Soxton AI Acquires Cipher to Secure Its Full-Stack Autonomous Legal Platform

New York-based Soxton AI has officially acquired Cipher, a San Francisco startup specializing in real-time security for agentic applications. This strategic move aims to fortify Soxton’s AI-powered law firm with advanced protections for autonomous workflows and sensitive startup data. By bringing Cipher’s technology in-house, the firm ensures that its growing list of early-stage clients can leverage AI tools without compromising their proprietary information.

In a notable display of its platform's capabilities, Soxton executed the entire acquisition using its own software. The platform managed every stage of the transaction, from negotiating terms to drafting definitive agreements and final execution. This self-contained M&A process saved the company approximately $80,000 in traditional legal fees, serving as a live demonstration of how AI-driven infrastructure can modernize complex corporate deals.

Founder and CEO Logan Brown emphasized that protecting the valuable data of vulnerable early-stage companies was a primary driver for the deal. Brown, a Harvard J.D. and former lawyer at Cooley LLP, launched Soxton to democratize access to high-end legal services through flat-fee models and automated workflows. The integration of Cipher’s security layer will allow Soxton to build multi-agent systems more efficiently while maintaining a "lawyer-in-the-loop" oversight model.

Looking ahead, Soxton plans to utilize Cipher’s expertise to scale its autonomous legal stack across various practice areas. The Cipher team, including Co-founder and CTO Ransford Antwi, will join Soxton to focus on developing secure, reliable agentic workflows. These developments are expected to further streamline incorporation, equity issuance, and fundraising processes for the hundreds of startups already utilizing the platform. This acquisition follows Soxton’s emergence from stealth in late 2025 with $2.5 million in pre-seed funding. With investors like Moxxie Ventures and Strobe backing the vision, the company is positioned to continue its disruption of the traditional billable-hour model. By combining legal expertise with cutting-edge agentic security, Soxton is building a future where complex business transactions are faster, safer, and significantly more affordable for founders worldwide.