# What an AI Agent Costs to Build and Run > The model's fees are the line everyone asks about, and the smallest one. What sets the monthly bill is the minutes a person spends checking each case. By Vlad Shvets, Partner @ Qvery · Published 2026-11-04 · Updated 2026-11-09 · 8 min read Canonical: https://qvery.ai/blog/ai-agent-cost/ At a law firm, every incoming contract gets a first read before anyone advises on it: a lawyer checks its clauses against the firm's checklist and marks what needs a closer look. Say that read takes an hour (our assumption) and the firm takes in about 60 contracts a month, shared by two lawyers. That is a sixth of their week, close to **$78,000** a year at what a lawyer costs with benefits, spent on reading before any advice is given. > ⚖️ At Qvery, we help law firms spend less lawyer time on first-pass contract review and put it on the advice clients pay for, with custom AI agents that read each contract against your checklist, draft the memo with the clause behind every finding and file it for a lawyer to check. ## The Lawyer's Quarter Hour Is the Real Cost The AI model those agents run on is the smallest line in their bill: **about 57 cents** to read a 30-page contract against the checklist and draft the first-pass memo, the note that lists what the lawyer must look at. Lawyers in the US earned a median $159,670 in May 2025, the Bureau of Labor Statistics reports. In private industry, wages were 70.0% of what an hour of work cost an employer in June 2026, benefits the rest, so a lawyer costs a firm about $228,100 a year. With benefits, a lawyer's minute costs **about $1.83**, more than the AI model's whole bill for the contract. Say the lawyer spends 15 minutes checking each memo against its contract (our assumption). That is **$27.42 a contract**, **48 times** the model. The same rule decides how we build them: an agent that marks the clause behind every finding is quicker to check than one that hands over a summary, because [checking costs whatever the reviewer has to redo](https://qvery.ai/blog/ai-verification-tax/). Put your own firm's numbers in to see what the first read costs you a year and what the agents hand back. The calculator opens on the example: two lawyers giving 17% of their week to the first read, with the agents taking 75% of it, everything but the lawyer's 15-minute check. (An interactive calculator on the page: roi-contract-first-pass-review.) On the example, the first read falls from $77,554 to $25,089 a year, the agents' running cost included: **$52,466** a year and 530 hours your lawyers spend on advice instead. Every $10,000 of the build is earned back in about **2.3 months**, once those hours go to advice clients pay for. That running cost, about $475 a month, is an estimate: the AI model's fees of about $34 a month, four hours a month of a paralegal keeping the agents current, and a few hundred dollars of hosting and monitoring. Divide by contracts finished and accepted, not contracts started: a contract the agents give up on still costs a lawyer what it cost before, plus their attempt. **Tips** > The outputs were all usable for a first-pass legal review. > ([r/legaltech · Jun 2026](https://www.reddit.com/r/legaltech/comments/1ubpalc/cost_of_legal_ai_contract_review/)) > what works really well is a 2 or 3 tier approach where LLMs / ML do a first tier and a human "cleans up" afterwards. > ([r/consulting · May 2026](https://www.reddit.com/r/consulting/comments/1tdttfc/has_anyone_here_seen_an_ai_engagement_come_in/olz36uc/)) ## What Our Agents Do With Your Contracts The agents we build for your contract review start from the contracts your lawyers finished last month: we learn how your firm reads them and write the scope with you: the systems, the documents, the special cases and the checks they must pass. The price is fixed and agreed before any work starts. We connect the agents to the email and document systems your lawyers already work in, reach a first working result within two weeks of access, and train the lawyer who checks their memos. From then on they read every incoming contract on autopilot, and file each memo beside its contract, while your lawyers handle what they flag. Each week we report two numbers for them: the hours they save, after the minutes your lawyers spend checking their work, and the errors they avoid. A rise in checking time is visible the week it happens, not months later in your payroll. Before the agents read a single contract, we agree in writing what they may read and do, and where their data is processed. Qvery signs a data processing agreement, every action the agents take is logged, and two limits hold from the first day: **What the agents may do with your contracts** | They may | They never | |---|---| | Read the contracts and the checklist agreed in writing | Release a memo before a lawyer has checked it, in the first weeks | | Draft each memo, with the clause behind every finding | Take a step on their own that your firm has not signed off | ## What We Need From Your Last Month of Contracts Start from a month