Noxtua

About Noxtua

Noxtua, formerly Xayn, is a Berlin-based legal AI company building what it describes as Europe's first sovereign legal AI. Spun out of research from Oxford University and Imperial College London, the company rebranded from Xayn AG to Noxtua SE alongside its April 2025 Series B. Unlike most legal AI vendors that wrap US foundation models, Noxtua runs its own proprietary Noxtua Legal Large Language Model, trained exclusively on high-quality European legal data labelled by legal experts in partnership with German business law firm CMS. The €80.7M Series B was led by Germany's leading legal publisher C.H.Beck, with HPC specialist Northern Data, CMS and global law firm Dentons also participating. The Legal AI Alliance behind Noxtua now spans publishers, computing partners and major law firms across Germany, Austria and beyond, giving the platform deep, jurisdiction-specific legal content (100M+ searchable documents and 7.5M+ court decisions). Noxtua's sovereignty positioning is unusually strong. Processing occurs exclusively on European infrastructure via the Open Telekom Cloud (Deutsche Telekom) and IONOS, with no connection to US cloud providers. Customer data is explicitly never used to train, retrain or improve AI models, and the self-trained model can run either on a sovereign European cloud or locally on-premise. The platform is designed to meet German professional-secrecy obligations (§ 43e BRAO, § 203 StGB), allowing use by confidentiality-bound professionals without anonymisation. Noxtua carries an extensive certification stack: it is the first German company certified to ISO 42001 (AI management), alongside ISO 27001, 27017, 27018 and 9001, plus BSI C5 and TISAX, and is GDPR-compliant. It targets in-house legal teams, law firms, auditors and tax advisers, and public authorities and courts. Exact pricing is not published and is handled via enterprise sales.