General counsel have started asking a question that makes billing partners nervous: if your firm uses AI, why does my invoice look the same?

Fixed-fee and subscription arrangements, once the province of boutique firms, are moving into the Am Law 200. Procurement teams increasingly request disclosure of AI use and expect efficiency gains to be shared.

The firms adapting fastest are reframing their value around judgment, risk allocation and outcomes rather than time. That requires better data on matter costs — data many firms have never collected with discipline.

The billable hour will not vanish overnight. But its role as the default unit of legal value is ending, and the firms that design alternative pricing now will set the terms for everyone else.