Antidote, a provider of AI-based billing compliance software for global law firms, has raised $5 million in a seed funding round led by Lakestar, with participation from Concept Ventures, The LegalTech Fund, and industry angel investors. The round follows a $2 million pre-seed raise in 2025, bringing total funding to $7 million. ## Automation and Compliance Law firms face increasing pressure to comply with complex Outside Counsel Guidelines (OCGs) while often relying on manual, end-of-month billing reviews that can result in write-offs, rejected invoices, and strained client relationships. Current billing practices and OCG non-compliance lead to 8–12 per cent of billable hours lost to non-compliance write-offs and rejected invoices every year. Antidote addresses these challenges by integrating with existing time-recording and practice management systems to review time entries in real time. The AI-powered platform checks entries against client OCGs and internal firm standards, flags potential issues, and suggests compliant revisions before invoices are submitted. ## Future Outlook Nicholas d’Adhemar, founder and CEO of Antidote, said the company was created in response to persistent revenue leakage caused by manual billing compliance processes in law firms. The new funding will support Antidote’s next phase of growth, with a focus on advancing its AI-powered billing compliance platform and expanding its presence in the US. The company plans to further develop its product capabilities, deepen integrations with legal practice and timekeeping systems, and scale adoption among law firms seeking to reduce billing friction and revenue leakage through real-time, automated compliance.