Perplexity provides access to Midpage’s premium legal research database, covering 13.8M U.S. federal and state court opinions, statutes, regulations, and constitutions with an AI-powered citator. Midpage as a premium data source is available to all Perplexity users, and no sign-in or separate subscription is required.

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Why use Midpage as a premium data source?

  • Access real, verified primary law – Search 13.8M full-text U.S. court opinions (federal and state), statutes, regulations, and constitutions with hyperlinked citatios you can trust.

  • Get AI-powered citator signals – See negative, caution, and neutral treatment indicators with supporting reasoning and quotations to understand how cases have been cited and treated.

  • Stay current – New cases appear within hours of publication, with regular updates across all federal appellate and district courts plus 50 states + D.C.

  • Built-in for all users – High-quality legal research is convenient and reliable without requiring a separate Midpage account.

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Coverage and Data Distribution

Midpage’s database provides comprehensive coverage of U.S. primary legal authority with particularly strong representation in litigation-critical areas:

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Key Coverage Areas

  • Federal Case Law – All appellate and district-level courts, including unpublished opinions and select administrative tribunals.

  • State Case Law (50 states + D.C.) – All appellate-level courts, plus unpublished and trial court data from select state jurisdictions.

  • Statutes, Regulations & Constitutions – Full text of codified statutes and regulatory material across federal and state jurisdictions.

  • AI-Powered Citator – Treatment signals (negative, caution, neutral) with supporting reasoning and direct quotations.

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How to use Midpage as a premium data source

Simply choose Midpage as a source from the Set sources for search menu when starting a new session.
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Alternatively, you can mention @Midpage when starting a new session to select Midpage as a source.
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You can combine Midpage with Web search or other sources (including other App Connectors) to enrich your answers, integrating legal authority with news, analysis, and internal documents.

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What can I ask?

Below you’ll find examples of queries you can ask Perplexity using Midpage’s premium legal data:

  • Finding Cases – What are the four factors courts consider when deciding whether to grant a preliminary injunction under U.S. federal law, and which cases establish them?

  • Jurisdiction-Specific Research – Can a federal court compel arbitration if the arbitration is to occur outside of its district? Focus on 9th Circuit case law.

  • Evidentiary Standards – Find cases in New York state court applying Daubert principles to exclude expert testimony on economic damages in a breach of contract dispute.

  • Administrative Law – What is the standard of review when reviewing agency statutory interpretation, and how has it evolved post-Chevron?

  • Comparative Analysis – Compare how the Second and Ninth Circuits treat qualified immunity in excessive force cases involving pretrial detainees.

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How many queries can I run?

You can run a limited number of premium queries each day, with exact limits varying by plan across Free, Pro, Perplexity Max, Enterprise Pro, and Enterprise Max.