CoCounsel vs Harvey for Small Law Firms: CoCounsel Pricing, Harvey AI Pricing and Which One a Small Firm Can Buy

Short answer. CoCounsel is buyable by a small law firm and Harvey, in practice, is not. Thomson Reuters sells CoCounsel per user with a 30-day trial, and reported figures run from about $104 to $784 a user per month depending on how much Westlaw content rides along. Harvey is an enterprise contract sold through a scoping call, with a seat minimum most sources put near 20 and entry contracts reported from $50,000 to well over $300,000 a year. The more interesting finding is that the reported Harvey numbers disagree with each other by more than six times, and the two figures closest to Harvey itself are the lowest ones in circulation.

Neither vendor publishes a rate card, so everything below is labeled with who reported it and when. If you are running this comparison for a firm of two to twenty lawyers, the seat minimum decides it long before the seat price does.

CoCounsel vs Harvey at a glance

The Harvey price nobody agrees on

Run this comparison across the pages that currently rank for it and you get a range so wide it stops being useful. That is worth laying out explicitly, because the number you carry into a partners' meeting depends entirely on which article you happened to read first.

Two things follow from that table. First, seat price scales inversely with firm size here, which is the opposite of what a small firm hopes: the cheap per-seat numbers belong to firms buying hundreds of seats. Second, the sources sitting closest to Harvey, its own ROI calculator and the indicative 10-user figure, land three to five times below the blogger consensus. We do not know which is right. We do know that quoting $1,200 a seat as though it were a fact is not supportable, and neither is quoting $300.

Which is cheaper, CoCounsel or Harvey?

CoCounsel, for any firm small enough to be asking. Even at the high end of its reported range, around $639 a user per month for a solo on a Westlaw Advantage bundle, one CoCounsel seat costs less in a year than the reported Harvey minimum costs in a month. CoCounsel also has no reported seat minimum, so one lawyer can buy one seat. Harvey's reported floor of roughly 20 seats means a six-lawyer firm is quoted for fourteen people it does not employ.

The honest caveat is that this compares list-ish estimates to list-ish estimates. Enterprise quotes move a long way under negotiation, and a firm with real leverage, a multi-year term or a large headcount will not pay anything close to the reported entry numbers. None of that helps a firm of six.

Is Harvey better than CoCounsel?

They are built for different jobs, so better depends on what you are buying. CoCounsel's advantage is content: it sits on Westlaw and Practical Law, so research and citation checking are grounded in primary law a publisher maintains. Harvey's advantage is breadth and agents: multi-step workflows across diligence, compliance and litigation that run further without a human in the loop, which is why large firms with dedicated innovation teams buy it.

For a small firm, that framing usually resolves itself. If your practice is litigation and you already pay for Westlaw, the AI layer on top is reported at roughly $100 to $200 a seat per month and is the cheapest capability you will add all year. If your practice is transactional and your real problem is reading documents rather than researching law, neither platform is aimed at you, and both will be sold to you as though they were.

Can a small law firm buy Harvey?

Sometimes, but rarely on sensible terms. The reported minimum sits near 20 seats, some buyers report no minimum was applied, and entry contracts are reported from $50,000 a year. A four-lawyer firm that gets past the qualification call is usually being sold a pilot, and the pilot is part of the sales process rather than a trial you can walk away from having learned the price. We keep a full breakdown of the reported figures and their sources on our Harvey AI pricing page for small law firms, and the options firms actually choose instead on our Harvey AI alternative page.

What does CoCounsel cost per user?

Thomson Reuters does not publish a figure. Its plans page lists CoCounsel Essentials, Westlaw Advantage with CoCounsel Essentials, Practical Law Dynamic Tool Set with CoCounsel Essentials and CoCounsel Legal, with no price on any of them, and routes firms over ten attorneys to a salesperson. Reported figures span $104 to $784 a user per month, and a June 2026 benchmark put a solo on a one-year Westlaw Advantage with CoCounsel Essentials term near $639. The spread is mostly Westlaw content, not AI: the incremental AI layer is reported at roughly $100 to $200 a seat per month. Our CoCounsel pricing page breaks each figure down with its source.

Does either one do document review?

Both will review a document, and neither is priced as a document review tool. This is the mismatch that costs small firms the most money, because the demo always includes a contract analysis and it always looks good.

Think about what your week actually contains. If it is researching points of law and checking citations, CoCounsel earns its money. If it is diligence across a pile of agreements, that is a volume problem and a specialist tool beats a research platform: reviewing a stack of commercial leases, for instance, is closer to pulling the key terms out of each lease into a structured abstract than to legal research, and the dedicated tools for it cost a fraction of a research seat. And if it is reading contracts, briefs and exhibits carefully for issues, risky clauses and missing terms, that is document review, and you can buy it for $99 a month with the price printed on the page.

What accuracy should you expect from either?

Less than the marketing implies, and you are responsible either way. The Stanford RegLab study measured Westlaw AI-Assisted Research at 42 percent accurate with 33 percent hallucinated content, and Lexis+ AI at 65 percent accurate with 17 percent hallucinated. Both products have moved on since, and CoCounsel Legal shipped on a newer model stack in August 2026, but no vendor has published an independent replication showing the problem solved. In Lacey v. State Farm in 2025, a court imposed $31,100 in sanctions over AI-fabricated citations. Every output from either platform still needs a lawyer to check it, which is worth pricing into the ROI case somebody will inevitably build.

Questions to ask both vendors before you sign

• What is the minimum number of seats you will write a contract for, and what happens to the per-seat price at that minimum?
• What is the price of the AI layer alone, quoted separately from the research content?
• What is the shortest term available, and what does 12 months cost against 36?
• Is the trial a real trial I can end, or a pilot that is part of the sales process?
• Can I see the SOC 2 report and the subprocessor list before signing rather than after?
• What happens to my uploaded documents at the end of the trial, and is that in writing?
• What does renewal look like in year two, in writing, before I sign year one?

The verdict for a firm under twenty lawyers

Buy CoCounsel if your practice is research-led and you already live in the Thomson Reuters world, because the AI layer on a subscription you are already paying for is the cheapest meaningful upgrade available to you. Do not spend a quarter chasing Harvey unless you have twenty lawyers who will use it daily and a budget that treats $50,000 a year as a line item rather than a decision.

And check whether you are solving the right problem first. A large share of firms that start a Harvey or CoCounsel evaluation are trying to fix document reading, not legal research, and that is a much cheaper problem. Upload one contract, lease, brief or exhibit at the top of this page and read what comes back before you book a single demo. Plans are listed on our AI legal software pricing page, and if you are also weighing contract intelligence platforms, our Luminance legal AI pricing page covers the other end of that market.