The best AI for a paralegal is a research tool that answers from real court decisions and shows the citation, so the attorney can verify it in a minute. Cases costs 49 a month, Midpage Professional 100, Paxton 499, and Westlaw Advantage 256.75 to 399.75. A 20 dollar chatbot is cheaper and can hand you a case that does not exist.
This guide is for the attorney or office manager who decides what a paralegal uses, and for the paralegal who has to defend the choice. Paralegal research is a different job from attorney research: it is mostly fast fact-matching, first-pass memos, and pulling cases for someone else to read. That changes which tool earns its fee. Every price below was read on the vendor's own page, with a made-up address on the same site as a control, so a missing price means none is published.
Best AI for paralegals at a glance
| Tool | What a paralegal uses it for | Price | Source |
|---|---|---|---|
| Cases | Plain-English search of US federal and state decisions, with the real citation to hand to the attorney | 49 a month, or 24 billed yearly | Our own published price |
| Midpage Professional | AI case law research with an AI citator | 100 a month | Published by Midpage, read 15 October 2026 |
| Westlaw Advantage | Full Westlaw library with KeyCite and AI-assisted research | 256.75 to 399.75 a month | Published by Thomson Reuters, read 13 October 2026 |
| Paxton | AI research, drafting and document analysis | 499 a month, or 2,999 a year | Published by Paxton, read 29 October 2026 |
| CoCounsel Legal | Westlaw content plus AI drafting and document review | 784 a month, all states plus federal, 1-year term | Published by Thomson Reuters, read 9 October 2026 |
| ChatGPT Plus or Claude Pro | Summaries, cover letters, organizing notes, not citable research | 20 a month | Published by OpenAI and Anthropic |
The pattern is simple. Paralegal seats are a volume purchase, and the difference between 49 and 499 a month is 5,400 dollars a year per seat. The expensive tools earn that when the paralegal also drafts and reviews documents. For pure research support, a case law search plus the citator the firm already owns covers most of the work.
What should AI do for a paralegal, and what should it not do?
Good jobs. Finding decisions with facts like the client's, building a first list of cases for an attorney to read, checking whether a case a client or opposing counsel mentioned is real, and summarizing a long opinion into the holding, the facts and the procedural posture. Each of these ends with a human opening the decision.
Bad jobs. Citing from memory, quoting a passage the paralegal has not opened, or sending a chatbot's list of cases to the attorney as if it were verified. The public database of court decisions dealing with AI-fabricated citations holds 2,241 decisions as of 29 October 2026, and filings prepared with staff help are in that count. A tool that shows the source decision beside every answer protects both the paralegal and the signing attorney. More on that failure is on whether ChatGPT can do legal research.
What does each setup cost per year?
| Setup | 1 paralegal | 3 paralegals | 5 paralegals |
|---|---|---|---|
| Cases (24 a month billed yearly) | 288 | 864 | 1,440 |
| Midpage Professional (100 a month) | 1,200 | 3,600 | 6,000 |
| Westlaw Advantage (256.75 to 399.75 a month) | 3,081 to 4,797 | 9,243 to 14,391 | 15,405 to 23,985 |
| Paxton (2,999 a year) | 2,999 | 8,997 | 14,995 |
These are list prices multiplied out, not quotes. Larger firms negotiate, so use the five-seat column as a ceiling to bargain from. If one tool saves a paralegal two hours a week on first-pass research and the firm bills those hours at even a modest rate, the yearly fee on the cheaper rows is recovered inside a month. The expensive rows need more than research to justify them.
Which tool for which firm
Solo or two-attorney firm with one paralegal. A 49 dollar case law seat on top of whatever citator the attorney already holds. See best legal research for solo practitioners for the full solo comparison.
Plaintiff firm with a paralegal team. Research volume is high and the cases are fact-driven, which suits plain-English search. Seat cost matters because it scales with headcount. The buying logic is laid out on AI for personal injury lawyers.
Litigation boutique or defense firm. Staff draft and cite-check at volume, so a library with a citator is the base, and the AI layer goes on top. See AI for insurance defense attorneys for how those teams compare tools.
Paralegals in transactional teams also spend hours on contract review and tracking. If that is half the job, a contract management platform with AI may earn more of the budget than another research seat.
Where Cases fits, and where it does not
Cases is a plain-English search of US federal and state court decisions that shows the real citation, from 49 dollars a month. A paralegal types the fact pattern as it was told to them and gets decisions to read. It is not a citator, it does not draft pleadings, and it does not review document sets. Run the citation through the firm's citator before anything is filed.
Questions firms ask about AI for paralegals
Can paralegals use AI for legal research?
Yes, as a way to find decisions faster, provided a person opens and reads each one and checks it in a citator. Treat AI output as a lead list. The attorney who signs the filing is responsible for every citation in it.
What is the best AI tool for paralegals?
For research support, a case law search that shows real citations, such as Cases at 49 a month or Midpage at 100. For research plus drafting and document review, Paxton at 499 a month or CoCounsel Legal at 784 are priced for that wider job.
Will AI replace paralegals?
The tools remove first-pass search and summarizing time, not the judgment of what matters to the matter or the checking. Firms that buy them generally redirect paralegal hours to review, client contact and trial preparation.
How much does AI for a law firm paralegal cost?
Published prices read in October 2026: Cases 49 a month, Midpage 100, Westlaw Advantage 256.75 to 399.75, Paxton 499, CoCounsel Legal 784. A general chatbot is 20 but is not grounded in court decisions.
This is informational research, not legal advice. Always open and read every decision before you rely on it, and check it in a citator.
Search case law in plain English
Ask a legal question the way you would say it out loud and get on-point precedents with plain-English summaries, holdings, and citations you can check. Informational research, not legal advice.