Measures the Change-Response Gap: how fast industries are changing versus how fast companies are responding. 50 means they are even. Higher means the gap is wider.
October 2026: Legal & Professional Services scores 65 (Significant Gap), with a Change Score of 69 and a Response Score of 39. Harvey, a legal AI company, closed a large funding round, and OpenAI launched a legal model that four big firms adopted right away. Morgan & Morgan, a large plaintiffs' firm, pledged a billion dollars to AI. Meanwhile, courts kept logging fake citations, and few firms had changed how they price AI work.
Legal & Professional Services companies are keeping up with about 55% of the change. Evidence: Strong (13 sources).
History: May 64 · Jun 64 · Jul 64 · Aug 64 · Sep 67 · Oct 65
Clients are asking for clearer pricing. A September analysis by BigHand, a legal software company, found 49% of law firms saw rising client demand for alternative fee arrangements (eDiscovery Today). The same analysis found 51% of firms saw rising demand for financial transparency. The ledger holds no other client evidence for September. In August, a Wells Fargo survey found Am Law 200 realized rates grew 7.3% while collection cycles slowed (Reuters).
Lawyers are leaving big firms for AI companies. A Firm Prospects report found 46 lawyers left Am Law 200 firms for AI companies in the first half of 2026 (Law.com). Many moved into new legal engineer roles. A September survey of 510 in-house legal leaders and finance chiefs at companies with at least $250 million in revenue found budgets falling behind costs (Law360 Pulse). Unfunded AI work, rising salaries and outside counsel fees outpaced budget increases. In August, NALP, the group that tracks law graduate jobs, reported that the largest firms hired 7.5% fewer new graduates (Reuters).
Vendor funding kept growing. Harvey, a legal AI company, raised $550 million on September 9 at a $15.5 billion valuation (TechCrunch). TechCrunch reported its annual recurring revenue passed $400 million. The same report says about 80% of Am Law 100 firms use its tools. Bloomberg reported that Legora, a rival legal AI company, is in talks to raise at least $300 million at about $8.5 billion (Bloomberg). Bloomberg says Legora has passed $200 million in annual recurring revenue.
The ledger holds no new law, rule or ruling for legal services in September. The most recent action came in August, when Illinois Governor Pritzker signed HB 5487 on August 7. The law limits how outside investors and management services organizations can influence law firms (Holland & Knight). Firms still face the same investor limits and AI rules as last month.
Fake AI citations in court filings keep piling up. A public database kept by researcher Damien Charlotin counted 2,046 court cases worldwide involving AI-fabricated citations or content as of September 21 (Haqq). The same database showed roughly 200 a year earlier. In August, outside counsel for State Farm, the insurer, admitted seven fabricated citations in a Los Angeles case (CalMatters). The ledger has no September evidence on how firms discipline their own lawyers.
OpenAI moved into legal work directly. On September 18 it launched Astra for Law, a model built on GPT-6 (Global Legal Post). It comes with a legal search index of more than 230 million case law, statute and regulatory sources. Sullivan & Cromwell and Cooley, two large law firms, were named early adopters. In August, Thomson Reuters, the legal information company, made its CoCounsel Legal agent generally available (Thomson Reuters).
Law firms hold no earnings calls, so the closest evidence is a trade survey. The ILTA 2026 Technology Survey covered 508 firms, and 94% said they use or explore generative AI (eDiscovery Today). ILTA is a legal technology association, and the answers are self-reported. The survey found 52% of firms have fully deployed Microsoft Copilot to their lawyers. In August, Thomson Reuters raised its outlook on its second quarter call (Thomson Reuters).
Big firms are posting AI jobs, though the ledger shows postings and not hires. Disney's 1,000-person legal and global affairs group is recruiting a director of AI enablement and legal engineering at up to $260,000 (Artificial Lawyer).
One firm made a large public commitment. Morgan & Morgan, a large plaintiffs' firm, committed at least $1 billion to AI and legal technology over the next decade (ABA Journal). It unveiled its MX2 platform on September 14. The firm's own figures show nearly 5,000 monthly active internal users. They also show more than 2 million agent interactions. The ledger shows no similar pledge from other firms this month.
Adoption of OpenAI's Astra for Law came fast. Latham & Watkins, Ropes & Gray, Cooley and Sullivan & Cromwell became early adopters in September (Artificial Lawyer). Each is building firm-specific deal-review and diligence tools on the platform. An ABA Journal headline says Morgan & Morgan aims to sell its platform to other firms (ABA Journal). Neither report gave usage figures for the four firms.
Firms are moving faster on tools than on pricing. BigHand's 2026 legal pricing survey, reported by Artificial Lawyer on September 28, found that only 29% of law firms have changed how they price AI-augmented work (Artificial Lawyer). By contrast, the four firms that adopted Astra for Law did so in September, the month Astra for Law launched (Artificial Lawyer). Harvey's $15.5 billion valuation arrived months after an earlier round (TechCrunch).
The score of 65 reflects a Change Score of 69 and a Response Score of 39. Change leads response by 30 points. Each indicator is rated 0 to 5 in half points by two independent reviewers, and the ratings shown are their average. How we score.