Filter realtime Tweets

The Twitter API platform offers two options for streaming realtime Tweets. Each option offers a varying number of filters and filtering capabilities - see the below summary for more details:

API Category Number of filters  Filtering operators
POST statuses/filter Standard 400 keywords, 5,000 userids and 25 location boxes
Basic
Realtime PowerTrack  Enterprise Up to 250,000 filters per stream, up to 2,048 characters each  Premium operators