Cerebras CEO Andrew Feldman speaks to the media at the Colovore office in Santa Clara, Calif., on March 12, 2024.The Washington Post | Getty ImagesCerebras CEO Andrew Feldman admitted that his artificial intelligence chipmaker made a mistake last week when it didn't immediately explain its decision to withdraw its registration for an initial public offering.In a LinkedIn post late Sunday, Feldman wrote that the company still wants to go public but has changed significantly since its initial fili...