What is the highest amount of babies born in a single birth?

An Australian woman gave birth to nine babies in 1971, but only six of the babies survived, according to CNN.com. This birth is documented in the Guinness Book of World Records.

The Chukwu octuplets were born in 1998, and the Suleman octuplets were born in 2009. Both set sof octuplets tied for the record of the largest number of babies born who survived. The Chukwu octuplets were not all born in a single birth; one baby was born vaginally, and the remaining seven were kept in the womb for another two weeks before their birth. The Suleman octuplets were born nine weeks premature in 2009 and were conceived through in vitro fertilization.