What is the twitter font?

The official Twitter font is called "Circular" which was created by Swiss design company, Lineto. It was chosen for its simple, clean and easily readable design. The font family includes various weights (light, book, medium and bold) and styles (normal and italic) that are all optimized for both digital and print platforms. The font is widely used throughout Twitter's brand identity, including its logo, website, and app design. The circular font has become a popular choice for tech companies and startups due to its modern and minimalist look.