Stuttgart-based AI-driven knowledge management startup, Blockbrain has secured €17,5 million (£15,2mn) in a Series A funding round.
The round is led by Munich-based VC firm Alstin Capital and London-based FinTech-specialized VC firm 13books Capital, with participation from the HARTING Family Foundation. Existing investors Giesecke+Devrient Ventures, Landesbank Baden-Württemberg Ventures, and Mätch VC have also increased their financial commitment.
When experienced employees leave a company, more is lost than just a position: expertise, decision-making logic, and established processes disappear and must be painstakingly rebuilt. The Stuttgart-based tech scale-up Blockbrain offers a platform solution that, for the first time, enables companies to make this critical knowledge permanently available, augmentable, and automatable with trustworthy AI agents.
With Blockbrain’s platform solution, digital knowledge twins can be created within just a few weeks. They store information from experts and specialists, map ways of thinking, decision-making logic, and methodological knowledge, and make it scalable as needed. These so-called Knowledge Bots then make the stored experiential knowledge permanently available across teams and locations. Existing customers such as Axel Frey, CEO of Seifert Logistics Group, report weekly time savings of up to 15 percent through the use of their digital twin. Hallucinations and misinformation are also virtually eliminated due to the technical architecture behind the agents.
The strong market response proves this approach works: in 2025, Blockbrain recorded a fivefold increase in revenue. This is the result of successful collaborations with leading companies from knowledge-intensive and regulated industries, such as Roland Berger, Bosch & Bosch Rexroth, Kärcher, fischer, Harting, Eberspächer, Bardehle Pagenberg, CHG Meridian, Domcura, and Seifert Logistics.
Trustworthy AI Solutions:
Many current AI systems offer insufficient transparency, insecure data pathways, and a lack of control over sensitive knowledge. Blockbrain’s platform stands in contrast, meeting the highest standards for security, governance, and compliance. It is GDPR-compliant, ISO 27001-certified, and already fully EU AI Act-ready. Thanks to a multi-model architecture with no vendor lock-in, companies retain full control over the models and sensitive data they use. The quality and security of the platform are confirmed by an independent benchmark from security specialist Giesecke+Devrient. Blockbrain scored 92 out of 105 possible points, positioning itself well ahead of other established enterprise AI solutions. The runner-up among the six providers tested achieved only 58 out of 105 points, further underscoring Blockbrain’s lead in direct comparison.
With the fresh capital, Blockbrain is investing specifically in further expanding the security, compliance, and governance of its platform. At the same time, the company is advancing the development of specialized knowledge and AI agents – including features such as a fallback mechanism for AI models to increase the availability and reliability of answers, as well as new agent and research workflows to automate knowledge building and research processes.
The company is expanding its presence in Europe and the UK and strengthening its team with so-called Forward-Deployed AI Engineers – specialized experts who closely support companies in the introduction and use of AI agents and their integration into existing systems, either remotely or on-site. Targeted investments are also being made in further developing the platform and researching new application areas around AI-supported knowledge management. Blockbrain is thus positioning itself as a central point of contact for companies that want to use artificial intelligence not as an experiment, but as a reliable tool in their core business.
Founders Thoughts:
Antonius Gress, Co-Founder & CEO of Blockbrain, says: “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.”
Mattias Protzmann, Co-founder & CTO of Blockbrain, commented: “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.”
Investors Thoughts:
Benjamin Kleinschnitz, Senior Investment Manager at Alstin Capital, said: “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.”
Meera Bissoondeeal, Principal at 13books Capital, said: “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.”
