This is the seventh consecutive year that Indian- Americans have retained the Scripps National Spelling Bee, which was watched live by millions of people in the US.
An eighth grader from the Alternative School for Maths and Science, Sriram (14) is from New York, while Ansun (13) is a seventh grader from Texas.
In fact like last year, the last three contestants were Indian-Americans - Sriram, Ansun and Gokul Venkatachalam from Missouri.
"I was happy when I entered the final. I am even happier that I am the co-champion," said Ansun who in the last 22nd round correctly spelled "feuilleton", which is defined as "a part of a European newspaper or magazine devoted to material designed to entertain the general reader."
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And in the 21st round Sriram correctly spelled "stichomythia", which is defined as "dialogue especially of altercation or dispute delivered in alternating lines." This was the fifth appearance for Sriram.
Ansun and Sriram said they are happy to share the trophy.
Both Sriram and Ansun will receive a USD 30,000 cash prize, an engraved trophy and other gifts.
This is the first time the bee has ended in a tie 1962, organizers said. The Bee has previously had co-champions in 1962, 1957 and 1950 in its 89-year history.
Once there are three spellers left in a round, the next round begins with a 25-word list. Ordinarily, a winner is declared if one speller misspells and the remaining speller correctly spells two words in a row.