Wordsmith AI raises $25M for agentic legaltech

Edinburgh-based legal technology startup Wordsmith AI has raised a $25 million Series A round, led by Index Ventures. The company, which builds AI infrastructure to deploy fleets of legal agents across organisations, is capitalising on the rapid transformation of the legal sector driven by generative AI.

The round, which also includes participation from Scottish Enterprise, brings Wordsmith’s valuation above $100 million, making it one of the fastest-growing tech startups to emerge from Scotland’s ecosystem.

“For the first time, AI infrastructure can be embedded across companies, with fleets of agents that you can train to support every corporate function - cutting deal cycles, answering queries, and processing complex workflows,” said Ross McNairn, CEO and co-founder of Wordsmith. “Our Legal Enablement Platform is like air traffic control for GCs and in-house teams, helping them guide teams to the right decisions faster.”

The company already counts firms such as Trustpilot, Remote.com, Deliveroo, Multiverse, and Docplanner among its customer base. To support this growth, Wordsmith plans to open new offices in London and New York later this year.

“We are helping GCs embed their legal intelligence across the business,” McNairn added. “Gone are the days of legal being seen as a blocker; it is now a revenue accelerator.”

Wordsmith employs a new professional role in legal departments: the "legal engineer". Unlike traditional legal operations roles, legal engineers focus specifically on training, deploying, and maintaining fleets of AI agents.

This hybrid role requires both legal understanding and technical acumen, reflecting the broader evolution of the legal profession in the AI era.

“We’re witnessing the birth of an entirely new role in legal: the legal engineer,” said McNairn. “These are the people training, deploying, and managing fleets of AI agents. We’re helping to re-skill an entire generation to do it.”

Deputy First Minister Kate Forbes added: “Private investment is an essential building block of a strong and growing economy… It is fantastic news that Wordsmith AI, a Techscaler member, has secured its $25 million Series A funding round in such a short space of time.”