Where does a small firm actually bleed hours? Unbilled time that never made it onto a timesheet. The prospective client who called during a hearing, reached voicemail, and retained the firm across town. The lease agreement that took an associate four hours to mark up against the firm's standard positions. The research memo that started from a blank page when three prior matters answered half of it. Every tool on this page is aimed at one of those specific drains — and for each, we tell you whether the price is a number you can budget tonight or a quote you'll have to sit through a demo to hear.
The short version:
- Contract AI splits into published and quote-only. Gavel Exec posts $160/user/mo on its own site. Spellbook, the category's best-known name, publishes nothing — third-party reports span roughly $99 to $400/user/mo, with a significant late-2025 price increase and a six-month minimum reported on enterprise plans.
- Research seats run the widest price range in legal AI. Paxton publishes $499/mo ($2,999/yr) on paxton.ai — beware older articles still citing $49–$199 figures. CoCounsel is by quote (reported roughly $225–$500/user/mo depending on bundle), and Thomson Reuters' one self-serve number is Westlaw Edge AI-Assisted Research from $155.35/mo on a three-year term for firms up to ten attorneys.
- The phones are the cheapest verified win. Smith.ai publishes its rates: the AI Receptionist from $95/mo (about 50 calls), and the human-answered Virtual Receptionist from $292.50/mo for 30 calls — month to month, no long-term contract.
- Practice-management AI rides on the platform you already pay for. Clio's plans are published at $49–$149/user/mo with its Duo AI reported around $49–$59/user/mo on top (some 2026 reporting says it has shifted to quote pricing — confirm at clio.com). MyCase IQ works the same way on MyCase's published $49–$99/user/mo tiers.
- Litigation drafting is its own aisle. Briefpoint drafts discovery requests and responses; it publishes no pricing, and independent reports conflict (figures from ~$89/mo to a $210/mo starting point circulate). Get yours in writing.
- Every one of these tools touches client confidences. Model Rule 1.6 does not care that the vendor is impressive. Read the ethics and confidentiality guide before any client document reaches a third-party model.
Which AI tools do small law firms actually run?
Nine tools across five jobs: drafting and reviewing contracts, researching the law, answering intake, running the practice, and producing discovery. Prices checked 2026-07-18.
Where should the first dollar go?
Aim at the drain, not the demo. Reported figures below are third-party and labeled as such; the full comparison lines every tool up side by side.
| The drain | Category | Entry point |
|---|---|---|
| Prospective clients reaching voicemail; intake nobody returns until 6 p.m. | Smith.ai | AI Receptionist from a published $95/mo; human answering from $292.50/mo |
| Contract markups eating associate afternoons | Gavel Exec, Spellbook | Gavel Exec $160/user/mo published; Spellbook by quote (reported ~$99–$400/user/mo) |
| Research memos starting from zero every time | Paxton, CoCounsel, Westlaw AI | Westlaw AI-AR from $155.35/mo and Paxton $499/mo published; CoCounsel by quote |
| Unbilled hours and admin drag inside the practice platform | Clio Duo, MyCase IQ | Rides on published platform tiers (Clio $49–$149, MyCase $49–$99 per user/mo); AI add-on pricing varies — confirm |
| Discovery responses drafted by hand at scale | Briefpoint | By quote; independent reports conflict — get it in writing |
What can AI honestly take off a lawyer's desk?
First drafts, not judgments. A contract tool marks the indemnity clause that deviates from your playbook; you decide whether the deviation is acceptable. A research assistant assembles the authorities and drafts the memo skeleton; you verify every citation before it goes near a filing — courts have sanctioned lawyers for skipping exactly that step. An intake agent answers at 9 p.m., runs the conflict-screen questions you configured, and books the consult; you still decide whom to represent.
The second honest win is capture. Duo and IQ surface the calls, emails, and document work that never became time entries. For many small firms the recovered billable time funds the subscription several times over — which is a more defensible reason to buy than any demo.
What about confidentiality and the ethics rules?
The longer treatment — including what to ask a vendor about training on your data, retention, and where the model runs — is in the ethics and confidentiality guide. For a rollout order that keeps risk low, start with how to bring AI into a law practice.
Common questions
How much does legal AI software cost in 2026?
The published anchors: Smith.ai's AI Receptionist from $95/mo, Westlaw AI-Assisted Research from $155.35/mo (three-year term, firms up to ten attorneys), Gavel Exec at $160/user/mo, and Paxton at $499/mo. Clio and MyCase publish their platform tiers ($49–$149 and $49–$99 per user/mo) with AI add-ons priced separately. Spellbook, CoCounsel, and Briefpoint are quote-only, with third-party reports ranging from roughly $99 to $500 per user per month depending on the tool and bundle.
What is the cheapest way for a solo attorney to start with AI?
The lowest published entry on this page is Smith.ai's AI Receptionist at $95/mo, which fixes missed intake — usually the most expensive leak a solo has. If drafting is the bigger drain, Gavel Exec's published $160/user/mo undercuts the reported pricing of most contract-AI rivals.
Can I put client documents into these tools?
Only after you have read the vendor's data-handling and training terms, confirmed how long client material is retained, and checked your state bar's AI guidance. ABA Formal Opinion 512 treats this as part of the duty of competence. When in doubt, ask the vendor in writing whether your inputs are used to train models, and get client consent where your jurisdiction expects it.
Do these tools replace legal research databases?
No. Paxton and CoCounsel draft and summarize against real authorities, and Westlaw's AI tier sits directly on the Westlaw database, but none of them removes the lawyer's duty to read the cases and verify every citation before filing. Treat AI research output as a first-year associate's draft: useful, fast, and unsigned until you check it.