KPMG signed a deal with Anthropic to embed its Claude AI tools across global tax and advisory platforms. Rather than offering employees optional AI access, the Big Four firm is restructuring core systems to house the majority of its nonaudit services, aiming to accelerate workflows and improve efficiency.

This marks the first time Anthropic will integrate Claude on a Big Four tax platform. Most competitors have stopped short of overhauling their main systems around Anthropic or OpenAI, preferring to let employees use AI tools on the side. KPMG's approach signals a sharper bet on AI reshaping professional services at scale.

For investors tracking the enterprise AI race, KPMG's platform-wide deal with Claude stands out as a notable win for a smaller AI player competing against dominant names. The move also raises the bar for rivals seeking similar platform-level contracts with Big Four firms.