A typical large law firm implementing Lexis+ AI—modeled as a global firm with $1.5 billion in revenue, 950 attorneys, and 15 research staff—achieved a 344% ROI over three years and recouped its investment in under six months. During that period, firms generated $30 million in additional revenue, saw a 1.5% increase in profit per equity partner (about $5.7 million more), and realized a 4% uplift in per-attorney profit. Key efficiency gains included partners and senior attorneys saving up to 2.5 hours per week on drafting and research, junior associates recovering roughly 35% of their annual hours from non-billable work, and research staff saving 225 hours per year. Beyond these quantifiable results, firms also reported higher work quality, faster turnaround times, enhanced client satisfaction, and improved work-life balance for attorneys.