The city that is often referred to as "the city that never sleeps" is New York City, not Karachi.
New York City's nickname stems from its vibrant and bustling 24/7 culture. The city is known for its diverse population, vibrant nightlife, and countless attractions that remain open late into the night.
While Karachi is a large and lively city in Pakistan, it does not have the same reputation for being a "city that never sleeps" as New York City.
Karachi is a bustling metropolis with a vibrant culture, but it does have a more traditional sleep schedule compared to New York City.