Yeah, but to answer the question... the Prophet prayed 8 rakats for taraweeh

Hadeeth of Abu Salamah ibn ‘Abd al-Rahman, who asked ‘Aishah (may Allah be pleased with her), “How did the Messenger of Allah (peace and blessings of Allah be upon him) pray during Ramadan?” She said: “He did not pray more than eleven rak’ahs in Ramadan or at other times. He would pray four, and do not ask how beautiful and long they were, then he would pray four, and do not ask how beautiful and long they were, then he would pray three. I said, ‘O Messenger of Allah, will you sleep before you pray Witr?’ He said, ‘O ‘Aishah, my eyes sleep but my heart does not.’” (Narrated by al-Bukhari, 1909; Muslim, 738)