I’ve been to all of these cities. Umm its a close one, they are all WAY more advanced technologically than any US cities. Public transportation, etc are all vastly superior. They are all cities well known for high technology.
I will say probably Tokyo is still #1 – it’s been probably the most technologically advanced city in the world since Japan rebuilt in the 1960s and has kept that crown since the 1980s when Japan went tech crazy. Want to know how convenient it is there? You can order a bowl of ramen using a vending machine – not instant ramen – actual ramen!
Seoul and Shanghai are close. Seoul used to be the more advanced one but Shanghai has rapidly caught up in the last few years. I would put those two at a tie.
Taipei just cannot compete with these other cities because they are megacities. Taipei is not a megacity – it’s population is only 2.6 million – similar in size to Toronto or Chicago. that means its just a world class city but not a mega city. In comparison, Shanghai has a population of 24 million, Tokyo with 12 million and Seoul 10 million people. Not comparable. It’s got great tech too – but due to its smaller size really cannot compete. Hong Kong and Singapore would probably beat Taipei here.
Edit: City comparison is vague, but I’m going to go by population density, global influence, etc here’s what I would roughly rank each city
Megacity tier (super alpha cities) – these are the most influential cities in the world and amongst the most populated
New York City, Shanghai, Beijing, Tokyo, Seoul, London, Moscow, Mumbai, Hong Kong, Sao Paulo, etc
Alpha tier – these are world class cities leading their respective countries that are on just a tier lower than the mega city tier
Istanbul, Paris, Toronto, Los Angeles, Taipei, Singapore, Rio de Janiero, Mexico City, Madrid, Cairo, Rome, Berlin, Chicago, Sydney, Guangzhou, Shenzhen, Delhi, Jakarta etc
Beta tier – these are cities that very populated and strong economically but on a tier below the alpha tier
Vancouver, San Francisco, Hangzhou, Barcelona, Tianjin, Busan, Osaka, Houston, Melbourne etc
Taipei is in the alpha tier but not megacity tier.