The tenth episode of Season 8, and the one hundred and seventy-eighth episode of America's Got Talent overall, aired on July 23, 2013. It was the first Quarterfinals episode and took place in New York. 12 acts performed for 4 spots in the Semifinals.
This was the first ever episode to take place in Radio City Music Hall, in New York. This was also the first episode in the history of reality competition shows that counted votes through Twitter.
|1. Anna Christine||Singer and Pianist|
|2. Tellavision||Television Dance Group|
|3. American Hitmen||Rock Band|
|4. Special Head||Novelty Act|
|5. Fresh Faces||Dance Group|
|6. Collins Key||Magician|
|7. Kevin Downey Jr.||Stand-up Comedian|
|8. Aaralyn & Izzy||Heavy Metal Singer and Drummer|
|9. Alexanderia the Great||Escape Artist|
|10. KriStef Brothers||Hand Balancers|
|11. Hype||Dance Group|
|12. Branden James||Opera Singer|