New Delhi, May 5 -- Global artificial intelligence (AI) spending is projected to rise significantly in the coming years, with UBS estimating a 60 per cent year-on-year increase in 2025, to USD 360 billion.The momentum is expected to continue in 2026, with a further 33 per cent rise to USD 480 billion.However, the share of spending attributed to the Big 4 tech giants - Microsoft, Amazon, Alphabet, and Meta - is anticipated to decline, falling from 58 per cent in 2025 to 52 per cent in 2026.The report said "we expect globalAIspend to increase by 60 per cent y/y in 2025 to reach USD 360bn and 33 per cent in 2026 to reach USD 480bn.We expect the combined share of these companies as a percentage ofAIspend to rise from less than 20 per cent in ...