The Noxtua Model System
Choose the right category for your legal tasks
Pick the model category that fits your task.
Not every legal task makes the same demands. Searching across a large corpus of contracts is a different job from drafting a clause, and a filing for a public authority may come with different requirements than an internal memo. A single setup for everything works - but it means accepting the same conditions for every task, whatever you're working on.
With the Noxtua Model System, you can now choose between categories and base models yourself. Open the model picker in the chat field and select Standard which is powered by Athena Agent, open-source/weights models hosted exclusively on sovereign, European-controlled infrastructure provided by Deutsche Telekom and IONOS - or Frontier powered by Minerva Agent, international frontier AI models (closed-source) in a secure European setup with Deutsche Telekom, under some of the highest security protections currently available. You can switch at any time, including in the middle of a conversation, and you'll find a picker in Chat, Matrix, and the Word and Outlook add-ins.
With Minerva, Noxtua is the first Legal AI to offer frontier model access in a European setting. We work with our European partner Deutsche Telekom, which provides access to international frontier models via T Cloud Public, a specialized cloud built for high-security applications. The model is accessed over an encrypted, isolated connection into a dedicated processing environment in a EU data centre: client data is processed only for as long as the request takes, in strict isolation, and nothing is retained once the request is answered. The entire processing chain is governed by a data processing agreement and complies with the professional-secrecy obligations of the jurisdictions we operate in.
Whichever you choose, all categories are fully featured in the product - picking one never means giving something up. And before a model is admitted to one of our categories, it passes pre-registered release gates, both before launch and before any modification: strict quality thresholds, legal engineering tests by C.H.BECK, and bias assessments.
The base models in the categories Athena Agent and Minerva Agent are combined in the Noxtua AI system with an additional set of specialist models for OCR, search, and voice which are hosted on European infrastructure.
Across every category, client data is never used to train the underlying models and is subject to zero data retention during processing, which means that the models keep nothing once a request is finished. The clients’ conversation history, which enables them to return to their work across sessions and interfaces, is stored by Noxtua in encrypted storage on European infrastructure (Deutsche Telekom and IONOS), under the Noxtua keys, and never on a model provider's systems. Clients can decide for how long this history is kept and when to delete it.
Please note: The Noxtua Model System is not available in every market. If you don't see a model dropdown in the chat field, the multi-model system isn't available in your country. If your organization has an assigned admin, this user can also limit which model categories are available to you.
Learn more about the Noxtua Model System here.