AI assistants answer questions, draft and summarise text, read files and run small tasks from a chat window. European options either train their own models, like Mistral, or run chosen models on servers in Europe, so prompts and company files stay under EU or Swiss law. The strongest European options are Mistral AI (France) for teams that want a European model maker, not a reseller, Langdock (Germany) for companies rolling AI chat out to every employee and Proton (Switzerland) for people and teams who want one privacy-focused Swiss account.
Best first. Headcount and founding year come from LeadWave's database; prices, hosting and G2 ratings from each company's own pages and G2, checked in November 2026.
| Alternative | Headquarters | Founded | Employees | G2 rating | Free plan | Paid plans from | Your data | Open source |
|---|---|---|---|---|---|---|---|---|
1 Mistral AI | Paris, France | 2023 | 1,200 | — | Yes | €14.99/month | In Europe | No |
2 Langdock | Berlin, Germany | 2023 | 30 | 5.0 (8 reviews) | No | €23.20/user/month | In Europe | No |
3 Proton | Geneva, Switzerland | 2014 | 635 | — | Yes | $2.99/month | In Europe | Yes |
4 Dust | Paris, France | 2023 | 118 | 4.6 (80 reviews) | No | €24/user/month | EU region available | No |
5 Infomaniak | Geneva, Switzerland | — | — | — | Yes | CHF 19/year | In Europe | No |
6 Omnifact | Frankfurt, Germany | — | — | — | No | €25/user/month | In Europe | No |
7 meinGPT | Unterhaching, Germany | — | — | — | No | €18/user/month | In Europe | No |
8 Mammouth AI | Paris, France | 2024 | — | — | No | €12/month | In Europe | No |
9 nele.ai | Hungen, Germany | — | — | — | No | — | In Europe | No |
10 DeepL | Cologne, Germany | — | — | 4.6 (171 reviews) | Yes | €7.49/month | — | No |
Each page ranks the European options for that tool's users and says how each one compares.
AI assistant Vibe (formerly Le Chat) on its own models
French AI lab that trains its own language models and sells Vibe, the chat and agent app renamed from Le Chat in May 2026, plus an API for developers.
Company-wide AI chat with many models, hosted in the EU
Berlin platform that gives a whole company one chat app over several AI models, with custom agents, workflows, meeting notes and admin controls. Runs on Microsoft Azure servers in the EU.
Encrypted email, passwords, storage and AI from Switzerland
Swiss company behind Proton Mail, Proton Pass and the Lumo AI assistant. Proton Pass is an open-source password manager with end-to-end encryption, email aliases and a built-in 2FA code generator.
AI agents connected to a company's own tools and data
Paris platform for building AI agents that search and act on company data in Slack, Notion, Google Drive and other tools, using models from OpenAI, Anthropic, Google and Mistral.
Swiss cloud company with the Euria AI assistant
Independent Swiss cloud and hosting company. Its Euria assistant runs open-source models in Infomaniak's own data centres in Switzerland and is built into the kSuite mail and drive apps.
Private AI chat and assistants for regulated teams
Frankfurt platform for team AI chat and assistants on internal documents. Hosted in Germany or on-premises, with a privacy filter and admin rules on which models and regions staff may use.
Company AI chat hosted in Germany
German platform from SelectCode that gives staff chat with several AI models, shared assistants, meeting notes and admin controls, hosted in Hetzner data centres in Germany.
One subscription for many AI models
French chat app that bundles models from OpenAI, Anthropic, Google, Mistral and others, plus image generation, for one monthly fee. Account data is stored in the EEA; prompts go to each model's provider.
Company AI chat billed by usage, not per seat
German AI chat platform from GAL Digital for whole organisations. Firms buy a monthly credit volume shared by all staff; chats are stored on German servers and admins pick EU or international model hosting.
AI translation and writing correction
Cologne company known for machine translation, with DeepL Write for editing text and DeepL Voice for live speech translation. It is not a general chat assistant.
A company counts as European if it's headquartered in Europe: the EU, the EEA, Switzerland, the UK, or elsewhere in geographic Europe, never Russia or Belarus. Headquarters means where it's run from, not a registered office. Companies founded in Europe but headquartered elsewhere today are listed separately, and a non-European owner is always named.
Each company was checked against its own legal notice, pricing page and data-processing terms, and its G2 page. The order weighs how fully each one replaces the US leaders, its track record and its ratings. No company paid to be listed or ranked.
Mistral AI (France) for teams that want a European model maker, not a reseller, Langdock (Germany) for companies rolling AI chat out to every employee and Proton (Switzerland) for people and teams who want one privacy-focused Swiss account. Each is headquartered in Europe; the table compares their hosting, prices and G2 ratings.
Mistral AI, Proton, Infomaniak and DeepL have a free plan with no time limit.
Mistral AI, Langdock, Proton, Infomaniak, Omnifact, meinGPT, Mammouth AI and nele.ai store customer data in Europe by default. Being European doesn't make a tool GDPR compliant on its own: check its data processing agreement too.
Yes: Proton, which you can also host on your own servers.
Yes. Mistral AI in Paris trains its own models and sells the Vibe assistant, called Le Chat until May 2026. Its data is hosted in the EU by default.
Some do. Langdock, Dust and Mammouth let users pick models from OpenAI, Anthropic or Google next to European ones. Mistral, Infomaniak's Euria and Proton's Lumo run their own or open models on their own servers.
Mistral's Vibe, Proton's Lumo and Infomaniak's Euria all have a free tier with usage limits. Business tools such as Langdock, Omnifact and meinGPT offer trials instead.
