Review Startup Contracts Over Slack for $500 Each: The New Law Firm Model

General Legal, a Y Combinator W26 startup, lists a $500 flat fee for a standard contract review (contracts of 3 to 25 pages, as of 15 October 2026). The firm says it reached $2 million in annualized revenue, according to co-founder JP Mohler in July 2026. The model works because AI does the first pass and a licensed attorney signs off, so this is a business for lawyers, not for anyone with a Slack account.

What is the AI-native law firm opportunity?

An AI-native law firm sells legal work at a fixed price, built around AI doing the first draft of the review, with a barred attorney applying judgment on top. The buyers are fast-growing companies that sign many vendor and customer contracts and cannot wait days or pay hourly rates.

The pain is concrete. Crosby CEO Ryan Daniels was the only legal person at a company that grew from about 10 to 100 people, and he said contracts were the reason the company was not growing as fast as it wanted. Crosby's pitch is review in under an hour, a claim the company makes itself.

The category is small. General Legal's own comparison says the AI Firm Index tracks just over 50 AI-native law firms globally, 31 of them in the US as of late June 2026. That is a vendor-written count, but it shows how early this is.

Clients work with these firms differently, too. General Legal says its lawyers work inside a client's Slack, and that it does not bill by the hour and has no minimums.

How much can an AI-native contract review firm make?

Example estimate: a solo lawyer doing 20 reviews a month at $500 collects $10,000 and keeps about $8,500 before their own pay. That holds only if AI really cuts review time. If it does not, the same model can lose money.

The key input is attorney time. Mohler told Artificial Lawyer that a mid-size or big firm lawyer takes 8 to 10 hours on an average MSA, while General Legal's attorneys do it in about 2.2 hours, including negotiation turns. He also said margins run 40 or 50% per contract. These are company-reported figures, built on a proprietary AI stack a new entrant will not have on day one.

The table runs three sizes. Assumptions (all example estimates, not sourced): every review is a $500 standard review, hired attorneys cost $100 an hour, and monthly overhead (insurance, software, bar dues, marketing) is $1,500 for the solo, $4,000 for the medium firm and $15,000 for the large one. The solo owner is the lawyer, so owner pay is the profit.

The medium and large rows land near the 40% margin General Legal reports. That follows from the assumptions chosen here, so it does not verify the company's claim. The 5-hour column is the stress test: once review time rises, hired attorneys at $100 an hour erase the margin.

The headline price is also not the whole story. As of 15 October 2026, General Legal's $500 tier includes one round of internal revisions, and unlimited negotiation turns plus counterparty call support cost $1,000. The same page lists $250 for contracts of 3 pages or fewer. Artificial Lawyer's March 2026 coverage quoted a flat $500 that carried a contract through every turn, so the firm's packaging has changed since launch.

Which companies are already doing this?

Six companies show the range, from a $15,000 bootstrap to rounds of $60 million and more. All figures are company-reported unless noted.

General Legal. Founded 7 January 2026, per Mohler, it had about 110 to 115 clients and $1 million annualized revenue by late March. By July Bloomberg Law reported 14 full-time lawyers, almost entirely Big Law alumni, all with equity. Mohler's stated goal is to build the biggest law firm in the world within ten years. That is an ambition, not a result.

Crosby. Its Series B was co-led by Lux Capital and Index Ventures, with Sequoia, 01 Advisors, Bain Capital Ventures and Elad Gil. The Global Legal Post reports the firm says its negotiated contracts reached just over $1bn, up from $30M at launch. Clients include Ramp, Clay and Rogo. According to TheVCNotebook, a salesperson typically drops the contract into Slack and tags Crosby.

Soxton. It launched with $2.5M and a stated aim of a lawyer response within four hours. Bloomberg Law reported prices of $100 to $200 per contract and about 40 contract attorneys alongside two engineers.

Talairis. Founders Sam Shaddox and Matt Souza, both formerly of Perkins Coie, started with $15,000 of their own money and turned down outside investment. Shaddox says its work typically costs 10% to 15% of what a comparable big firm would charge, and describes the firm as built on the traditional model with AI added on top.

Eudia Counsel and Lawhive. Eudia's $105 million round was led by General Catalyst, and its law firm focuses on M&A and contracting for large clients. Lawhive operates in 35 US states with roughly $35 million in annual revenue and about 750 lawyers across the UK and US, per Fortune as relayed by Nonbillable. Neither competes directly for startup contract work.

What did they do with millions, and what can you do with $5k to $50k?

The funded firms spent on engineers, proprietary AI and large lawyer teams. With $5,000 to $50,000, the Talairis route is the closest match: experienced lawyers, existing startup relationships, commercial AI models and a narrow menu. Bloomberg Law reports Talairis runs on large language models from Anthropic, OpenAI and Google, which its founders treat as interchangeable.

Do you need a licence to run an AI-native law firm?

