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Last reviewed: July 2026 · prices in USD · national baseline for law firms
Legal has the most expensive clicks in advertising — injury and family-law keywords routinely run $100-$300 apiece — and in 2026 a growing share of those clicks never happen, because the person asks ChatGPT or an AI Overview whether they have a case and gets an answer with three firm names in it. Referrals still matter, directories less every year. The firms winning now are the ones who answer legal questions in public, respond to intake in minutes instead of days, and stop paying for aged leads shared with four competitors.
For a law firm, an AI agent functions as an intake department that never closes. It picks up the 11 p.m. Call after the crash, asks the qualifying questions — when it happened, injuries, insurance, whether anyone else has been retained — screens out the cases you don't take, and books the consultation before the caller keeps dialing down the list. Run the same discipline on web forms, and you're following up in seconds instead of the next morning. Firms measure the difference in signed cases per hundred leads, and speed-to-contact is the single biggest lever on that number.
| Tier | Typical range | What it covers |
|---|---|---|
| DIY platform (self-serve) | $100–$500/mo | No-code agent builders you configure and maintain yourself |
| Managed SMB agent | $300–$2,500/mo | Set up, trained on your business, and maintained for you |
| Mid-market | $2,500–$12,000/mo | Multiple channels (voice, chat, video), CRM integration, SLAs |
| Enterprise | $15,000–$50,000/mo | Custom orchestration, compliance, dedicated team |
| Custom build (one-time) | $15,000–$100,000 one-time | Ground-up agent development for unusual requirements |
Law firms are the heaviest marketing spenders in local services — consumer firms commonly run 5-15% of revenue, and PI firms far more during growth pushes. The managing partner signs off, and everything gets compared to cost-per-signed-case, which in injury work can run into the thousands and still make money. That's the frame to use: not what the retainer costs, but what a signed case costs through this channel versus paying $150 a click for the same person.
Injury and criminal inquiries run year-round with summer accident spikes; family law surges in January after the holidays; tax and estate work follows filing deadlines.
Can AI legally handle intake for a law firm without practicing law?
Yes, when it's scoped like a good non-attorney intake coordinator: gathering facts, screening against your criteria, scheduling — not giving legal advice. The agent should be explicit that it isn't a lawyer and hand anything advisory to a human. Bar rules vary by state on solicitation and confidentiality, so have your ethics counsel review the scripts once, the same way you'd review a human intake script.
We already spend heavily on PPC — why add this?
Because the clicks you're buying are shrinking. AI Overviews and chat assistants now answer many legal questions before a click happens. Firms named in those answers get the case without paying $150-$300 for the visit. Most firms don't cut PPC on day one; they build the answer-engine presence alongside it, then rebalance when the numbers show where signed cases come from.
What should a firm expect to pay, and what's the catch?
Managed programs mostly land between $300 and $2,500 a month depending on practice area and market — injury in a major metro is the deep end. The downside is patience and attribution. Legal is the most competitive category there is, so demand a report that ties spend to consultations and signed cases, and expect a quarter before the trend is readable.
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Methodology: ranges are synthesized from published 2026 market pricing across vendors, agencies, and platforms, reviewed and refreshed monthly (last refresh: July 2026). Metro figures apply a cost-of-doing-business index (built from 2026 local cost-of-living and labor data) that we scale per price tier: self-serve tools are priced nationally and barely move between cities, while managed and enterprise work — which is delivered by local labor — carries the full local premium. That is why the same city shifts a done-for-you retainer far more than a DIY subscription. Prices are in USD and describe typical market rates, not quotes; a real quote for your business takes minutes through a verified provider on the hashtag.org network.