Macro

The IMF credits AI investment for holding global growth above 3%. It has also modeled the unwinding

The IMF's October World Economic Outlook, published on October 13th in Bangkok, forecasts global growth of 3.1% in 2026, a touch above July's 3.0%, and 3.4% in 2027. Both are below 2025's 3.5%. The fund says strong AI investment is offsetting the energy shock from the war in the Middle East, which has kept oil above $100 a barrel. America is forecast to grow 2.3% in both years, helped by consumption, tax cuts and AI investment, though the import content of AI hardware reduces the boost. The euro zone's 2026 forecast rose to 1.1% from 0.9%, and Britain's by 0.3 points to 1.3%, both on AI investment.

The gains are not evenly shared. South Korea, Malaysia, Mexico and Thailand, which supply AI hardware, were upgraded. Elsewhere the picture darkens. The IMF has downgraded 47% of economies since April, including energy importers outside AI supply chains. Just 32 countries now account for 95% of global growth, against 54 in April. China's forecast edged down to 4.5% for 2026 and 4.0% for 2027, and Gulf forecasts were cut sharply. The AI surge also keeps upward pressure on prices. Global inflation is forecast at 4.7% this year and 4.1% next.

The fund has modeled the reversal too. In a faster-adoption scenario, global GDP could be a further 0.6% higher by 2029, with most of the gain going to America and China. In a correction scenario, as FourWeekMBA reads the report's Box 1.2, unwinding AI investment directly cuts global GDP by as much as 0.4% and investment by as much as 1.3% by 2028. Wealth effects and tighter financial conditions deepen the hit to 0.6% of output, with spillovers into sovereign bond markets. The fund's new chief economist, Silvana Tenreyro, said the world economy has been resilient but that the resilience is under strain.

"The global economy has been resilient, but that resilience is under strain."
— Silvana Tenreyro, IMF chief economist

AI investment has moved from a sector story to a macro one. The IMF names it as the prop under world growth, and models its unwinding as a scenario with a number attached.

Sources: Reuters via The Japan Times, Al-Monitor, Business Recorder, FourWeekMBA · Oct 13, 2026