When will the first useful quantum computer be developed?

Kalshi·Science and Technology·ends Jan 8, 2040

As of 14:22 UTC on 30 Oct 2026, the highest-priced of the 4 markets in “When will the first useful quantum computer be developed?” on Kalshi are “Before 2040” at 62%, “Before 2035” at 50% and “Before 2030” at 30% (-3pp in 24h). The event has $14 in Kalshi-reported 24-hour volume. pdata.world compares it with 24 related events on Manifold and Polymarket.