of the contracts your firm took in and the checklist they were read against. Once we have agreed in writing what the agents may read and do, the first memos reach your lawyers within two weeks of access. Have Qvery Build Your Contract-Review Agents: https://calendly.com/qvery-vlad/30min ## Frequently asked questions ### Should we compare an agent's cost with a salary? Compare it per case. A salary buys hours that stay paid whether or not the agent saves any, so the useful comparison is what one case costs your team today against what it costs with the agent, checking included. The freed hours only become money once someone decides where they go. ### Who keeps an AI agent working after launch? Someone on your team who knows the work, for a few hours a month: reading what the agent flags, adding new kinds of cases, and rerunning the test on finished work when formats or the model change. Whoever builds the agent should handle the model moves and fixes, and the quote should say which of these it includes. ### Can we start small to keep the cost down? Yes, and it is the cheapest way to learn the real numbers. Start with one job that has a clear right answer in last month's files, one or two systems, and a person checking every case at first. The checking minutes will tell you within weeks whether to widen the agent, fix it or stop. ### Is paying per seat or per case better for an AI agent? Per case is easier to check against the work, because the bill moves with the cases the agent finishes. A seat price stays flat whether it handles ten cases or a thousand. However a vendor bills, convert it to a cost per case finished and accepted before you compare it with anything else. ### How much does an AI model cost to review a contract? About 57 cents to read a 30-page contract against a firm's checklist and draft the first-pass memo, in this post's example. It is the smallest line in the agents' bill. ### What is the biggest cost of running an AI agent? The person checking its work. At about $1.83 a minute for a lawyer with benefits, a 15-minute check of each memo costs $27.42 a contract, 48 times the model's fee. ### What does it cost to run AI contract review agents each month? About $475 a month in this post's estimate: roughly $34 of model fees, four hours a month of a paralegal keeping the agents current, and a few hundred dollars of hosting and monitoring. ### How much can AI agents save a law firm on first-pass contract review? In the example, two lawyers reading about 60 contracts a month spend $77,554 a year on the first read. With agents taking 75% of it, that falls to $25,089: $52,466 a year and 530 hours back for advice. ### How fast does an AI contract review build pay back? On the example, every $10,000 of build is earned back in about 2.3 months, once the hours the lawyers get back go to advice clients pay for. Hours that go nowhere repay nothing. ### What does a lawyer cost a firm per year with benefits? About $228,100. Lawyers in the US earned a median $159,670 in May 2025, and wages were 70.0% of what an hour of work cost private employers in June 2026, benefits the rest. ### What data permissions do AI contract review agents need? Agree in writing what the agents may read and do before they read any contracts. The agreement also states where data is processed. Qvery signs a data processing agreement, and the agents read the contracts and checklist agreed in writing. ### Why should an AI memo cite the clause behind each finding? Clause references make the agents’ memos quicker to check than summaries. Checking costs depend on what the reviewer must redo. The agents mark the clause behind every finding so lawyers can check the memo against its contract. ### Can AI contract memos go to a client without a lawyer's check? In the first weeks, the agents never release a memo before a lawyer has checked it. They never take a step on their own that the firm has not signed off. Every action they take is logged. ### How do you see if AI agent costs are creeping up? Watch the weekly report of hours saved after checking time, and errors avoided. A rise in the minutes lawyers spend checking memos shows the week it happens, not months later in payroll. ### How much lawyer time does a first contract read take? In this post's example, an hour a contract, about 60 contracts a month shared by two lawyers. That is a sixth of their week, close to $78,000 a year at what a lawyer costs with benefits, spent before any advice is given. ### What do AI agents need to start on a firm's contracts? A month of the contracts your firm took in and the checklist they were read against. The scope, the systems, the special cases and the checks are written down with you, and the first memos reach your lawyers within two weeks of access. ### Do lawyers find AI first-pass contract reviews usable? One r/legaltech comment from June 2026 says all outputs were usable for first-pass legal review. A separate r/consulting comment from May 2026 describes a 2 or 3 tier approach. AI handles the first tier, and a human cleans up afterward.