Law Firm AI Adoption Nearly Doubles Year Over Year, New Survey Finds

Published 2026-02-18 · Legal Niche Pros

Generative AI use among law firms and corporate legal departments has climbed sharply, according to the 2026 AI in Professional Services Report cited by Thomson Reuters. The survey found 41% of law firms and 47% of corporate legal departments report their legal teams are actively using generative AI tools, up from 28% and 23% respectively the year before.

Even as adoption grows, the survey found strong professional resistance to expanding AI's role much further: 96% of legal professionals surveyed said allowing AI to represent clients in court would be 'a step too far,' and 83% said using AI to directly provide legal advice would be an inappropriate use of the technology. Among lawyers who haven't yet used an AI tool professionally, half cited concerns about output quality, while a smaller share cited data security worries.

Separate estimates cited in legal-tech industry coverage put the AI market within the legal sector growing from roughly $4.59 billion in 2025 to about $5.59 billion in 2026 — a projected annual growth rate above 22%. Coverage of the shift also points to a February 2026 federal ruling that materials generated with the help of third-party AI tools do not automatically retain attorney-client privilege absent explicit confidentiality safeguards with the AI provider, a distinction legal departments are now building into internal AI-use policies.

For consumers and small businesses, the practical takeaway is less about courtroom AI and more about volume: as noted in related coverage on debt collection lawsuit trends, AI-assisted document generation is already showing up in the sharp rise of routine civil filings, even as its use for actual legal judgment remains something the profession is treating with visible caution.

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