Legal research, priced.
Fourteen platforms in one table. Published rates are marked published. Estimates are marked estimates. Every figure carries a source and the date it was read.
Only a minority of this category posts a number you can read without a sales call, and that fact is the most useful thing on this page.
All figures read and verified 2026-08-24
The table
Sorted by what a small firm would actually pay per seat per month. Where a vendor publishes nothing, the row says so rather than guessing.
| Platform | Per seat per month | Published? | Source and notes |
|---|---|---|---|
| Bar association Fastcase or vLex | $0 | Published | Included with membership at 40+ state bars. Excludes advanced AI features and sometimes the full citator.Casefleet, June 6 2026 |
| CourtListener, Google Scholar | $0 | Free | Broad case law coverage. No editorial citator, so verification time moves to the attorney. |
| Clio Duo add-on | $49 to $59 | Reported | On top of base Clio pricing. Practice management, not research.thelegalprompts.com, February 25 2026 |
| vLex research subscription | from ~$65 | Reported | Entry point for a paid research tier.Casefleet, June 6 2026 |
| Marcella BOYA 20 | $1,498 flat / 20 seats | Published | $1,498 per month flat for 20 seats, in the firm's own Azure tenant. Launch pricing. |
| Marcella Firm | $99 | Published | 1 to 25 seats, annual billing, Technology Outlaws hosted. Launch pricing. |
| Westlaw Edge, single circuit | $107.25 | Published | Three year term, firms up to 10 attorneys.Thomson Reuters via Spellbook, 2026 |
| LexisNexis solo entry | $114 | Reported | Limited jurisdiction scope.thelawgpt.com, June 2026 |
| Westlaw Classic, one state | $133 | Reported | One year commit.Lawyerist, December 2024 |
| Westlaw Edge with AI, single circuit | $155.35 | Published | Three year term. $266.50 for all states plus federal.Thomson Reuters, June 2026 |
| Vincent bundled in Clio Work | ~$199 | Reported | Requires the Clio platform underneath.Casefleet, June 6 2026 |
| Westlaw Advantage, single circuit | $256.75 | Published | Current flagship. $399.75 for all states plus federal.Thomson Reuters, June 2026 |
| CoCounsel Legal | $150 to $500 | Estimate | Bundled with Westlaw, or as an AI add-on to an existing subscription. Thomson Reuters publishes no CoCounsel rate.thelegalprompts.com Feb 2026; Elephas Mar 2026 |
| Paxton AI Individual | $499 | Published | Or $2,999 per user per year. Seven day free trial. Older listings report $199 to $299.Lawyerist, June 8 2026; Vaquill, July 3 2026 |
| GC AI Individual | $500 | Published | Vendor pricing page.Vaquill benchmark citing gc.ai/pricing, June 2026 |
| Legora | ~$250 | Estimate | Reported near $3,000 per user per year with a ten seat minimum, so a floor near $30,000 annually.Casefleet, June 6 2026 |
| Harvey, mid-market | $1,200 to $2,000+ | Estimate | No published rate. Am Law volume pricing reported far lower at $100 to $200.Vaquill, July 3 2026 |
| Callidus | Not published | Quote only | Directs buyers to a pricing page or sales team. Its own materials claim a rate below Paxton without naming one. |
Read the Published column before the price column. A published rate is a commitment a vendor made in public. An estimate is somebody reporting what one firm was quoted once. Comparing the two as if they carry equal weight is how a budget gets set wrong.
The transparency split
A July 2026 survey of twenty legal AI vendors found six that publish a readable price and fourteen that route to a sales call. A separate June 2026 benchmark of the ten platforms in-house teams most often shortlist found only three publish a real per-seat rate.
Published rates in the category span from zero for free and bar-benefit tiers to roughly $2,999 per user per year at the top of the published range, with quote-only enterprise platforms reported considerably higher. That is not a range. That is the absence of a market price.
The reason is structural rather than sinister. A posted price lets a buyer compare and walk away. A quote establishes the buyer's firm size and budget before the seller names a figure. Both parties know this, which is why the demo call opens with questions about headcount.
What none of these numbers include
Out of plan charges
Content outside your selected plan is billed per transaction. The Franklin County Law Library published roughly ninety nine dollars per Westlaw search and roughly sixty dollars per Lexis search for out of plan use, updated June 16, 2026.
Term structure
Reported Thomson Reuters term discounts are twelve percent at two years and eighteen percent at three, which means a published AI-tier rate already assumes a three year signature. A one year commitment on the same tier costs more per month than the advertised figure.
Model spend
Agentic workflows consume tokens per run rather than per seat. On most architectures long-horizon document work is metered separately from the license.
Data processor review
A new AI vendor in the data path is a new processor. Approval runs 3 to 6 months at a mid-size firm and the hours are partner and general counsel hours.
Custody of the record
Prompts and outputs are electronically stored information. If a third party holds them, the firm is not the custodian of its own work product. There is no line item for this until it lands. Full explanation.
How to use this table
Start at the top. If your state bar includes a Fastcase or vLex tier, that is real case law coverage at zero cost and more than 40 bars provide it. Confirm what your package includes before paying anyone.
Then buy only what the free tier does not cover, which for most firms is the editorial citator and the document workflow. That is a narrower purchase than a full platform and it is priced accordingly.
Above that, the decision stops being about price. A litigation team that runs KeyCite or Shepard's daily should keep the incumbent, and the Westlaw comparison says so plainly. A firm doing high diligence volume should look at the enterprise platforms. A firm of two to twenty five attorneys already standardized on Microsoft 365 has a different answer again.
Questions
How much does legal research software cost in 2026?
Published rates span from zero for free and bar-benefit tiers to roughly $2,999 per user per year at the top of the published range, with quote-only enterprise platforms reported considerably higher. Westlaw publishes self-serve rates from $107.25 per month for firms up to ten attorneys. LexisNexis publishes nothing.
Which legal AI vendors publish their prices?
A July 2026 survey of twenty vendors found six that publish a readable price. Thomson Reuters publishes self-serve Westlaw rates for firms up to ten attorneys, Paxton publishes $499 per user per month, GC AI publishes $500 per seat per month, and Marcella publishes every tier. Harvey, LexisNexis, CoCounsel, Legora, and Callidus are quote-only.
What is the cheapest legal research option?
Free. More than 40 state bar associations include a Fastcase or vLex tier with membership, and CourtListener and Google Scholar carry broad case law coverage at no cost. None includes a full editorial citator, so verification time moves from the invoice to the timesheet.
Why is Harvey AI so much more expensive?
Harvey is built for Am Law firms with a research department and a procurement function, and it is priced to that market. Reported mid-market figures run $1,200 to $2,000 or more per user per month, while Am Law volume pricing is reported far lower at $100 to $200 per seat. A small firm is quoted the top of that range, not the bottom.
What costs are missing from a legal research quote?
Five: out of plan search and document charges, the term structure behind a discounted headline rate, per-run model spend on agentic workflows, the 3 to 6 month data processor review a new AI vendor triggers, and custody of your prompts and outputs when a third party holds them.
Marcella publishes every rate through BOYA 20. Launch pricing, and rates increase after the launch period.
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