I simply registered for the free tier with a temporary e-mail address and it works very well for me in English and German. Without registering you can try out few requests.

Le Chat: https://chat.mistral.ai/chat

From Mistral AI's About-page:

We are Mistral AI, a pioneering French artificial intelligence startup founded in April 2023 by three visionary researchers: Arthur Mensch, Guillaume Lample, and Timothée Lacroix.

From Wikipedia:

On February 6, 2025, Mistral AI released its AI assistant, Le Chat, on iOS and Android, making its language models accessible on mobile devices.

Le Chat offers features including web search, image generation, and real-time updates.

Mistral AI also introduced a Pro subscription tier, priced at $14.99 per month, which provides access to more advanced models, unlimited messaging, and web browsing.

From Legal, Security and Data privacy subpage:

When using Mistral AI’s API, where is my data stored?
Mistral AI’s servers are located in Europe (Sweden).

• More Privacy information: https://help.mistral.ai/en/collections/280418-legal-security-and-data-privacy
• Helpcenter: https://help.mistral.ai/en/
• Products: https://mistral.ai/products/le-chat