Bombardier Challenger 650 vs Gulfstream G280 vs Gulfstream G400 vs Gulfstream G500

In category, the Bombardier Challenger 650 and Gulfstream G280 are typically viewed as large-cabin (super‑midsize) business jets, while the Gulfstream G400 and G500 step up into the long‑range, large‑cabin class with more cabin volume and higher overall capability. For range, the Challenger 650 and G280 generally cover the mid‑to‑upper 3,000‑nautical‑mile segment (roughly around 3,800–4,000 nm depending on configuration and conditions), suitable for many transcontinental U.S. missions and some North Atlantic pairings with favorable winds. The G400 moves into true long‑range territory at about 4,200 nm, while the G500 extends farther still, commonly cited around 5,200 nm, enabling more nonstop intercontinental city pairs. Passenger capacity broadly overlaps but trends upward with size: the Challenger 650 and G280 are commonly arranged for about 8–10 passengers (with maximums higher), whereas the G400 and G500 are often configured around 10–14 passengers, with the G500 typically supporting the most spacious, higher-density long-range layouts.