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C3 AI was founded in 2009 by Thomas Siebel as "C3". Originally the "C" in the company's name was a reference to " carbon " and the "3" was a reference to "measure, mitigate and monetize" because the company's original goal was to help manage corporate carbon footprints.
For some time in 2016 the company was named C3IoT and before that was briefly named C3 Energy.
On September 3, 2025 C3 AI announced that Stephen Ehikian, former acting administrator of the General Services Administration, had been appointed chief executive officer (CEO) effective September 1, with Siebel continuing as executive chairman.
On May 8, 2026, Thomas Siebel returned as the CEO of the company, while Ehikan became the president.