Stuttgart-based modular AI platform Blockbrain has raised €17.5 million in Series A funding to accelerate the development and expansion of its responsible AI agents designed to prevent company knowledge loss and strengthen enterprise productivity. The round was led by Alstin Capital and 13books Capital, with participation from HARTING Family Foundation. Existing investors Giesecke+Devrient Ventures, Landesbank Baden-Württemberg Ventures, and Mätch VC also increased their commitments.
The company’s platform enables enterprises to create digital “knowledge twins” that capture expertise, decision-making logic, and processes from experienced employees, transforming tacit knowledge into scalable AI-driven assets. These Knowledge Bots are designed to make institutional know-how permanently accessible across teams and locations while minimizing hallucinations and misinformation through a security-first architecture.
Blockbrain reports strong commercial momentum, recording fivefold revenue growth in 2025. The platform has been adopted by leading companies in knowledge-intensive and regulated industries, including Roland Berger, Bosch, Bosch Rexroth, Kärcher, fischer, HARTING, Eberspächer, Bardehle Pagenberg, CHG-MERIDIAN, Domcura, and Seifert Logistics Group.
The platform is GDPR-compliant, ISO 27001-certified, and built to meet the requirements of the EU AI Act. Its multi-model architecture avoids vendor lock-in and allows enterprises to maintain control over their AI models and sensitive data. An independent benchmark conducted by security specialist Giesecke+Devrient awarded Blockbrain 92 out of 105 points, significantly ahead of competing enterprise AI solutions tested.
With the new funding, Blockbrain plans to deepen its investment in security, governance, and compliance while accelerating product development. The company is building specialized AI agents and research workflows, including fallback mechanisms designed to improve response reliability and availability. It is also expanding across the European Union and the UK, hiring Forward-Deployed AI Engineers to support enterprise deployments both remotely and on-site.
Founded in 2022 by Antonius Gress, Mattias Protzmann, and Nam Hai Ngo, Blockbrain aims to address structural inefficiencies and skilled labor shortages by enabling companies to systematically digitize and automate internal expertise. Total funding to date now stands at €23 million.
KEY QUOTES
“Companies lose valuable know-how every single day – not out of negligence, but because knowledge and complex decision-making logic have rarely been captured in a systematic way. With Blockbrain, we make tacit expertise permanently accessible and create a robust foundation for productivity and competitiveness. The successful Series A funding round gives us the momentum to scale this approach across Europe.”
Antonius Gress, Co-Founder & CEO of Blockbrain
“Quality and reliability at Blockbrain do not simply arise from choosing a particular AI agent. From day one, we have focused on security, data sovereignty, and compliance. This strategy gives our customers control through full transparency. In a corporate context, simply relying on promises and the power of a model is, in our view, not enough.”
Mattias Protzmann, Co-Founder & CTO & Chairman of Blockbrain
“In industry, expert knowledge determines quality and speed. If it is lost, costly productivity losses threaten. Blockbrain makes internal know-how from documents and team expertise quickly usable as Knowledge Bots, without complex programming and in compliance with GDPR. The team, practical benefits, and feedback from leading industrial companies convinced us. That’s why we are delighted to lead this round as lead investor.”
Benjamin Kleinschnitz, Senior Investment Manager at Alstin Capital
“We invested in Blockbrain because they combine advanced AI technology with the highest standards of security, compliance, and reliability. Their platform delivers real value to companies, potentially serving as a catalyst for Europe to gain more power and resilience in an era of uncertainty. At 13books Capital, we believe Blockbrain is shaping the future of responsible AI in all critical and regulated sectors, from financial services to manufacturing and energy.”
Meera Bissoondeeal, Principal at 13books Capital
