Deloitte vs PwC
Side-by-side comparison of AI visibility scores, market position, and capabilities
London global professional services (largest Big 4) at $70.5B FY2025 revenue (+4.8%); Anthropic strategic alliance with Scout AI tool and 460,000 employees serving 90% Fortune 500 competing with PwC and Accenture for consulting and audit mandates.
About
Deloitte Touche Tohmatsu Limited (DTTL) is a London, England-headquartered global professional services network — operating as the world's largest professional services firm by revenue, reporting $70.5 billion in aggregate global revenue for fiscal year 2025 (ended May 31, 2025, +4.8% in local currency) with approximately 460,000 employees across 150+ countries — providing audit and assurance, consulting, tax and legal, risk advisory, and financial advisory services to nearly 90% of the Fortune 500 and 8,500+ US private companies. Consulting represents 40%+ of total revenue as Deloitte's largest service line. Global CEO Joseph Ucuzoglu has led the firm since January 2023. Key AI initiatives include the strategic alliance with Anthropic (using Claude for client engagements and internal operations), the Scout AI research tool for client strategy engagements, and $2+ billion in AI capability investment. Founded with roots to 1845 when William Welch Deloitte opened his London accounting office; modern Deloitte formed through the 1989 merger of Deloitte Haskins & Sells with Touche Ross.
PwC reported record $56.9B in global revenue for FY2025 and invested nearly $1.5B to scale AI capabilities, while reducing headcount by 5,600 amid efficiency pressures.
About
PricewaterhouseCoopers (PwC) is a multinational professional services network formed by the 1998 merger of Price Waterhouse and Coopers & Lybrand, and is one of the Big Four accounting and advisory firms alongside Deloitte, EY, and KPMG. PwC operates in 149 countries with approximately 364,000 professionals and is headquartered in London. For the fiscal year ending June 30, 2025, the network reported record gross revenues of $56.9 billion, up 2.7% in local currency, with Advisory services leading at $24.3 billion (up 4.5%), followed by Assurance at $19.8 billion and Tax & Legal at $12.7 billion.
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