Syntracts Raises $5.3M to Build Secure, On-Prem Legal AI Infrastructure at Scale

As AI adoption accelerates across the legal industry, the biggest challenge firms face is accuracy and trust. Syntracts serves as an on-prem, API-first infrastructure layer used by some of the world’s largest law firms to bring accuracy, privacy, and control to their AI systems.

Today, we’re announcing a $5.3M seed funding round led by Hyperplane, with participation from Khosla Ventures, Top Harvest Capital, Fortitude Ventures and continued support from Myriad Venture Partners and Point72 Ventures to scale our mission of making secure, on-prem legal AI adoption possible at enterprise scale.

Addressing the Missed Opportunity in Legal AI

Most legal AI tools rely on third-party APIs, cloud-hosted LLMs, or brittle prompt engineering. This is a problem. Third-party APIs come with an unacceptable risk to data privacy and security, and large general AI models suffer from hallucinations, inconsistency, and opacity that make them notoriously unreliable for the precision demands of legal language. Legal teams shouldn’t have to choose between airtight privacy and answers they can trust.

Syntracts takes a fundamentally different approach. Our secure, API-first, on-prem infrastructure layer connects directly into a firm’s document and knowledge systems — not as an app, but as part of the fabric of how legal teams work. It integrates seamlessly with platforms like iManage, NetDocs, and SharePoint, enabling firms to organize documents into structured data and return the results to their existing tools, all from within their own environment. 

AI is only as good as the data behind it. Under the hood, Syntracts uses thousands of small, bespoke AI language models uniquely tailored to your contracts, trained on synthetic data derived from your own documents, and deployable entirely on-premises for maximum security and compliance. Here’s how it works:

• Parsing: Contract broken down into its logical components (sections, clauses, etc.)
• Retrieval: Important clauses accurately identified using novel reverse-RAG technique
• Data Generation: Thousands of synthetic data points generated from small example set
• Optimization: Synthetic data used to fine-tune small, specialized AI models
• Orchestration: AI models analyze contract and deliver structured data output

The result: structured, accurate, and verifiable data that makes existing AI tools smarter, more reliable, and more cost-effective — all while giving firms a secure, on-prem foundation they can scale with confidence.

Founded on Deep Legal and AI Expertise

Syntracts isn't built on hype — it’s built on experience. Our co-founders Doug Bemis and Chris Martin have more than two decades of combined leadership in machine learning, law, and emerging technologies, and they’ve used this expert knowledge to directly solve the specific contract challenges faced by BigLaw and corporate legal teams every day that most AI tools miss. 

“We’re enabling law firms to be AI-ready without compromising privacy,” said CEO and co-founder Doug Bemis, who served as the former CTO at Uber AI Labs. “Firms don’t need another app — they need a secure data layer that powers their existing AI with clean, structured knowledge from their own contracts. That’s Syntracts: infrastructure that runs fully on-prem and makes what they already use smarter, faster, and more reliable.”

The new funding will allow us to build on the early success we’ve already seen, including a landmark multi-year partnership with an AmLaw 25 firm and selection to A&O Shearman’s renowned Fuse incubator, where the team is helping leading firms integrate AI responsibly and at scale.

Request a Demo of Syntracts

If you’d like to see what Syntracts can do to turn your contracts into structured, actionable data, we’d love to hear from you. Click here to schedule a demo.