Side-by-side comparison of AI visibility scores, market position, and capabilities
Big Four professional services partnership at $51.2B FY2024 revenue (+3.9%); CEO Janet Truncale launched EY.ai Agentic Platform with NVIDIA (150 agents, 80K professionals) competing with Deloitte and PwC for global audit and consulting.
EY (Ernst & Young) is a London-based global professional services partnership — one of the Big Four accounting and consulting firms — generating $51.2 billion in record annual revenue in fiscal year 2024 (+3.9%), with approximately 393,000 professionals operating across more than 700 offices in over 150 countries and territories. EY's roots trace to 1903 when Alwin C. Ernst and Theodore Ernst founded Ernst & Ernst in Cleveland, Ohio; the modern EY emerged from the historic 1989 merger of Ernst & Whinney and Arthur Young & Co. EY's integrated service model spans assurance (the highest-revenue segment among Big Four peers), consulting, strategy and transactions through EY-Parthenon (created via the 2014 acquisition of The Parthenon Group), and tax services. In July 2024, Janet Truncale became EY's Global Chair and CEO, the first woman to lead the firm. In 2025, EY launched the EY.ai Agentic Platform in partnership with NVIDIA, deploying 150 AI agents supporting 80,000 EY professionals across tax, risk, and finance domains to surpass 3 million tax compliance outcomes annually.
Global pharma company with $55B 2024 revenue; successfully diversifying beyond Humira with Skyrizi, Rinvoq, and $8.7B Cerevel neuroscience acquisition.
AbbVie is a global research-based biopharmaceutical company focused on developing treatments for complex and serious diseases including immunology, oncology, neuroscience, aesthetics, and eye care. Spun off from Abbott Laboratories in 2013 and headquartered in North Chicago, Illinois, AbbVie rapidly became one of the world's top pharmaceutical companies on the strength of Humira — the world's best-selling drug for over a decade with peak annual sales exceeding $20 billion. AbbVie is listed on the NYSE and is a component of the S&P 500 and Dow Jones Industrial Average.
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