Yes: the legal work must be done or signed off by a licensed attorney, and outside Arizona's program and Utah's pilot you should plan on lawyer ownership. General Legal says it hires only US-barred attorneys and that a human attorney reviews every agreement.

Arizona is the exception. Its program lets nonlawyers hold an economic interest or decision-making authority in a firm, and 151 ABS firms were licensed as of 27 January 2026. An ABS must be approved and monitored by the ABS Committee, and must disclose anyone with more than a 10% ownership interest or decision-making authority. Eudia says Arizona is the only state with permanent changes to ownership rules, and that Utah used pilot programs.

On consumer harm, IAALS reported Utah's Sandbox had 1 complaint per 4,011 services as of January 2024, and found no evidence of increased consumer harm. IAALS notes it cannot compare that directly with traditional firms.

Check your state bar's rules on fees, advertising, confidentiality and AI use before you price anything. An ethics lawyer should review any structure that lets nonlawyers invest.

How much does it cost to start?

There is no sourced startup budget for these firms, so treat the table as a checklist with sourced anchors only.

How do you start an AI-native law firm, step by step?

Start narrow: one contract type, one customer segment, a published price. These steps follow what the funded firms did, scaled down.

1. Confirm who holds the licence. You need to be a barred attorney or partner with one. Check your state bar's rules on firm ownership, fee agreements and AI use.
2. Pick a wedge. General Legal and Crosby both focus on NDAs, MSAs and DPAs. Choose one for one buyer type, such as SaaS startups.
3. Publish a price menu. Use General Legal's structure as a benchmark: tiers by page count, with negotiation priced separately. Do not copy its prices without measuring your own time per contract.
4. Set up the entity and insurance. Get malpractice coverage, an engagement letter and confidentiality terms before the first client.
5. Write your playbooks. General Legal lists playbook development at $1,500 as of 15 October 2026. Draft your own fallback positions for each contract type.
6. Open a shared Slack channel per client. General Legal says its lawyers work in the client's Slack. Agree a turnaround target in writing.
7. Build the AI first pass. Mohler says the first set of eyes on a document is AI, with a lawyer applying judgment. Keep a lawyer reviewing every document.
8. Pilot with a handful of founders. Crosby's first clients were fast-growing startups such as Cursor, Clay and UnifyGTM, and General Legal says it served peers from its Y Combinator cohort.
9. Track time and margin per contract. According to TheVCNotebook, Crosby tracks Total Turnaround Time and Human Review Time. Copy both.
10. Hire only after the numbers hold. Soxton used about 40 contract attorneys, per Bloomberg Law. General Legal gives full-time lawyers equity.

How can you use AI in an AI-native law firm?

AI does the first markup, routing and client-context analysis, and the lawyer exercises judgment. Mohler describes AI routing each document to a lawyer by specialization, analysing client messages, and preparing the first set of notes.

Bloomberg Law reported that General Legal's lawyers almost all use Claude Code day to day, and that Talairis built more than 100 proprietary AI agents on top of commercial models. Check each vendor's current plans before budgeting.

Other professions follow the same pattern: an AI-native tax firm, buying a retiring CPA's firm and selling AI to accountants.

What are the risks?

The main risks are thin margins if AI does not cut review time, errors that pass attorney review, and limits on who can own the firm. The table above shows the first: at 5 hours per review, hired attorneys at $100 an hour erase the margin.

• Unproven economics. The 40% to 50% margin and 2.2-hour figures are company-reported. Peter Salib of the University of Houston Law Center told Bloomberg Law he is skeptical if "AI native" means buying proprietary models and fine-tuning them.
• The hard parts are not technical. Northwestern's Daniel Linna told Bloomberg Law that technology is not the hardest part: firms must hire lawyers who embrace the model and win clients.
• Hallucinations. SiliconANGLE notes headlines about lawyers in trouble after AI models hallucinated case law or misstated details.
• Small scale. General Legal's $2 million annualized revenue is less than one-fifth of what the average Kirkland & Ellis partner earns in annual profits, Bloomberg Law reports.
• No track record. With about 50 AI-native firms tracked globally, there is no base rate for how many survive.

What's still unclear?

• Real prices. General Legal's $500 tier is review only, while Artificial Lawyer's March 2026 coverage described $500 as covering every turn. Crosby's pricing is not confirmed here, so check its own site.
• Margins at your scale. No independent source has verified the 40% to 50% margin or the 2.2-hour turnaround.
• State rules. This article does not cover each state's rules on nonlawyer ownership, fee sharing or AI supervision. Arizona and Utah are the documented exceptions.
• Revenue mix. General Legal's $2 million annualized figure does not say how many contracts that represents or how much comes from each price tier.
• Durability. Whether startups keep paying for flat-fee review once big firms and legal AI vendors copy the model is an open question.

This is research, not legal, tax or financial advice. Example estimates are illustrations, not income promises.