Ember publishes Creation and wrote this comparison, so read it with that in mind. It answers one specific question: a founder preparing to enter a new market, in another country or with another customer base, who has to present the project there. The other Gamma and Creation comparisons on the site cover market validation, the first pitch or live selling. This one covers what changes when the audience no longer reads your working language.
What a new market changes for your deck
Three things change at once. First the document language: a local investor or customer reads your presentation in their language, or does not read it. Then the facts: market size, local competitors and customer references from your home country do not carry over unchanged. Finally the format: the file has to circulate at your counterpart, who will most likely open a PDF or a PowerPoint file.
These three points frame the rest. No tool supplies the new market’s facts for you: you have to gather them, and the tool has to lay them out without distorting them.
What Gamma states about languages
Gamma’s official help page on using it in your preferred language states that its AI generator and editor support multiple languages: you write your prompt, or paste your text, in the language you want. The same page lists 14 interface languages: Brazilian Portuguese, English, French, German, Indonesian, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese and Turkish.
That list covers the interface, not the generation languages. The page does not say how many content languages are supported or how well. For a market such as Brazil, Germany or Japan, the only reliable proof is a trial: generate two or three pages in the target language and have someone from the country read them.
To share the result, the export help page says Gamma exports to PDF, PNG and PowerPoint (PPTX), and that Word export is not supported. It also warns that some styling, such as gradient headings or frosted backgrounds, may render differently in a PowerPoint export: check the exported file before sending it.
What Creation allows for languages
In Creation, each document keeps its own language, French or English, independently of the interface language. The composer offers it before the first generation, defaulting to the language of your brief, and it stays visible and editable for later edits. Changing it guides future edits: pages already created are not translated automatically. No other document language is offered today.
Creation starts from the documents and facts you supply. On its dense templates (one-pagers, business model canvases, market maps), it preserves supplied facts and distinguishes estimates from known data. For a new market that helps: your local figures, gathered in your documents, serve as the starting point, to be checked when you review. A deck exports as PDF or PowerPoint (.pptx). You can then rehearse aloud in Speaking practice, which is limited to decks.
The verdict depends on your target market’s language
| Criterion | Gamma | Creation (Ember) |
|---|---|---|
| Generated content language | Several languages stated by the official help, no list or number published | French or English, chosen per document |
| Interface language | 14 languages listed on the official help | Application interface, independent of the document language |
| Translating an existing deck | Not documented on the page read | No: changing the language only guides future edits |
| Content starting point | A prompt or pasted text | Your documents and facts |
| Output formats | PDF, PNG, PowerPoint (PPTX) | PDF and PowerPoint (.pptx) for decks |
| Target market neither French nor English speaking | To be tested in the target language | Not covered |
When to choose Gamma
- Your market speaks a language that is neither French nor English: Creation cannot produce it, and Gamma states it handles several languages.
- You want to check a rendering in the target language quickly before deciding, by pasting text you have already written.
- You accept reading the facts yourself and having a local person review the language.
When to choose Creation
- Your new market is French or English speaking: for example entering the United Kingdom from France, or the reverse.
- Your local figures already exist in documents and you want to start from them rather than from pasted text.
- You want to rehearse the presentation aloud afterwards in Speaking practice, which is limited to decks.
When neither is enough
If you must present in a language neither tool handles well, or if the content needs fine cultural adaptation, a deck translated and then reviewed by a local professional remains the safe route. Neither tool replaces a local reader on a document that carries your credibility.
Limits of this comparison
The Gamma facts come from two official help pages read on September 29, 2026, which publish neither a number of generation languages nor details on translation. The Creation facts describe the product on that date. A comparison does not replace your own trial: generate the same excerpt in both tools, in your market’s language, before choosing.
For other situations, see Gamma vs Creation: Read-Alone Deck or Live Angel Pitch? or Gamma vs Ember Creation for B2B Founder-Led Sales Decks.
Sources
FAQ
Can Creation produce a deck in Spanish or German?
No. Each Creation document is in French or English, and no other language is offered today. For a Spanish or German speaking market, Gamma states it handles several languages but does not publish the list: run a trial in the language you need.
Does Gamma publish the list of generation languages?
The help page read on September 29, 2026 says the generator and editor support multiple languages, with no number or list. It lists 14 interface languages, which is different. Check your language with a trial.
Can I translate an existing Creation deck?
Not automatically. Changing the document language guides future edits, but pages already created are not translated. For a version in the other language, start a new creation and pick the language before the first generation.
Which tool keeps my local figures intact?
Neither tool spares you a review. Creation starts from your documents and, on its dense templates, preserves supplied facts while distinguishing estimates from known data. With Gamma you paste your text or prompt. In both cases, check the figures after generation.
Which formats can I send to a local investor?
Gamma exports to PDF, PNG and PowerPoint, but not Word, and some styles can vary in the PowerPoint file. A Creation deck exports as PDF or PowerPoint (.pptx). In both cases, open the exported file before sending it.
Should someone from the country review the deck?
Yes, whenever the language is not your own. A tool can produce plausible text that sounds wrong to a local reader. That review costs little compared with the stakes of a first impression in a new market.