United States The original version of the song had sold only 52,000 downloads before the version with Christina Aguilera was released, according to
Nielsen SoundScan. "Say Something" debuted at number 16 on the
Billboard Hot 100 chart, following the impact of the performance on
The Voice, as the song started at number-one on
Digital Songs with 189,000 sold, with the remix featuring Aguilera accounting for 86% of the song's overall download sales in the chart's tracking week. The song was also a success on the
Canadian Hot 100, debuting at number 9 and peaking at number one. After the performance on the AMAs, the song jumped to number 3 on the
Digital Songs chart, with 197,000 copies. It also jumped from number 18 to number 10 on the
Billboard Hot 100 chart, becoming A Great Big World's first top-ten single and Aguilera's 11th top ten and second in 2013 (with the other being "
Feel This Moment" at number eight), becoming the second time she achieved multiple top 10s in a single year, with the first being in 2000, when '
What a Girl Wants' (number-one for two weeks), '
I Turn to You' (number three) and '
Come On Over Baby (All I Want Is You)' (number-one for four weeks), all from her
self-titled debut album, reached the top tier. The song is also Aguilera's first top 10 with lead billing since October 2008, when her single "
Keeps Gettin' Better" debuted at its number seven peak. "Say Something" also became
Epic's first top-ten hit since 2008 with
You Found Me by
The Fray. The following week, the song sold 355,000 downloads and climbed to number 14 on Radio Songs, although it fell to number five. In February 2014, the song reached the
Radio Songs top 10, becoming the band's first top 10 and Aguilera's ninth, marking her first Radio Songs top 10 in a lead role since "
Beautiful" in 2003. The song reached its 3 million sales mark in February 2014, and was certified triple platinum on March 5, 2014. In June of the same year, the single was certified 4× Platinum. As of December 2014, the song had sold about 4 million copies in the US. In May 2017 the single was certified 6× platinum in the United States for sales in excess of 6 million units.
Australia and Europe In
Australia, "Say Something" debuted at number 47 on the week of December 29, 2013. Later, it re-entered at number 45, on January 19, 2014. The song went to jump from number 50 to number 9, on the week of February 2, 2014, until it reached the top of the
ARIA Charts on the week February 16, 2014. It became A Great Big World's first number-one single and Aguilera's third number-one single (the last being "Beautiful" in 2003). In
New Zealand, the single debuted at number 18, on December 16, 2013, while on February 10, 2014, the song reached a peak of number two; Aguilera's highest charting-single since her collaboration with
Maroon 5 in "
Moves Like Jagger" (2011), and her 14th top-five single. ==Music video==