Legal Economics

AI & Unit Economics

Billing Realization Holds Post-AI — But Credit Disputes Are a Hidden Risk

The Legal Stack's 2026 AI Retention and Billing Realization Report surveyed 74 firms and found that realization rates — billed time actually collected — have remained within two percentage points of pre-AI baselines in 61% of firms. Retention in AI-deployed practice areas was 91.3% versus 89.7% in non-AI areas, a difference within the margin of error. However, one finding stands out: firms that re

BY FRONTIER DESK · JUNE 29, 2026 · 1 MIN READ

The Legal Stack's 2026 AI Retention and Billing Realization Report surveyed 74 firms and found that realization rates — billed time actually collected — have remained within two percentage points of pre-AI baselines in 61% of firms. Retention in AI-deployed practice areas was 91.3% versus 89.7% in non-AI areas, a difference within the margin of error. However, one finding stands out: firms that restructured billing to reflect AI efficiency before deployment showed client retention of 94.1% in those practice areas. A separate data gap is emerging around origination credit disputes tied to AI-assisted work — the report notes these disputes are largely invisible in public compensation data, but are surfacing through lateral moves and partnership contexts. Firms that have not updated credit attribution frameworks ahead of AI scale-up face a governance liability.

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