Donnerstag.ai

Based in Germany, Donnerstag. ai Technologies specializes in automating financial reconciliation processes through advanced AI-driven solutions, ensuring accuracy and control over billing and payment data across various sectors. Donnerstag. ai, founded in 2025, operates from Frankfurt am Main, Germany, focusing on automating the reconciliation of performance, billing, and payment data.

The company has successfully closed one deal, raising EUR 4. 3 million in a SEED funding round on November 20, 2025, led by Speedinvest, with participation from Crestone Venture Capital and QED Investors. The founder’s past ventures are not documented, and there are no mentions of pivots or subsidiaries. Donnerstag.

ai specializes in automating the reconciliation of performance, billing, and payment data through its core product offerings. This integrated system leverages artificial intelligence to provide real-time error detection and discrepancy recognition, ensuring users maintain control over their cash flow and financial processes. By aggregating Order-to-Cash data, the platform delivers insights into billing performance, payment statuses, and outstanding credits, streamlining operations across various sectors such as logistics, retail, and professional services. The system is compatible with over 1,000 different billing formats, catering to a diverse client base that includes suppliers and service providers across Europe and North America, enabling them to enhance liquidity management and operational efficiency.

The revenue model for Donnerstag. ai revolves around its subscription-based service, which is designed for businesses requiring automated reconciliation solutions. Clients typically engage in a partnership structure, where businesses pay for access to the platform based on the volume of transactions or integrations they require. The service includes features such as automated matching of invoices and payments, real-time aging reports, and comprehensive dashboards for tracking financial data.

This model is geared towards B2B relationships, with clients ranging from small enterprises to large corporations that require advanced financial oversight, thus enhancing their cash flow management capabilities through the use of Donnerstag. ai's technology. In November 2025, Donnerstag. ai raised EUR 4.

3 million in Seed funding to support its expansion across the DACH region and the development of its artificial intelligence-driven accounts receivable platform. The funding will be utilized for team growth, enhancement of algorithms for discrepancy detection and reconciliation automation, and improvements to the onboarding process for supplier clients. The company aims to broaden its market presence and is actively working on new product designs and launches to ensure continued service enhancements.