Cenat uploaded his first YouTube video on January 13, 2018,[16] and began making videos surrounding pranks and challenges.[17] He joined the YouTube group AMP (Any Means Possible) after being discovered by fellow Bronx-born YouTuber Fanum. He regularly appeared in the channel's videos from then on. He began streaming on Twitch in February 2021 after migrating from YouTube, broadcasting gaming and reaction content.[18]
Cenat had an acting role in the trailer for Polo G's June 2022 single "Distraction".[19] On May 8, 2022, Cenat released his debut single "Bustdown Rollie Avalanche" with NLE Choppa.
In 2022, Cenat began including celebrity guests on his streams, including Bobby Shmurda in April,[20]Lil Baby in October, and 21 Savage in November, who helped him receive his highest viewership at the time with 283,245 concurrent viewers at its peak.[21]
In October 2022, Cenat was nominated for the 12th Streamy Awards in the "Streamer of the Year" and "Breakout Streamer" categories, winning the former in December.[22][23][24]
On January 5, 2023, Cenat was accused by TikToker Jovi Pena of downplaying and refusing to help her after her alleged rape at a New Year's Eve party he hosted.[citation needed] Pena said that at some point she asked Cenat if she could leave the party, to which he told her to go to sleep in an upstairs room due to her being drunk. Pena then said that a fellow party-goer named Djigui Seck entered said room and "brutally raped me to the point where I bled," while she was asleep.[25] The next day, Cenat responded on stream, saying that the reason he did not respond earlier was because he went to contact the police and his lawyers. He also said he did not want to make the incident public. He said that Seck had been a good friend of his since high school, but that he had no knowledge of the alleged rape and that he had not been in contact with either party since the incident.[26]
On January 31, 2023, Cenat began a month-long subathon. On February 28, 2023, he became the most-subscribed Twitch streamer of all time, reaching 306,621 subscribers at its peak.[27] On March 11, 2023, Cenat won "Streamer of the Year" at the 12th Streamer Awards.[28]
In March 2023, Cenat was reported to be making approximately $23,280 per month from his sleep streams, resulting in an annual income of $285,480. According to Streams Charts, his sleeping broadcasts have amassed over 5.6 million hours watched, showcasing the significant viewer engagement during these streams.[29]
On April 17, 2023, Cenat was temporarily suspended on Twitch for reasons undisclosed, though he eventually returned, with him initially noting it as a permanent ban in error.[30]
In May 2023, Cenat announced a livestreamed show with IShowSpeed exclusively on Rumble, titled the Kai 'N Speed Show.[31]
On August 4, 2023, Cenat held a giveaway, consisting of PlayStation 5 consoles and gift cards, in Union Square, Manhattan with Twitch streamer Fanum. Thousands of his followers appeared at the impromptu event, which soon spiraled out of control and devolved into a riot. The New York City Police Department (NYPD) mobilized forces in the area as a large group swarmed a Best Buy in the area.[32] Cenat was arrested by the NYPD for inciting civil unrest; police also made 65 other arrests.[33][34][35] He was later charged by the NYPD with first-degree rioting, inciting a riot, and unlawful assembly.[35]