CHARLOTTE, NC — Iron Crest Jiu-Jitsu announced Tuesday that it has reduced its coaching staff by 10 percent, citing ‘a difficult but necessary investment in artificial intelligence,’ and unveiled a 12.9-inch iPad mounted to the south wall of the training area as the academy’s new head AI instructor.
The reduction, which took effect at the close of the noon class, eliminated the position of Devin Hartke, 31, a purple belt who had taught the noon class for six years and who learned of his termination via a printed-out screenshot of an Instagram caption his wife showed him over dinner.
In place of Hartke, members entering the gym Wednesday morning were greeted by an iPad Pro running on Airplane Mode, mounted at exactly 5 feet 1 inch beneath a laminated sign that read, in 72-point Comic Sans, ‘AI INSTRUCTOR — BLACK BELT EQUIVALENT.’ Below that, a smaller printout clarified: ‘DO NOT TAP. WATCH AND LEARN.’
The iPad’s screen displays footage from a 2019 seminar titled ‘Why The Modern Game Is Going Soft,’ delivered by Iron Crest founder Brennan Coltrane at a now-defunct Holiday Inn conference room in Mooresville. The four-minute clip, which loops continuously, features Coltrane in a faded blue gi explaining why he refuses to teach berimbolo. The audio is missing because the iPad is on Airplane Mode, which Coltrane has insisted at three separate member meetings is ‘a feature, not a bug,’ and which ‘lets the AI think more.’
‘This is the future,’ said Coltrane, 44, a brown belt who promoted himself to black in 2017 after his coach moved to Florida. ‘2026 is the year jiu-jitsu starts to dramatically change the way that we train. Drills that used to require big rooms can now be accomplished by a single very talented person.’
Pressed for clarification on the phrase ‘single very talented person,’ Coltrane pointed to the iPad.
The shift was financed in part by a $40 monthly increase to membership dues, which Iron Crest has labeled the ‘AI compute layer.’ When asked whether an iPad on Airplane Mode performs any computation, Coltrane said, ‘All of it. All the compute. That’s the whole point.’
A QR code has been affixed to the front desk to allow members to ask the AI questions. The QR code resolves to a Venmo account belonging to Coltrane’s older brother, Tyler, a real-estate agent in High Point who has reportedly received $740 in tips since Tuesday and has not responded to any of them.
The 6 a.m. class Wednesday started in silence. Several members had taped homemade gi patches over their chests reading ‘AI-COMPATIBLE.’ A blue belt named Marisa Velazquez, 27, said she watched the iPad for the entire 60-minute class while another blue belt held a stopwatch.
‘Our partners weren’t really showing us much, but the AI was confident,’ she said. ‘It kept doing the same head-pat thing for like four minutes and then it would do it again. After a while you start to see what it’s doing.’
When the iPad’s screen briefly went black due to a battery prompt, three members reportedly fell to their knees.
Hartke, the laid-off purple belt, told reporters from the parking lot of an O’Reilly Auto Parts where he is now a part-time inventory clerk that he understood the academy’s vision but hoped his replacement would teach the noon class with ‘at least the volume on.’
‘I taught the noon class for six years,’ Hartke said. ‘I made $18 an hour and a free protein shake. The iPad doesn’t even drink the shake. It’s just gonna let it sit there.’ He paused. ‘I guess he.’
In an Instagram post viewed 3,100 times before being limited to close friends, Coltrane spelled out the rollout. The post, captioned ‘THE FUTURE OF GRAPPLING IS HERE,’ showed the iPad in a corner of the mat with a small zafu cushion placed in front of it. ‘We’re not replacing coaches,’ Coltrane wrote. ‘We’re replacing the idea of coaches. The iPad doesn’t need water. It doesn’t need a bathroom break. It doesn’t say I had a tournament this weekend, can someone else teach. It is always there. It is forever.’
A second post from Tuesday evening, since deleted, showed Coltrane standing next to the iPad with his arm around it, both bowing slightly. The caption read: ‘Day one. He’s got it.’
The academy’s website now features a banner reading ‘Now Powered By AI’ beneath a stock photo of a lightbulb. The class schedule page has been updated to indicate that all classes formerly taught by Hartke are now ‘Self-Directed AI Drilling,’ and that members are encouraged to ‘let the iPad guide you, but trust the body.’
Reached for comment Wednesday afternoon, an unnamed black belt from a competing academy across town said this was ‘honestly not the weirdest thing Brennan has done this year.’ When asked to elaborate, the black belt mentioned the time Coltrane introduced a ‘proprietary’ new submission called the ‘Crestpaw’ that turned out to be a cross-collar choke. ‘He named it after his dog,’ the black belt said. ‘His dog is also named Crestpaw.’
As of press time, the iPad had not awarded any stripes, but several members reported that during a particularly quiet drilling session Tuesday night, the screen briefly flickered to a Notes app document titled ‘purple_belt_promotions.txt,’ which was empty except for the words ‘we’ll see.’
Membership at Iron Crest is reportedly up two new signups since Tuesday, both of whom are uncles of Coltrane.