When Twitter first began, how many characters could you type in a tweet?

When Twitter first began, the character limit for tweets was 140 characters. This character limit was initially set to accommodate SMS messaging constraints, as Twitter was originally designed to be compatible with text messaging services. The 140-character limit encouraged brevity and concise communication, which became a defining characteristic of the platform. However, in November 2017, Twitter doubled the character limit for tweets to 280 characters, allowing users more space to express themselves and share information.