The latest data & insights
First-party analysis of real-world data, not surveys or vendor claims. We dig into how professional-services firms are actually adopting AI and modern tooling, so operations leaders can see what's out there and sharpen their own playbook. Pick a practice area to dig in.
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Law Firm AI & Operations by the numbers
We analyzed real hiring and people data across all 500 of the top US law firms to map how AI and modern operations are actually taking hold, firm by firm.
Adoption & momentum
How fast AI is spreading across the field.
Legal AI hiring has grown 30× in four years
Just 2.5 firms a month posted AI roles before ChatGPT; by 2026 the average is 58.8.
AI adoption has crossed into the early majority
By mid-2026, 37% of the top 500 firms had hired for AI at least once, up from 5% at the end of 2023.
One in five active firms now hires for AI in a given month
Monthly AI hiring reached 20.9% of all active firms in 2026, up from 6% in 2022.
Tools & vendors
Which platforms and vendors firms are betting on.
- CopilotChatGPT
Microsoft Copilot has overtaken ChatGPT in law firms
Copilot passed ChatGPT in mid-2025 and now leads the field, with 25 firms hiring around it versus 15 for ChatGPT.
The AI tools law firms are hiring around
Firms hiring around each tool in the most recent quarter (2026 Q2): Copilot leads, and Claude has edged ahead of ChatGPT.
Claude went from nothing to a top model in a year
Anthropic's Claude reached 14 firms by 2026 Q2, overtaking ChatGPT among the frontier models.
Harvey leads the breakout of legal-specific AI vendors
Purpose-built legal AI is now a real category, led by Harvey across the top 500 firms.
Westlaw still owns legal research
Westlaw appears across more firms than any other research tool, ahead of PACER and Lexis.
iManage and SharePoint dominate document management
iManage and Microsoft SharePoint are near-universal; NetDocuments trails well behind.
Aderant and Intapp run the practice and billing stack
The financial backbone of large firms is built on Aderant, Intapp, and Elite.
Relativity towers over eDiscovery
Relativity shows up across nearly three times as many firms as the next eDiscovery tool.
Azure is the cloud of choice for big law
Among firms on the cloud, Microsoft Azure leads AWS and Google Cloud combined.
Microsoft owns workflow automation in law firms
Power Automate and Power Apps dwarf standalone RPA tools like UiPath and Zapier.
- CopilotGenerative AIChatGPTClaude
The race to lead the model stack
Copilot pulled ahead in 2025, but Generative AI, ChatGPT, and a surging Claude keep the field close.
Nearly every firm runs on Microsoft
Office, Excel, and Word are effectively universal across the 505 firms; Teams is close behind.
Chrome River leads expense and e-billing
Chrome River shows up across more firms than the rest of the expense and e-billing field combined.
Most firms have already touched a major model
Across the full window, 90 firms have hired around Copilot, 82 around OpenAI, and 43 around Claude.
What drives adoption
The leadership, infrastructure, and scale that predict who adopts.
Firms with an innovation leader are 3× as likely to use AI
73% of firms with a named innovation leader use an AI tool, versus 25% of those without one.
A knowledge-management leader is the strongest adoption signal
76% of firms with a KM leader use an AI tool, versus 26% of those without one.
Cloud is the foundation AI is built on
61% of cloud-based firms use an AI tool, versus 12% of those still off the cloud.
AI adoption rises sharply with the size of the tech stack
Firms in the top quartile by tools used adopt AI at 93%, versus 5% in the bottom quartile.
Modernization drops off a cliff below the top 100
The top 50 firms average a 67 modernization index; the bottom third sit under 10.
Early movers still have the deepest AI stacks
Firms that adopted before 2024 average a 64 modernization index today; 2026 adopters sit at 38.
AI adoption is two-sided: the old guard and the upstarts lead
Firms founded before 1950 and after 2010 adopt AI at nearly 50%, while mid-century firms sit around 25%.
Size is the single best predictor of modernization
Plot all 505 firms by headcount and the trend is unmistakable: bigger firms score higher (Pearson r = 0.68).
Maturity & depth
How deep the modernization actually runs.
Frontier-model firms operate on another level
Firms running Claude or OpenAI use 312 distinct tools on average, versus 50 for firms with no AI.
For most firms, AI is still one tool, not a stack
66 of 185 adopters use a single AI tool; just 37 run five or more.
A small group of leaders, a long tail of laggards
21 firms score 80 or above on modernization; 327 score under 30.
Broad, cloud-based stacks drive the score; AI depth is still rare
Tool breadth and cloud do the heavy lifting; dedicated AI breadth contributes just 4.9 of a possible 30 points.
The modernization gap widens fast below the top 100
Top-100 firms average a 61 modernization index; across all 505 the average is 26.
AI is still a sliver of all tech hiring
Even at its peak, AI makes up just 1.6% of tech mentions, up from near zero in 2022. The runway is enormous.
Frontier firms run a real stack; everyone else runs one tool
Firms on Claude or OpenAI average 4.4 AI tools each; Copilot-only firms average 1.9, and the field 2.9.
Frontier-model firms score 6× higher on modernization
Firms running a frontier model average a 67 modernization index, versus 11 for firms with no AI.
Law firms are quietly technical
Hundreds of firms hire for SQL, Power BI, and Python, the toolkit of a software team rather than just a back office.
Geography & peers
Where the leaders and laggards are.
The West is winning legal AI; the South is falling behind
43% of Western firms use an AI tool; in the South it's 28%, trailing every other region.
Massachusetts is the surprise leader among states
60% of Massachusetts firms use an AI tool, well ahead of the next states; Florida trails badly at 9%.
Dallas and Philadelphia lead the cities on AI
Three in four firms in Dallas and Philadelphia use an AI tool.
Talent & org
How firms are staffing for the shift.
Paralegals are the fastest-growing role in big law
Paralegal headcount is up 13% year over year, outpacing lawyers at 5%.
- Innovation rolesAI roles
Firms are staffing up on innovation and AI roles
Quarterly postings for innovation roles climbed from 6 to 34; dedicated AI roles went from 0 to 30.
Innovation and KM leaders are common; Chief AI Officers are not
120 firms have an innovation leader and 109 a KM leader, but only 2 have a Chief AI Officer.
What firms are building
A digest of the AI and automation projects showing up in job posts across the cohort.
Firm-built GenAI assistants
Secure, in-house GPT apps that let attorneys draft, summarize, and analyze documents without sending data to public tools.
Piloting and rolling out legal AI
Evaluating purpose-built legal AI, running practice-group pilots, and promoting the winners into firm-wide production.
In-house ML and GenAI engineering
Full-stack teams shipping production GenAI features with embeddings, retrieval-augmented generation, and fine-tuned models.
Document automation and drafting
Template-driven assembly and AI-generated memos, letters, and routine documents that still come back to a human for review.
Knowledge management and search
NLP and semantic search across a firm's own work product so lawyers can find and reuse what already exists.
Back-office and finance automation
Automating billing, accounts payable, intake, and general-ledger processes with OCR and robotic process automation.
Governance, training, and enablement
Setting acceptable-use guardrails and data-governance rules, plus prompt libraries and training to get staff productive.
Based on job-posting and people data across the top 505 US law firms.