How they compare
These two take opposite approaches. Chaturbate is built around free public shows: you can watch and chat without paying, tips drive the shows, and there's always a huge choice of rooms. Tokens cost roughly 8 to 11 cents each at the time of writing.
Flirt4Free has been streaming since 1996 and feels more premium. There are fewer models online (about 230 when we checked one night, against Chaturbate's thousands), but the shows are polished and in HD, with women, men and trans performers in full sections. It adds a schedule of upcoming shows, party rooms, multi-user privates and cam-to-cam. Most of the action is paid in credits, with privates typically 30 to 60 credits a minute, and new members get 120 free credits.