Apple plans to launch a revamped version of Siri later this year, and a key metric highlighting its focus on AI is its research and development (R&D) expenses, which rose 33.6% in the fiscal 2026 second quarter (ended March 28) compared to the same period last year. This spending is accelerating, as between fiscal 2020 and fiscal 2025, Apple's R&D expenses grew by 84.2%, while revenue was up 51.6%. The company reported year-over-year revenue growth of 16.6% for the second quarter, its fastest top-line gain since the 2021 fourth quarter. CEO Tim Cook, who will step down from his role in September, stated on the earnings call, "We are investing in products and services, and we see opportunities in both. We could not be more excited about how the future is playing out." CFO Kevan Parekh added, "From the start, we have believed AI is a really important investment area for Apple. We are going to be doing that incrementally on top of what we normally invest in our product road map." Apple's advantage comes from its more than 2.5 billion active devices.