The Twitter character limit is 140 words or less.
I repeat: Twitter has a 140 character limit on all posts.
If you are creating a social media post and select Twitter, you will not be able to publish a post with more than 14o characters.
If you attach an image to a Twitter post, that will use 23 of your 140 characters.
Nevertheless, don't be bashful about sacrificing those 23 characters. Tweets with photos get twice the engagement as those without photos.