The big models, from a French platform.
The big models, one subscription
Claude, GPT, Gemini, Mistral, DeepSeek, Llama and more than 100 models in the same interface. Auto mode picks a model suited to each request.
Moon Blur before every send
Moon Blur replaces the sensitive data it detects with placeholders: IBANs, social security numbers, payment cards, emails, phone numbers, more than 150 types in all. The real values come back in the answer you read.
Hosted in France
The app runs in Strasbourg and storage is in Roubaix, at OVHcloud. Daily database backups go to a second server, in France.
A French company
Stellarr Studio SAS, registered with the Bernay Trade and Companies Register (SIREN 101 691 103), publishes Moon AI and keeps building it from Pont-Audemer. Its terms, privacy policy and data processing agreement (DPA) are published in French.
For French organizations
The organization offer, on quote, adds single sign-on, a SCIM directory and rules by group. Invoices are paid by bank transfer or go through Chorus Pro, with a purchase order and a commitment number.
In your language, on all your devices
The interface, documentation and help are available in French and English. The same account works in your browser, on iPhone, on Android and in the terminal with Moon CLI.
What is French.
- The company: Stellarr Studio, a French simplified joint-stock company (SAS) led by Fabien Marie, based in Pont-Audemer, in the Eure department of Normandy.
- The hosting: the app and storage at OVHcloud, on servers located in France.
- Moon Blur: the layer that masks the sensitive data it detects before sending, designed and maintained by the studio.
- The interface, the documentation, the help and the legal texts: written in French.
What is not.
- The big models. Moon AI does not build them: the platform gives you access to them. They come from their makers, mostly American: Claude from Anthropic, GPT from OpenAI, Gemini from Google. Mistral comes from Mistral AI, a French company.
- The processing of your messages. They go to the provider of the model you pick, after Moon Blur. Detection can miss a value written in an unusual way, and names of people are not detected on their own: from Constellation, add them to your list of terms to mask.
- The makers’ own apps. Moon AI gives you the models, not ChatGPT Plus, Claude Pro or Google AI Pro: their specific features are not included.
Where the models come from.
Headquarters country of each model maker. The catalog has more than 100 models (107 on November 5, 2026); this table shows the main families.
| Model | Company based in | Maker’s country |
|---|---|---|
 GPT | OpenAI | United States |
 Claude | Anthropic | United States |
 Gemini | United States | |
 DeepSeek | DeepSeek | China |
 Mistral | Mistral AI | France |
 Llama | Meta | United States |
 Grok | xAI | United States |
 Qwen | Alibaba | China |
 Command R+ | Cohere | Canada |
| Gemma | United States | |
 Kimi | Moonshot AI | China |
 MiniMax | MiniMax | China |
An AI platform from Normandy.
Moon AI was born in Pont-Audemer, in Normandy’s Eure department: that is where Fabien Marie, self-taught, founded Stellarr Studio, the company that publishes it and keeps building it.
The company is supported by the CCI Seine Estuaire and the Normandy Region.
In 2025, the town of Pont-Audemer honored its founder at “La Jeunesse a du talent”, a local award for young talent.
They wrote about it.
- Actu.fr, July 11, 2026 (in French)
- France 3 Normandie, May 16, 2026 (in French)
- BFM Normandie, April 20, 2026 (in French)
- Paris-Normandie, April 2, 2026 (in French)
- Ouest-France, October 28, 2025 (in French)
- Le Parisien, July 30, 2025 (in French)
What it costs.
The Free plan needs no credit card: it gives you economy and standard models, with a reduced usage limit. Paid plans start at €9.90 per person per month, VAT included, with no commitment, and open the whole catalog.
Prices per seat for the plans on sale, VAT included, checked on November 13, 2026. They may change: the pricing page prevails.
Frequently asked questions.
Is Moon AI a French AI?
The platform, yes: Moon AI is designed and published by Stellarr Studio, a French company based in Pont-Audemer (Eure, Normandy), and hosted in France at OVHcloud. The big models, no: Moon AI gives you access to them, and they come from their makers, mostly American (Claude from Anthropic, GPT from OpenAI, Gemini from Google). Mistral, from the French company Mistral AI, is in the catalog.
About Moon AIWhere is my data?
The app and the storage of your conversations and files are hosted in France at OVHcloud, in Strasbourg and Roubaix. When you send a message, it goes to the provider of the model you pick, after Moon Blur masks the sensitive data it detects. Detection may be incomplete; images and voice are sent as they are.
Hosting and its limitsWhich models?
More than 100 models (107 in the catalog on November 5, 2026), including Claude, GPT, Gemini, Mistral, DeepSeek, Llama and Qwen. The Free plan offers economy and standard models; paid plans, from €9.90 a month VAT included, open the whole catalog.
Explore the modelsAI in France, in five guides.
Sourced and dated: the Normandy ecosystem, the French options, alternatives to ChatGPT, what “hosted in France” really means, and Moon AI’s exact name.
AI in Normandy: who builds artificial intelligence there
Labs, networks, public funding and companies: who works on AI in Normandy, and a concrete example in Pont-Audemer.
French AI: the options, and what is really French
Mistral, Moon AI, Mammouth, the French government’s assistant: what is French in each option, from the publisher to the model.
A French alternative to ChatGPT: an honest comparison
Vibe by Mistral, Moon AI or Mammouth instead of ChatGPT: publisher, models, hosting, price and limits.
Sovereign AI or AI hosted in France: what it means
Hosting, applicable law, the Cloud Act, SecNumCloud: what these words really guarantee, and the questions to ask.
Moon IA or Moon AI: how to find the right service
The exact name, the official addresses, the apps and the similarly named services not to confuse it with.
Further reading.
Try Moon AI on a real task.
The Free plan needs no credit card. Start with a task that holds no sensitive data, then look at what Moon Blur masks below your message.