The legal profession has survived recessions, regulatory upheavals and the occasional partner meltdown. But the next threat to BigLaw’s favourite revenue model may come from something far less dramatic.
A machine that reads faster than any associate and which could spell the end of the infamous ‘billable hour’, which has been touted as being in its end time for some time.
According to Jeff Bleich, general counsel at AI company Anthropic, (pictured) the traditional billable hour could soon be on borrowed time. Speaking at the American Bar Association’s White Collar Crime Institute, Bleich argued that artificial intelligence is stripping away the sort of repetitive work that once kept armies of junior lawyers busy and billing.
And when the work disappears, so does the time sheet.
“The value is no longer the time spent,” one panel participant noted, reflecting a growing view among corporate clients that results matter more than hours logged.
The Billable Hour
For decades the billable hour has been the economic engine of law firms. Lawyers track work in six-minute increments, then present clients with invoices that resemble a chronicle of professional existence. The model rewards time rather than efficiency, which has never sat particularly well with clients who prefer their problems solved quickly rather than slowly and expensively.
Bleich’s point is simple. AI tools can now perform tasks like document review, legal research and contract analysis at speeds that make the traditional billing structure look faintly absurd. We recently published an article on the demise of the billable hour with Legora’s AI tool.
If a machine can complete in minutes what used to take ten associates several days, the economics of billing by the hour begin to wobble.
Clients Are Already Moving
Corporate legal departments have been quietly pushing this shift for years. Fixed fees, outcome pricing and subscription-style legal services are increasingly attractive alternatives to hourly billing.
AI has accelerated that trend in a way that we haven’t experienced before, hastened by the equity companies buying into law firms to maximize efficiencies and profitability.
In-house teams are deploying legal AI tools to review contracts, draft documents and handle compliance checks before outside counsel even sees the file. The result is fewer routine tasks flowing to law firms and greater pressure to justify every invoice.
For law firms, the message is awkward but unavoidable. The old model where clients paid hundreds of dollars an hour for routine document review may not survive a world where software performs the same work instantly.
The Irony of the Billable Hour
There is also a curious historical twist in all this.
The billable hour is widely believed to have been popularised in the early twentieth century by firms including WilmerHale, which coincidentally represents Anthropic in a current dispute with the U.S. government.
So the system that once helped build the modern law firm may now be undone by the very clients and technologies those firms helped create.
Lawyers Will Not Disappear. The Work Will Change
Before anyone panics about mass unemployment in the legal profession, the likely outcome is less dramatic.
AI will handle the repetitive work that once justified endless billing entries. Lawyers will still be needed for strategy, judgment, negotiation and courtroom advocacy. Those things remain stubbornly human.
But the billing model may look very different.
Law firms that cling to time-based billing for tasks that AI performs instantly risk looking like taxi drivers arguing against ride-sharing apps. Their world is changing, and the billable hour is going to as well.
