Will real global GDP grow 10% or more over any four quarter period before the end of 2035?

TL;DR

I put the probability at 3%. The normal macro path is almost closed: no annual world real GDP series I checked has reached 10%, and current official forecasts are near 3%. A YES mainly requires a fast, broad, measured AI productivity shock or a rare measurement/rebound loophole.

Context

The question opened on July 21, 2026 during 2026Q3, so I treat 2026Q4 as the first eligible start quarter and 2034Q4 as the last eligible start quarter, giving 33 four-quarter comparisons ending from 2027Q4 through 2035Q4. The IMF QGDP_WCA dataset is the intended resolution source; IMF describes it as quarterly GDP for the world and selected aggregates, disseminated seasonally adjusted, and its April 29, 2026 brief says constant-price world aggregates are built from PPP-adjusted country data and benchmarked to annual constant-price WEO growth rates (IMF QGDP_WCA; IMF QGDP data brief, Apr. 29, 2026).

The threshold is much higher than it sounds. A 10% four-quarter increase requires average quarter-on-quarter growth of 2.41% for four quarters, while the latest IMF QGDP brief reported world real seasonally adjusted GDP growth of 0.7% quarter-on-quarter in 2025Q4 and average quarterly growth of 0.8% in 2025 (IMF QGDP data brief, Apr. 29, 2026). The no-rebound rule makes the threshold harder because a start quarter below its level one year earlier does not count.

Evidence

The historical backbone is annual world real GDP growth. This is not the exact quarterly resolution series, but it is the right anchor because the IMF says the QGDP constant-price aggregate growth rates are benchmarked to annual WEO growth rates. The IMF WEO series below is annual percent change, coverage 1980-2026, N=47, April 2026 vintage with 2026 an IMF estimate or projection; the World Bank WDI cross-check is annual percent growth, coverage 1961-2025, N=65, unit percent, weighted average of constant-price GDP, current WDI page as checked on July 21, 2026 (IMF WEO data page; World Bank WDI data page; World Bank WDI metadata). Values are rounded to one decimal.

The table gives zero observations at or above 10%. In the IMF series, the maximum is 6.7% in 2021, a pandemic rebound after -2.7% in 2020; the highest non-COVID reading is 5.4% in 2007. In the longer World Bank series, the maximum is 6.6% in 1964, followed by 6.5% in 1973 and 6.5% in 2021. The useful lesson is not just that 10% has never happened; it is that the best non-rebound observations are still about three percentage points below the threshold.

The current cycle also points away from a near-term YES. The IMF July 2026 WEO Update projects global growth of 3.0% in 2026 and 3.4% in 2027, the World Bank June 2026 Global Economic Prospects release forecasts 2.5% in 2026 and 2.8% in 2027, and the OECD June 2026 Economic Outlook table shows world real GDP growth of 2.8% in 2026 and 3.1% in 2027 (IMF WEO Update, July 2026; World Bank GEP, June 11, 2026; OECD Economic Outlook, June 2026). A quarterly proxy says the same thing: FRED's OECD-sourced G20 series is seasonally adjusted same-period-year-earlier real GDP growth, and its latest observation was 3.2% in 2026Q1, updated July 16, 2026 (FRED G20 quarterly real GDP growth).

The composition arithmetic is a hard constraint. IMF WEO PPP shares for 2026 put advanced economies at 39% of world GDP and emerging/developing economies at 61%, and WEO uses PPP weights for domestic-economy growth composites (IMF DataMapper PPPSH; IMF WEO FAQ on PPP weights). If advanced economies grew 3%, emerging/developing economies would need about 14.5% growth in the same four-quarter window to make world growth hit 10%. That is not a normal boom; it is a global regime change.

AI is the only credible upside channel I found. Mainstream estimates are large in welfare terms but too slow for this resolution: Goldman Sachs estimated in 2023 that generative AI could raise global GDP by 7% over 10 years and lift productivity growth by 1.5 percentage points over that period, the IMF managing director said in February 2026 that AI could boost global productivity by up to 0.8 percentage point per year with the right policies, and Acemoglu's NBER estimate puts AI's effect at no more than a 0.66% TFP increase over 10 years (Goldman Sachs Research, 2023; IMF speech, Feb. 3, 2026; Acemoglu, NBER w32487). A 2026 NBER expert elicitation on AI's economic effects found median expected annual GDP growth of 2.5% by 2030, still far below this question's threshold (Karger et al., NBER w35046). Transformative-AI growth models can produce much faster growth, but those are scenario models conditional on much stronger automation than is visible in current macro data (Korinek and Trammell, NBER w31815).

My numerical forecast has four pieces. I assign less than 1% in total to ordinary non-AI macro volatility, because the historical fitted tail is near zero even with 33 overlapping windows. I assign less than 1% to a crisis-recovery path that slips through the start-quarter filter and to measurement, rebasing, or successor-series issues. The rest is the transformative technology path: roughly an 18% chance that AI or a similar general-purpose technology creates a measured global growth regime shift by 2035, times about a 13% conditional chance that it is early, broad, and officially measured enough to print at least one eligible 10% four-quarter world GDP reading. That channel contributes about 2%, and the union of all channels gives about 3%.

What's non-obvious

The rebound filter changes the reference class. A COVID-style reopening spike is the obvious way to get a double-digit four-quarter number, but it would fail if the start quarter is below its level one year earlier. That turns the question from a crisis-rebound question into a question about genuine acceleration from a non-depressed base.

The AI story is also easy to overstate. GDP measures market output, not consumer surplus, and the World Bank metadata notes that technical progress, quality change, informal activity, and rebasing can distort measured real growth (World Bank WDI metadata). AI can make software, research, and services much better while official real GDP grows 4% rather than 10%, especially if gains show up as lower prices, free services, bottlenecked energy/infrastructure demand, or profits rather than a sudden expansion of measured final output.

Limitations

I could not directly audit the full IMF QGDP_WCA world real-GDP level series. I therefore anchored on the IMF's own QGDP methodology notes, the IMF WEO annual series to which QGDP growth is benchmarked, the longer World Bank annual cross-check, and OECD/FRED quarterly proxies. This is a real limitation, but it is unlikely to hide a normal historical precedent for 10% non-rebound world growth.

The forecast is dominated by the AI tail. Conventional macro data alone would put the probability below 1%; a much more aggressive view of transformative AI deployment and measurement before 2035 could push it above 5%. If the resolver treats 2026Q3 rather than 2026Q4 as the first eligible start quarter, it adds only one extra comparison and does not materially change the estimate.