The Legal AI Index
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№ 42 · Tier 4 · Mid-Market, Regional and Specialist

Lewis Silkin

Harvey firm-wide.

Platforms in use
Harvey
Proprietary tools and programmes
  • Delphius

    Employment law AI intelligence platform launched 2026, built with London digital product agency Planes (six-week prototype, refined over six months). Conversational AI interface drawing on curated employment law knowledge across dozens of jurisdictions. Hundreds of companies in sales pipeline within months of launch.

  • Rockhopper

    Flexible legal staffing model (senior employment lawyers working remotely on fixed-fee work). Celebrated 10th anniversary 2024. NOT a technology brand.

What is happening
  • ·Harvey rolled out firm-wide Feb 2025.
  • ·Miskella: clients were getting '70% if you're lucky' from ChatGPT/Gemini/Copilot answers; in-house teams said they would pay for an authoritative engine.
  • ·Won significant accounts from larger firms because Delphius does not remove the lawyer.
  • ·Hired additional knowledge lawyers to curate; leaning on Ius Laboris global employment law network (57 countries) for jurisdictional content.
  • ·Delphius positioned as foundational architecture for a broader client digital environment (data analytics, dashboards, predictive insights, document workflows).
Sources