Some of the biggest startups by valuation include companies like Uber, Airbnb, and WeWork. However, these companies are no longer considered startups as they have become well-established and publicly traded companies. As of 2021, some of the most valuable startups in the world include companies like SpaceX, Stripe, and Palantir Technologies. However, it’s worth mentioning that the term “biggest” is relative, it can be measured by various metrics such as Revenue, Valuation, number of employees, reach and impact, etc. There are also many other startups that are making a significant impact and growing rapidly in different industries such as Deliveroo, Robinhood, and Zoom, to name a few.

Sure, some other notable startups that have gained significant attention and achieved high valuations in recent years include.

As of 2021, the biggest startup in the world is believed to be the Chinese technology company, Byte Dance, which owns the popular social media app. The company was valued at over $100 billion during its latest funding round in 2020. However, it’s worth noting that companies can fluctuate in terms of valuation and size, so this information may become outdated.

In addition to tik-tok, Byte Dance also owns several other popular apps such as (the Chinese version of tik-tok), toutiao (a personalized news app), Video (a short-form video app). The company was founded in 2012 by Zhang Yiming and has quickly grown to become one of the largest and most valuable tech startups in the world. Byte Dance’s success has been driven by its ability to create and acquire a wide range of popular apps that appeal to a wide range of users.

It’s also worth noting that it’s difficult to determine the “biggest” startup in the world as it can be measured in different ways, such as by revenue, valuation, or number of users, etc. Other companies like Uber, Airbnb, and We Work, which are also considered as “unicorns” (a startup company valued at over $1 billion) have also grown significantly in recent years, although their valuations have fluctuated in recent years.

Some other notable startups that have achieved significant success and are considered among the biggest and most valuable in the world

• SpaceX: Founded by Elon Musk in 2002, SpaceX is a private aerospace manufacturer and space transportation services company. The company has developed the Falcon 1 and Falcon 9 launch vehicles, both designed to be reusable.
• Stripe: Founded in 2010, Stripe is a financial services company that provides a way for individuals and businesses to accept payments over the internet. The company’s software enables transactions with various payment methods, including credit cards, and has become one of the most widely used payment platforms on the internet.
• Robinhood: Founded in 2013, Robinhood is a commission-free trading app that allows individuals to invest in stocks, options, and crypto currencies. The company’s app has become extremely popular among millennials and has seen a surge in popularity during the pandemic.
• Zoom: Founded in 2011, Zoom is a video conferencing software company which provides a remote conferencing service that combines video conferencing, online meetings, chat, and mobile collaboration. The company’s platform has seen a major increase in usage during the COVID-19 pandemic.
• Postmates: Founded in 2011, Postmates is an American company that operates a network of couriers who deliver goods locally. The company’s app allows customers to order food and other goods from local merchants and have them delivered.
• NIO: Founded in 2014, NIO is a Chinese multinational automotive company headquartered in Shanghai. The company designs and develops electric vehicles, competing with Tesla in the Chinese market.

It is difficult to determine the biggest startup in the world, as the definition of a “startup” can vary and there are many companies that could be considered for the title. Some of the largest and most successful startups in recent years include Uber, Airbnb, and Stripe. These companies have achieved significant growth and have been valued at billions of dollars. However, the startup industry is always changing and new companies are constantly emerging, so it is possible that there may be even bigger startups in the future.