Clio Report Finds AI Boosts Billable Hours, Not Kills Them

Average law firm utilization will reach 42.2% in 2026, up from 39.1% in 2025, according to Clio's 2026 Legal Trends Report — and, if the projection holds, the 3.1-point jump will be the largest single-year increase in the report's decade-long history. The finding complicates the widely held view, argued repeatedly by Above the Law columnist Stephen Embry, that AI represents a loss on investment for hourly firms: machines doing work associates once billed means fewer hours and less revenue.

Not so fast, Embry now concedes. The numbers point the other way. But only partly.

What does the data actually show?

Clio compared firms that adopted its AI tools against matched non-adopting peers, tracking each against its own pre-adoption performance. The adopters recorded approximately 8% more revenue per responsible lawyer — roughly $1,772 a month, or over $21,000 a year per lawyer. Their utilization ran 1.2 points higher. Their collection rates ran 2 points higher. Firms using AI on both legal work and business operations did better still: 10% more revenue and 6.5% more billable hours.

Clio calls this the "AI paradox": individual tasks get faster, yet firms record more billable time overall.

Why did the hours go up?

Josh Lenon, Clio's lawyer in residence, offered three explanations at ClioCon26 — and they do not all point in the same direction.

• Backlog reduction. Firms are not taking new matters or billing existing clients more, Lenon said; they are reaching work they previously would have deferred. AI adopters recorded billable work across 6% more of their hourly caseload each month, and new matters were about 5 points more likely to see first billable work within 14 days.
• Administrative relief. The largest utilization gains went to solos using both legal-work and practice-management AI: 9% above comparable non-adopters. The most-used AI feature is expense entry — photograph a receipt and the software does the rest. Half of nonlawyers use it, as do 34% of lawyers.
• Better timekeeping. Clio acknowledges some of the gain reflects work lawyers already performed but now record consistently, because work and timekeeping sit in the same system. Time leakage is being plugged.

Each explanation carries a catch. Backlogs eventually clear. There are only so many chores. And captured-but-previously-unrecorded time is a one-time gain, not productivity. Lenon also noted that much of this year's increase predates the full deployment of Clio's main substantive AI tool, and that Clio holds only about a year of data — not yet statistically significant enough to show, for example, whether drafting time per matter has fallen.

How rigorous is the analysis?

The report draws on operating data from tens of thousands of firms, not a mere survey. Yet Clio candidly admits its limits:

• It measures its own customers using its own products.
• The methodology states plainly that the analysis is observational and does not establish causation.
• The 2026 utilization figure is a full-year projection based on data through the second quarter.
• The data cannot capture management practices, demand, staffing, pricing, or non-Clio technology.

What do clients think?

Here the picture darkens for firms. In Clio's consumer survey, 57% of respondents say the same work delivered faster should cost less; only 13% would pay more. Forty-seven percent say AI reduces the value of legal services. Asked the single most important reason to hire a lawyer on a routine matter, speed ranked dead last at 3%.

Corporate clients agree. Fifty-nine percent of in-house counsel reported noticing no savings from outside firms' AI use, and only 7% had seen lower matter costs. One lawyer quoted in the report put it bluntly: if AI settles a case in 30 hours instead of 100, "just do the math."

Lenon counters that collection rates serve as a rough proxy for client satisfaction; AI adopters collect 2 points more. Fair. But paying today's bill is not accepting tomorrow's price.

A buried finding sharpens the tension: holding AI adoption constant, hourly-billing firms were the least likely to report AI improved revenue, while alternative-fee firms were the most likely. Clio's own conclusion is that gains under hourly billing are possible, but not automatic. Firms must redeploy freed time or reprice the work.

Next year, Clio plans to ask whether AI users work more nights and weekends — testing whether AI frees lawyers' time or merely fills it.

For now, AI is not killing the billable hour. It is making hours easier to find. The open question is how long clients keep paying for what it finds.

Disclosure: Clio paid Embry's travel and registration for ClioCon26.