In February, the micro-blogging platform introduced 4,000-character-long tweets for Blue subscribers. "Sign up for Twitter Blue to access these new features, and apply to enable Subscriptions on your account to earn income directly on Twitter. Tap on Monetization in settings," said the Elon Musk-run company. Tweet Character Limit: Twitter Rolls Out New Feature That Allows Tweets With 10,000 Characters for Paid Blue Subscribers.