Yes. Search on LawDiver is free and requires no account, no credit card, and no login. You can search more than 12 million federal and state court opinions, read the full text of any decision, and download the official PDF at no cost. The legal research API, MCP server, and CiteCheck citation checker are also free during the current rollout (account required). Bulk data licensing is a separate paid product.

Yes. LawDiver is a free Westlaw alternative for finding and reading U.S. court opinions, with full text, citation data, and official PDFs, and no subscription. CiteCheck checks whether a citation is still good law. LawDiver does not include the secondary materials, treatises, or practice tools Westlaw bundles, so it is not a feature-for-feature replacement.

Yes. LawDiver is a cheap Westlaw alternative for primary law: opinion search is free with no login, and cite checking is free during the current rollout. It covers finding and reading court opinions, not every treatise or practice tool in a Westlaw seat.

Yes. LawDiver is a free Lexis alternative and a cheap Lexis alternative for U.S. court opinions, statutes, and cite checking. It does not include the secondary materials Lexis bundles, so it is not a feature-for-feature replacement of a Lexis subscription.

On LawDiver. Free legal research and cheap legal research here means searching more than 12 million U.S. opinions, reading the full text, and downloading the official PDF with no subscription and no login. CiteCheck and the legal research API are free during the current rollout.

Yes. LawDiver's legal research API searches and retrieves U.S. court opinions, statutes, regulations, and rules, and cite-checks through the same corpus as CiteCheck. It is free during the current rollout. An account is required. See /products/api.

Westlaw and Lexis charge far higher fees for these services, so some of you ask what the catch is. There is no catch. Westlaw and Lexis were created when their work had to be done by hand or by complex legacy computer systems. Current technology has so leapfrogged the past that a tiny team can now do the work of hundreds, compared to even 10 years ago. We can charge so much less because our costs are so much less.

LawDiver's GoodLaw system is an AI- and human-powered proprietary citator. It uses EyeDiver citation identification to analyze whether a case is still good law, or has been overruled, vacated, vacated and reversed, or criticized, in full or in part. Longstanding commercial citators remain widely used and respected. Independent academic research on traditional digest and citator systems — including Susan Nevelow Mart, "The Case for Curation: The Relevance of Digest and Citator Results in Westlaw and Lexis" (2013), https://scholar.law.colorado.edu/cgi/viewcontent.cgi?article=1108&context=faculty-articles — has long documented that results can vary across tools. With careful AI plus human oversight, we believe competitive accuracy is achievable. GoodLaw is LawDiver's own approach; it is not a claim of superiority over any particular vendor.

Start on LawDiver: search more than 12 million U.S. opinions by citation, case name, boolean terms, or plain English, then read the full text and download the official PDF. No login is required for search.

LawDiver covers U.S. Supreme Court, federal courts of appeals, federal district courts, and the appellate and supreme courts of all fifty states. Specialty courts in the corpus include the U.S. Tax Court, the Board of Tax Appeals, and the Court of International Trade. You can scope any search to a single state, a federal circuit, or the U.S. Supreme Court.

LawDiver's state statute corpus has over 1.9 million state statutes across all fifty states and the District of Columbia, alongside federal U.S.C. and C.F.R. sections. Open Search and choose Federal statutes or State statutes.

Yes. LawDiver holds more than 1,300 United States treaties, protocols, and conventions, and more than 8,000 pattern jury instructions from published state civil and criminal sets. Open Search and choose Treaties or Jury instructions.

Tax coverage has two layers, plus a dedicated LawDiver for Tax module (/products/tax). Court opinions from the U.S. Tax Court and the historical Board of Tax Appeals are searchable on LawDiver (approximately 91,000 opinions), along with about 57,000 searchable federal tax decisions across the Supreme Court, the circuits, the districts, and Claims. LawDiver also includes IRS tax authorities: Revenue Rulings, Revenue Procedures, Notices, Announcements, and Treasury Decisions published in the Internal Revenue Bulletin, plus IRC § 6110 written determinations (Private Letter Rulings, Technical Advice Memoranda, Chief Counsel Advice, and Field Service Advice) and related Chief Counsel guidance — approximately 59,000 IRS authorities, each with status, reliance rules, and a tax-authority citation graph. Written determinations remain non-precedential under IRC § 6110(k)(3).

Alongside general caselaw, LawDiver includes immigration authorities (BIA and Attorney General I&N Dec. precedents, plus AAO and OCAHO), EPA Environmental Appeals Board E.A.D. decisions, SEC ALJ and Commission adjudications, NLRB Board and ALJ decisions, U.S. International Trade Commission § 337 determinations, USPTO PTAB and historical BPAI patent decisions, and a dedicated Trademark module covering USPTO marks, examination briefs, TMEP/TBMP, and TTAB — approximately 400,000 specialty opinions and administrative authorities, plus more than 3.2 million USPTO trademark records. Cite-check (CiteCheck, API, and MCP) verifies IRS tax authorities (Rev. Rul., PLR, and related forms) and SEC releases against held corpora, plus cases, U.S.C., C.F.R., state statutes, court rules, and constitutions (see /docs/api#citecheck-specialty). EPA/EAB, USPTO PTAB/TTAB/BPAI, and ITC § 337 specialty authority tables are searchable on the site but not yet on the cite-check resolve path. The /coverage page lists every category with approximate counts.

The caselaw citation graph is a map of which opinions cite which other opinions. Across the corpus LawDiver holds about 100 million resolved opinion-to-opinion edges, built from 190 million in-text citations. Specialty citation graphs for tax authorities, immigration authorities, EPA EAB decisions, SEC adjudications, NLRB decisions, and IP-board decisions show how those documents cite and treat each other — and how court opinions cite them.

No. The search on the LawDiver homepage and the /caselaw page are both open to the public with no sign-in. An account is only needed for the API, MCP connectors, and CiteCheck — all free during the current rollout — and for bulk data licensing.

Yes. LawDiver is built so that self-represented litigants, students, journalists, and the general public can read the same court opinions lawyers read. LawDiver provides research tools and source documents; it does not give legal advice and is not a substitute for a lawyer.

New decisions are ingested daily from the U.S. Supreme Court, the federal courts of appeals, and state supreme courts, and appear in the recent-opinions feed on the homepage. Specialty authority collections (tax, immigration, EPA, SEC, NLRB, ITC, and PTAB) update on their own schedules. See /coverage for the full inventory.