what is the ideal character limit for a tweet on twitter

The character limit for a tweet on Twitter is 280 characters. This is an increase from the original limit of 140 characters, which was partly driven by the 160 character limit of SMS, with 20 characters reserved for commands and usernames. Twitter expanded the character limit to 280 characters in 2017, citing a disparity in tweet length between different languages as the primary motivation for its move. However, Twitter Blue subscribers are allowed 4,000 characters per tweet.