# Oshu

> Oshu is a GDPR-native AI chatbot platform for websites: embeddable chat widgets grounded in your own documents, hosted entirely on European infrastructure (Hetzner, Germany) with AI inference by Mistral (Paris). Visitor conversations are never used for model training and no data leaves the EU. Built and operated by BeyondSimulations GmbH, Germany.

Key facts:

- Hosting: Hetzner (Germany). Inference: Mistral (France). No US cloud anywhere in the stack; every sub-processor is European and publicly listed.
- Grounding: agents answer from your PDFs and Markdown sources with citations, and say so when the library has nothing relevant instead of guessing.
- Embedding: script embed on any website, a shareable hosted page, LMS/Moodle iframes, and a workspace view for returning users. Visitors never need an account.
- Pricing (EUR per month, flat): Free 0, Hobby 9, Solo 29, Studio 59, Scale 199, BYOK 79 (bring your own Mistral key, unlimited messages), Custom from 299. Verified educational institutions get a 20% discount.

## Documentation

- [Getting started](https://oshu.eu/docs/getting-started): From an empty workspace to a live, embedded chatbot in a few minutes.
- [Agents](https://oshu.eu/docs/agents): System prompts, answer quality, reasoning, citations, and moderation.
- [Reasoning and quality](https://oshu.eu/docs/reasoning-quality): Base vs Premium tiers, extended thinking, and the conversation analysis that grades chats.
- [Libraries and sources](https://oshu.eu/docs/libraries): Ground answers in your own PDFs and GitHub Markdown, with citations.
- [Conversation analysis](https://oshu.eu/docs/conversation-analysis): Spot unhelpful answers and knowledge gaps in the Quality section, then extend your library.
- [Moderation and safety](https://oshu.eu/docs/moderation-safety): The always-on safety shield, opt-in categories, and localized refusal notices.
- [Theming and embedding](https://oshu.eu/docs/theming-embedding): Style the widget and install it on your site or as a shareable page.
- [Plans and billing](https://oshu.eu/docs/billing-plans): Bots, messages, and page limits — and how upgrades and downgrades work.
- [Privacy and GDPR](https://oshu.eu/docs/privacy-gdpr): What the widget stores, EU hosting and sub-processors, retention, and your data rights.
- [Account and data](https://oshu.eu/docs/account-data): Workspace settings, account closure, chat-log deletion, and exporting your data.
- [FAQ](https://oshu.eu/docs/faq): Quick answers to the questions we hear most often.

## Trust and privacy

- [Security](https://oshu.eu/security): architecture, encryption, and how data flows stay inside the EU.
- [Widget privacy](https://oshu.eu/widget-privacy): what the embedded chat widget stores and sends, from the website visitor's perspective.
- [Sub-processors](https://oshu.eu/legal/subprocessors): every sub-processor with location and data-processing-agreement status.
- [Privacy policy](https://oshu.eu/legal/privacy): full Datenschutzerklärung / privacy policy.
- [Terms (B2B)](https://oshu.eu/legal/terms): terms and conditions for business customers.

## Company

- [About](https://oshu.eu/about): why Oshu exists — built originally as a course tutor at the University of Hamburg.
- [Impressum](https://oshu.eu/legal/impressum): legal provider identification (BeyondSimulations GmbH).
- [Blog](https://oshu.eu/blog)
- [Teaching an AI tutor to withhold the answer](https://oshu.eu/blog/teaching-an-ai-tutor-to-withhold-the-answer): General AI assistants are built to solve the problem for you. For learning, that is exactly the wrong behavior. Here is how to prompt a course chatbot that guides students to their own solutions instead, with the full system prompt I use at the University of Hamburg.
- [Oshu is live: a GDPR-native AI chatbot that never leaves the EU](https://oshu.eu/blog/oshu-launch-gdpr-native-ai-chatbot): Oshu is an embeddable AI chat widget hosted in Germany on Hetzner, with inference on Mistral in Paris. No US cloud, no training on your data, every token auditable.