How many lawyers use AI? Legal AI adoption statistics, reconciled

It depends on the question. Recent surveys put legal AI adoption anywhere from 17.7% of solo practitioners to 85% of legal professionals. The numbers disagree mostly because they measure different things: personal use or firm-wide use, any AI tool or a legal-specific one, solos or large firms, and surveys fielded as much as a year apart.

What does each major survey actually say?

Clio, 2026 Legal Trends Report. Clio released its 11th annual report on October 26, 2026. It says 85% of legal professionals report “some level of AI adoption at their firms,” up from 79% in 2025. Clio says the research combines surveys of U.S. legal professionals, surveys of U.S. consumers, anonymized Clio operating data and interviews. The press release does not give the survey’s sample size or field dates. Clio publishes the full report at clio.com/ltr, which we did not review, so the figures here come from Clio’s official press release.

8am, 2026 Legal Industry Report. 8am published this report on March 5, 2026. Its survey ran online from September to October 2025 and drew more than 1,300 responses, mostly from North America. 8am reports three different adoption numbers from the same survey. Nearly 70% of legal professionals use general-purpose AI tools for work, up from 31% a year earlier; the report page puts it at 69%. 42% use legal-specific AI, up from 21%. And firm-wide adoption is 34%, up from 21%. The full report is behind a registration form, so these figures come from 8am’s press release and report page.

Thomson Reuters Institute, 2026 AI in Professional Services Report. This is the fourth edition of the annual report. The survey had 1,514 respondents in 27 countries and ran in October and November 2025 (methodology, page 23). Respondents worked in legal, tax and accounting, corporate risk and government, and were screened to make sure they were familiar with AI. The question was about the organization, not the person. Across all respondents, 40% said their organizations use generative AI, up from 22% the year before. Broken out by organization type, 41% of law firm respondents and 47% of corporate legal respondents said “We are already using” (Infographic 1, page 5). Separately, more than half of all respondents said they use publicly available tools such as ChatGPT (page 3).

American Bar Association, 2024 Legal Technology Survey. The ABA’s Legal Technology Resource Center ran a 275-question survey from October through December 2024. Its AI TechReport, published April 25, 2025, reports that of 512 respondents, 30.2% said their offices were currently using AI-based technology tools. The survey defined AI broadly, as machines that mimic human functions like reasoning, learning or natural language processing. As of November 2026, the 2024 AI TechReport is the most recent one listed on the ABA’s TechReport page.

How do the numbers compare?

Survey	Published	Fieldwork	Who answered	What was measured	Figure
Clio Legal Trends Report	Oct. 2026	Not stated in press release	U.S. legal professionals	Some level of AI adoption at their firm	85%
8am Legal Industry Report	Mar. 2026	Sept.–Oct. 2025	1,300+ legal professionals, mostly North America	Personal use of general-purpose AI for work	69%
8am Legal Industry Report	Mar. 2026	Sept.–Oct. 2025	Same	Use of legal-specific AI	42%
8am Legal Industry Report	Mar. 2026	Sept.–Oct. 2025	Same	Firm-wide adoption	34%
Thomson Reuters Institute	2026	Oct.–Nov. 2025	Law firm respondents, 27 countries, screened for AI familiarity	Organization already uses generative AI	41%
Thomson Reuters Institute	2026	Oct.–Nov. 2025	Corporate legal respondents	Organization already uses generative AI	47%
ABA Legal Technology Survey	Apr. 2025	Oct.–Dec. 2024	512 respondents	Office currently uses AI-based tools	30.2%
ABA Legal Technology Survey	Apr. 2025	Oct.–Dec. 2024	Solo practitioners	Office currently uses AI-based tools	17.7%

Why do the numbers differ so much?

The question. This is the biggest factor. “Have you used AI?” and “Has your firm adopted AI?” are different questions. 8am’s survey shows the gap with one group of respondents: 69% personally use general-purpose AI for work, but firm-wide adoption is 34%. A lawyer who drafts an email with ChatGPT counts as a user in the first measure even if their firm has not adopted AI. Clio’s wording, “some level of AI adoption” at the firm, is the broadest of the four, and its figure is the highest.

The kind of tool. Use of general-purpose AI runs higher than use of legal-specific tools. In 8am’s survey, 69% use general-purpose AI and 42% use legal-specific AI. Thomson Reuters found the same pattern: publicly available tools such as ChatGPT were the most commonly used generative AI platform.

Firm size. Larger firms report much higher adoption. In the ABA survey, office AI use was 47.8% at firms of 500 or more lawyers, 29.5% at firms of 10 to 49, 24.1% at firms of 2 to 9 and 17.7% among solo practitioners. The ABA Journal’s summary rounded the solo figure to 18%. A survey drawn mostly from small firms will report lower firm-level adoption than one weighted toward large firms. Thomson Reuters set quotas for roughly equal representation of different sizes of firms; its law firm respondents were 45% from firms of 1 to 10 lawyers, 36% from firms of 11 to 179 and 19% from firms of 180 or more.

Who was asked. Thomson Reuters screened respondents for familiarity with AI and surveyed 27 countries, with 39% of respondents in the United States. Clio surveyed U.S. legal professionals. 8am’s respondents were mostly in North America. The ABA surveyed attorneys. Clio, 8am and Thomson Reuters all sell technology to lawyers, and Clio’s press release reports results for firms using its own AI tools. That does not make their numbers wrong. Thomson Reuters says its sample was drawn from lists provided by Thomson Reuters. Clio’s and 8am’s press releases do not say how their respondents were recruited.

Timing. Adoption is moving fast enough that a year matters. 8am’s general-purpose AI figure rose from 31% to nearly 70% in one year. Thomson Reuters’ all-respondent figure rose from 22% to 40%. The ABA’s 30.2% comes from a survey fielded in late 2024, about a year before the 8am and Thomson Reuters surveys. Comparing it with 2025 fieldwork mixes two different moments.

Which number should a firm cite?

Pick the figure that matches the claim you are making, and name the survey and year.

• To say how many lawyers personally use AI tools, 8am’s 69% for general-purpose AI is the clearest measure of individual use.
• To say how many law firms have adopted AI as an organization, Thomson Reuters’ 41% of law firm respondents or 8am’s 34% firm-wide adoption are closer to the question.
• To compare by firm size, the ABA’s breakdown is the only one in the sources reviewed here, and it reflects late 2024.
• Clio’s 85% is the broadest measure. Quote its wording, “some level of AI adoption” at the firm, rather than shortening it to “85% of lawyers use AI.”

Do not put figures from different surveys on one trend line. A move from the ABA’s 30.2% to Clio’s 85% is not growth. It is a change of question, population and year.

What do the surveys agree on?

Every survey here that reports a prior-year figure shows adoption rising. In the ABA survey, hesitation centers on accuracy: 74.7% of respondents named accuracy as a major concern, ahead of reliability at 56.3% and data privacy and security at 47.2%. That concern has a record behind it. Court decisions involving lawyers who filed AI-fabricated citations are tracked in The Record: AI hallucination cases involving lawyers.