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Wordsmith AI raises $25m series A to deploy AI agents and transform legal roles

IV_Perspectives_Default.jpg Ross McNairn, CEO and Co-founder, Wordsmith AI Play video

Hear from co-founder Ross McNairn directly about the Wordsmith journey and vision

Quick Take

  • Wordsmith AI embeds fleets of legal AI agents across organisations, powering quicker deal cycles, query resolution and complex workflows.
  • The company is laser-focussed on in-house legal teams, turning them from blockers into revenue accelerators, and creating a new generation of ‘legal engineers’.
  • Trustpilot, Deliveroo, Multiverse, Docplanner and Remote are among Wordsmith AI’s clients, along with hundreds more in-house teams.
  • Index Ventures is leading the $25m Series A funding, having led the startup’s $5m round in 2024.

Index Perspective from Hannah Seal

AI is revolutionising the legal profession, and Wordsmith is leading that charge. They’re not just building a co-pilot; they’re creating the foundational infrastructure for how entire organisations interact with legal. This is about reshaping enterprise operations, not just supporting legal teams. We’re excited to back Ross and the Wordsmith team as they define a new category at the intersection of law, technology and AI.

The Details

Legal departments have often been seen as the slow-moving gatekeepers of corporate decision-making, especially for technology companies. Risk-averse and administratively burdened, they are more likely to block fast-paced decision-making than enable it. Wordsmith AI is turning this conventional way of working on its head through AI-powered infrastructure that transforms how organisations interact with and are supported by legal.

By scaling its AI infrastructure that deploys legal agents across organisations, Wordsmith AI empowers businesses to achieve faster outcomes across deal cycles, query resolution, and workflow processing. In the process, it’s supporting the creation of the next generation of jobs, giving rise to roles such as ‘legal engineers’. While legal operations managers traditionally handled software deployment, new skills are needed for this evolving function that focuses on training, deploying, and supporting AI agents.

To support this shift, Wordsmith is investing significantly in training and upskilling legal professionals, enabling them to harness the full potential of its platform. This marks a broader generational change in the legal labour market, as professionals adapt to leverage AI and take on more strategic, high-impact roles.

“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. Our Legal Enablement Platform is like air traffic control for GCs and in-house teams, helping them guide teams to the right decisions faster,” says co-founder and CEO Ross McNairn. “Gone are the days of legal being seen as a blocker, it is now a revenue accelerator.”

Wordsmith AI was founded by Ross, a lawyer turned engineer, in 2024. He has previously helped scale three tech unicorns as Chief Product and Technology Officer at TravelPerk, vice president of Product at Let Go, and Head of Product at Skyscanner.

With a customer base that includes Trustpilot, Remote.com, Deliveroo, Multiverse, Docplanner, and hundreds of other in-house teams, Wordsmith is recording strong revenue growth across the UK and US. The company is set to open offices in both London and New York later this year.

In this post: Wordsmith

Published — June 3, 2025