pages. Where a vendor does not publish a figure, the cell says so rather than borrowing one from a review site.

If your team lives in one suite, the native tool wins on output format alone, because nobody has to convert anything. Gamma earns its seat when the deck is the product itself, shared as a link, embedded, or generated by API.

The suite question is the bigger one, and it is covered in the comparison of what a Copilot seat and a Gemini seat each buy.

Where this comparison is weakest

This is a documentation comparison, not a quality test, and that is its largest limitation. A tool can win every row of the matrix and still produce slides your team rewrites. We generated no decks for this post, so nothing here says which tool writes the better slide.

We could not verify Gamma's individual plan prices

Gamma's public pricing page refused automated retrieval during our research. Third-party trackers disagree on the Plus and Pro prices by several dollars. We therefore quote only the Business price and the credit figures that appear in Gamma's own help centre. Check the live pricing page before you buy, and treat any review quoting a single Plus price with suspicion.

The Gemini per-slide figure is generous to Google

The $0.02 per slide rests on a $2 increment Google stated in January 2025. Workspace prices have moved since, including introductory offers on Business Standard, and the $2 also pays for Gemini in every other app. A competing reading is that Gemini in Slides has no separable price at all, and that any per-slide number is a fiction. We think the calculation is still useful because it bounds the cost, but the bound is loose.

Copilot's missing cap cuts the other way. Microsoft may well allow far more generation than Google, and a heavy user could get a lower true cost per deck from Copilot than our table suggests. The absence of a number is a forecasting problem for the buyer, not proof that the limit is low.

Frequently asked questions

How to choose one this week

Start with an audit, not a trial. Pull one month of your team's actual deck count, by person, from shared drives or your file system. If most people make fewer than 10 decks a month and you are on Google Workspace Business Standard, Gemini's quota already covers them and the decision costs nothing.

Then test the brand template, because that is where these tools actually differ. Give each candidate the same source document and your real master file, and time how long it takes to make the output client-ready. The tool with the shortest clean-up time wins, whatever the seat price. If you are standardising across a team, the method in the guide to deciding when to standardise on one AI tool applies directly.

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