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Data

Legal market data sources compared: open, public and paid

Clio Legal Trends, Telemetry, AWS lawyer lists, Lex Machina, CourtListener, Keyword Planner, Semrush and BLS data side by side, from their own pages.

Last checked October 28, 2026 by our editor

On this page · 5 sections
  1. Which source answers which question?
  2. What does each source cover?
  3. How can each source be used and reused?
  4. What Probative’s data does not cover
  5. How we compared

Law firms, agencies and researchers who want to understand a legal market usually piece together several sources: an industry report, a list of lawyers, a competitive-intelligence platform, court data, keyword tools and government statistics. This page sets them side by side, using only what each source says on its own public pages, with the date we read them.

Key facts

  • Most commercial legal-intelligence platforms here sell access by request or demo and serve large firms, litigators or recruiters.
  • Court-data services work case by case; keyword tools work search by search; government statistics count employers by county.
  • Openly licensed sources with an API are rarer: government statistics are public domain, and Probative’s datasets are CC BY 4.0 with a DOI for each version and an MCP server.
  • Where a page is silent, the table says “Not stated on the page we read” rather than guess.

Which source answers which question?

  • Where are potential clients, county by county? Government statistics and Probative’s demand datasets: crashes, court filings, complaints to federal agencies, and the people who may need a lawyer.
  • How many firms and lawyers already serve a market? BLS and Census counts of law offices, and Probative’s competition datasets, which are built from them. Lawyer lists such as those sold on AWS Data Exchange name individual lawyers.
  • What are the largest firms doing? Telemetry, SurePoint Legal Insights, ALM (now Centellic) and Law360 Pulse follow firms, lawyers, hiring and rankings.
  • What happens in court? Lex Machina, Trellis, UniCourt, Docket Alarm and CourtListener work from court records.
  • What do people search for, and what do clicks cost? Google Keyword Planner and Semrush.
  • How do firms bill and collect? The Clio Legal Trends Report.
  • What may a law firm’s ads say? Probative’s compliance datasets: state ad rules, bar filing, ethics opinions and ad-platform policies.

What does each source cover?

What each source covers, in its own words, as read on October 28, 2026
Source What it coversGeography and unitHow often it updates
Probative open data (this site) Consumer-law markets: demand (crashes, court filings, agency complaints, people who may need a lawyer), supply (law offices, lawyers per resident), state ad rules, ethics opinions, fee rules and pricesUnited States and every state, and county by county in many datasetsSet per dataset (monthly, quarterly, yearly, as sources publish), each with its last-checked date
Clio Legal Trends Report A yearly report on how law firms work, bill, collect and grow, from aggregated, anonymized Clio data and surveys of legal professionals and consumersUnited States, with lawyer rates by state; separate reports for Canada, Australia, and the UK and IrelandYearly, with editions back to 2016
AWS Data Exchange lawyer lists (example: RelevantData, Lawyers: Business in the US) Lists of individual lawyers with practice areas, contact details and social links; the listing we read has 74,000+ business lawyers, and the same seller lists other practice areasAll 50 states and DC, one record per lawyerMonthly
Telemetry (by Briefly) Signals read from the public websites of 1,200+ law firms: practices, people, matters, clients and hiringFirm and office level, centred on the large firms that bill most large-firm revenue worldwideA weekly crawl; it says recording began recently
SurePoint Legal Insights (formerly Leopard Solutions) Law firm and attorney data: hiring, growth, market position, relationships and alumniFirm and attorney levelDescribed as real-time and historical
ALM, now Centellic (Law.com Compass, Am Law rankings) Rankings and data on the largest law firms: revenue, headcount, profitability and practice trendsFirm level: the Am Law 100 and 200, NLJ 500 and Global 200Not stated on the page we read
Law360 Pulse (LexisNexis) Business-of-law news, firm rankings and survey reports, combining Law360 journalism with LexisNexis dataNational, plus state and regional coverageDaily news and alerts
Lex Machina (LexisNexis) Litigation analytics: judges, parties, counsel, experts, outcomes and damagesAll 94 federal district courts, 13 courts of appeal and selected state courts, case by caseNot stated on the page we read
Trellis, UniCourt and Docket Alarm Court records and dockets with search and analytics; Trellis focuses on state trial courtsCase level, in the federal and state courts each one coversUniCourt says it aggregates court data daily
CourtListener (Free Law Project) Case law, federal dockets from PACER, judges and financial disclosuresFederal and state courts, case by caseDatabase replication is instant, the APIs are fast and bulk files are slower, by its own table
Google Keyword Planner Estimates of monthly searches for keywords and the cost to target themThe locations you target in Google AdsForecasts refreshed daily, based on the last 7–10 days
Semrush Keyword research, rank tracking, competitor analysis and AI-search visibility for websitesThe websites and locations you trackKeyword positions tracked daily
BLS Quarterly Census of Employment and Wages and Census County Business Patterns Counts of employers, jobs and pay by industry, law offices included; Probative’s law-offices dataset is built from themCounty, metro, state and nationalQCEW quarterly; County Business Patterns yearly (latest data: 2023)

How can each source be used and reused?

