75 Legal AI Statistics for 2026

A law firm with a few hundred lawyers and staff lives in its documents: matter files, discovery productions (the batches of documents each side hands the other in a case), contracts, research memos, and the email around all of them.

The lawyers and paralegals already draft and summarize with AI, some of it on tools the firm bought and some on tools nobody approved. The bill that goes to the client often looks the way it did before, and nobody has decided what the firm charges when a task that took five hours now takes one.

Most of these surveys are run by companies that sell legal software, each with its own sample and wording, and none reports firms of 100 to 500 people as a group of their own, so read them as direction, never as one series.

Most Firms Still Charge the Way They Did Before AI

Of the in-house legal professionals Thomson Reuters surveyed, 71% expect the firms they hire to change the way they charge as AI use increases. 28% of law firm respondents say their firm has changed its pricing in response to AI, and 62% say it is unchanged.²

What the in-house respondents expect splits three ways: 33% expect new pricing with more cost certainty, 23% expect lower fees, and 15% expect similar or higher fees for measurably better outcomes.²

Clio's solo and small report compares four sizes of firm on the same question. 86% of solo firms and 78% of small firms have made no pricing change since adopting AI, against 51% and 46% in Clio's two larger groups.⁴ The larger firms have moved further, and about half of them have not moved at all.

Often the bill does not tell the client either. Four in ten law firm respondents in Bloomberg Law's survey say their firm does not disclose attorney AI use on client bills at all.³

The rule on hourly work is plain. Under the American Bar Association's Formal Opinion 512, which is model guidance, a lawyer billing by the hour charges the actual time spent: in the opinion's own example, the fifteen minutes spent putting the facts into the tool and the time spent checking its draft.⁵

The rest is arithmetic, not a survey figure: a task that took five hours and now takes one, billed by the hour, bills 80% less.

Firms Say Clients Are Not Asking, and In-House Legal Teams Say They Are Waiting

Only 6% of 8am's respondents said clients are asking for AI-related price cuts, and 3% said clients often ask for proof of AI-driven efficiency.⁶ In Thomson Reuters' survey of law firm professionals, 11% believe they could start losing clients over AI within 12 months, and 50% do not believe they would lose clients over it at all.²

Thomson Reuters also asked 203 people in corporate legal departments, the buyers of outside counsel.² 71% of them call AI-enabled quality from outside counsel very important or essential, and 3% say most of their firms deliver it; on speed and cost the split is 70% against 6%.²

11% are already reconsidering firm relationships over it, and another 22% will within 12 months if they see no AI-enabled value.² 61% report pressure from inside their own companies to adopt AI faster.²

The two surveys asked different people. 83% of 8am's respondents were solo practitioners or at firms of two to five lawyers, and its largest practice areas were family law, personal injury and immigration.⁶ Thomson Reuters' 203 work in companies' legal departments.

Consumers ask for something else: to be told. In Clio's consumer survey, 82% want to know when their lawyer uses AI and 70% trust a lawyer more when the use is disclosed, while 6% identify the technology as a deciding factor in choosing a lawyer.⁷

Most Firms Use AI Now, and the Larger Ones Use It More

Clio, a practice management software company, puts AI use at 71% of solo practitioners and 75% of small firms⁴, and 86% of firms with 20 to 199 employees report using it¹. Its October report has 85% of legal professionals describing some level of AI adoption at their firm, up from 79% a year earlier.⁷ Bloomberg Law's first practice survey of 2026 has 83% of lawyers using AI at work.⁸

The bar's own count is a year older and asked a narrower question. In the American Bar Association's survey of late 2024, 30.2% of attorneys said their offices used AI-based tools, rising from 17.7% of solos to 47.8% at firms of 500 or more lawyers.⁹ Every survey here that splits by size points the same way: the bigger the firm, the higher the share.

The number that matters more for a firm your size is the gap between the people and the firm. 8am, another practice software company, found 69% of legal professionals using chatbots anyone can open, such as ChatGPT, for work, more than double the 31% of a year before, while 46% said their firm had implemented those tools as a firm, 58% at firms with 20 or more lawyers.¹⁰

Most lawyers and staff now use AI somewhere in their work, so the share alone tells you little about where your firm stands. The figures that separate firms are what the AI does, who approved it, and whether the policy changed.

A Third of Law Firm Staff Use AI Tools Their Firm Never Approved

Most of that is paperwork: of 8am's respondents who use those chatbots, 47% use them to summarize documents.¹⁰

28% of all respondents use AI every day and another 31% several times a week.¹⁰ The hours saved are modest and self-reported: of those using AI, 38% say one to five hours a week, and a third say it saves no time but improves the work.¹⁰

A good share of that paperwork runs on tools nobody chose for the firm. 34% of the law firm professionals Thomson Reuters surveyed use AI tools at work that their firm never authorized.² Clio found 47% to 48% of solo and small firms relying on generic AI tools.¹¹

Larger Firms Have AI Policies More Often, and Few Count What AI Saves

57% of solo firms and 55% of small firms have no AI policy in place,¹² against 30% and 24% in Clio's two larger groups.¹³ In Clio's survey of firms with 20 to 199 employees, 60% report formal policies guiding AI use.¹

In 8am's mostly small-firm sample the picture is thinner: 9% of respondents say their firm has a policy in place that is actively enforced, 43% say it has none and no plans for one, and 54% say it offers no AI training and has no plans to.¹⁰

Half of the law firm professionals Thomson Reuters surveyed say their firm's AI strategy is invisible in day-to-day work.² Where a defined strategy exists, 64% say AI is meeting or beating their expectations for creating value; where none exists, 29%, which says the two travel together and not which causes which.²

Across legal, tax, accounting and the other professional services Thomson Reuters surveyed, not legal alone, 18% say their organization tracks the return on AI, and another 40% do not know whether anyone measures it.¹⁴

The firms that can price AI work are the ones that count, per matter, what the document work took and what a lawyer checked. That count belongs to whoever runs operations, before the next fee conversation with a client.