From searching around it doesn’t seem so… but trying here in case anything has been updated.
I’m looking mostly to exclude re-tweets. If I am trying to do a live feed of CNN or god forbid Justin Bieber / anyone with millions of followers my server gets bombarded with 20-100+ retweets per second… You can filter out RTs/replies in the search API, so I don’t understand why it’s not a trivial matter to include it in Stream API as well. It seems to be a common request and would lower overhead considerably.
Any chance the Account Activity API (in beta) will allow for filtering?