How each source can be used and reused, as published on October 28, 2026
Source Access and published priceLicence and reuseCitable DOIAPIMCP server
Probative open data (this site) Free; no sign-up, no keyCC BY 4.0: reuse, including commercially, with creditYes, for each released version of every datasetYes: static JSON and CSV with an OpenAPI description, no keyYes, free, no sign-in
Clio Legal Trends Report Download form on the page; no price shownNot stated on the page we readNone shownNone listedNone listed
AWS Data Exchange lawyer lists (example: RelevantData, Lawyers: Business in the US) $4,000.00 a month on a 1-month contract, for the listing we readThe seller’s licence agreement (EULA), accepted on subscribingNone shownFiles delivered through AWS Data ExchangeNone listed
Telemetry (by Briefly) Request access; no price publishedNot stated on the page we readNone shownIt says data can be exported or queried from your own agentsAn MCP endpoint is one delivery option it lists as under discussion
SurePoint Legal Insights (formerly Leopard Solutions) Demo request; no price publishedNot stated on the page we readNone shownNone listedNone listed
ALM, now Centellic (Law.com Compass, Am Law rankings) No price publishedNot stated on the page we readNone shownNone listedNone listed
Law360 Pulse (LexisNexis) Subscription; no price on the page we readNot stated on the page we readNone shownNone listedNone listed
Lex Machina (LexisNexis) Demo request; no price publishedNot stated on the page we readNone shownYes, an API is offeredNone listed
Trellis, UniCourt and Docket Alarm Docket Alarm: a free tier, $39.99 a month plus per-use fees, or $99 per user a month. UniCourt: $59, $199 or $399 a month, with API access by quote. Trellis: prices appear after sign-up.Not stated on the pages we readNone shownUniCourt: yes, paidNone listed
CourtListener (Free Law Project) Bulk data files; APIs as a membership benefit or under commercial agreementsNot stated on the page we readNone shownYes: REST APIs, webhooks and database replicationYes
Google Keyword Planner Inside a Google Ads account, once billing details are enteredNot stated on the page we readNone shownNot covered on the page we readNone listed
Semrush SEO plan $139 a month, Starter $199 a month, Pro+ $299 a month, billed monthlyNot stated on the pages we readNone shownAn add-on to the Business tier, paid in API unitsMCP access is listed in the Starter plan
BLS Quarterly Census of Employment and Wages and Census County Business Patterns Free downloads and public APIsPublic domain (U.S. government works); BLS asks to be credited as the sourceNone shownYes: the BLS Public Data API and the Census Data APINone listed

What Probative’s data does not cover

Probative’s datasets count and describe markets; they do not name firms, lawyers or clients, and they do not analyse individual cases or judges. For named-firm intelligence, lateral moves or litigation analytics, the commercial platforms above are built for that work. For keyword volumes and click costs, use a keyword tool. Every Probative dataset, its version and its DOI is listed on the legal marketing datasets page.

How we compared

We read each source’s own public pages on the date shown, logged out, without filling in a form, requesting a demo or creating an account. We quote or summarize what each page says. Where a price, licence or feature is not on the page, we write “Not stated on the page we read” or “None listed”; that means we did not find it, not that it does not exist. For AWS Data Exchange we read one listing as an example; other sellers’ listings differ. Probative’s row is built from our own dataset registry.

Every name here is a trademark of its owner, used only to identify the source. Probative Growth is not affiliated with any of them. If anything here is out of date, email hello@probativegrowth.com with the public source, and we will correct it and log the change on our corrections page. We also compare marketing companies on our comparisons page.

Every page we read

Last reviewed by our data desk.

Browse the legal marketing datasets or add the MCP server to your AI assistant with the steps on the API and MCP page.

Questions firms ask

Where can I find free legal market data by county?

Government sources such as the BLS Quarterly Census of Employment and Wages and Census County Business Patterns count law offices by county, and Probative's open datasets add county-level demand, such as crashes, court filings and people who may need a lawyer, under CC BY 4.0.

Which legal market data sources offer an MCP server for AI assistants?

On the pages we read, CourtListener and Probative run MCP servers, Semrush lists MCP access in one of its plans, and Telemetry lists an MCP endpoint as an option under discussion. The others list none.

Which legal market data sources publish their prices?

Docket Alarm, UniCourt and Semrush publish plan prices, and the AWS Data Exchange listing we read shows its monthly price. Telemetry, SurePoint, Lex Machina and the ALM platforms ask you to request access or a demo. Government data and Probative's datasets are free.

Sources

  1. Clio, Legal Trends ReportAccessed October 28, 2026
  2. AWS Marketplace, RelevantData, Lawyers:Business in the USAccessed October 28, 2026
  3. Telemetry (Briefly), home page and questionsAccessed October 28, 2026
  4. SurePoint, Legal Insights (formerly Leopard Solutions)Accessed October 28, 2026
  5. Centellic (formerly ALM), Competitive Intelligence for law firmsAccessed October 28, 2026
  6. Law360 Pulse, AboutAccessed October 28, 2026
  7. Lex Machina, product pageAccessed October 28, 2026
  8. Trellis, home pageAccessed October 28, 2026
  9. UniCourt, PricingAccessed October 28, 2026
  10. Docket Alarm, PricingAccessed October 28, 2026
  11. Free Law Project, CourtListener Legal APIs and DataAccessed October 28, 2026
  12. Google Ads Help, Use Keyword PlannerAccessed October 28, 2026
  13. Semrush, Plans and pricingAccessed October 28, 2026
  14. Semrush Knowledge Base, APIAccessed October 28, 2026
  15. BLS, Quarterly Census of Employment and WagesAccessed October 28, 2026
  16. BLS, Copyright informationAccessed October 28, 2026
  17. Census Bureau, County Business PatternsAccessed October 28, 2026
  18. Probative, Legal marketing datasetsAccessed October 28, 2026

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