Uber spent its entire 2026 AI budget in just four months on Claude Code and Cursor, two AI tools that became widely adopted by its engineers. The company's CTO revealed that 95% of Uber engineers now use AI tools monthly, with 70% of committed code originating from AI. The rapid adoption and high costs of these tools have forced Uber to reevaluate its AI budgeting. The situation highlights the challenges of managing AI spending and the potential for unexpected budget blowouts.