GPT-5.3-Codex vs GPT-5.6 Luna for job applications

Last Christmas, I was supervising a team with 18 temporary staff and I built the rota myself. I relied on verbal availability and a spreadsheet I updated too late. In the final week, six temps were double-booked or unavailable, and we opened short-staffed on two peak days. Queue times passed 20 minutes, two colleagues skipped breaks, and we missed our daily sales target by 11%.

I owned the mistake with my manager, called in support from nearby stores, and reassigned floor roles by hour to protect tills and fitting rooms first. After the rush,…

As a retail supervisor, I once built our Christmas temp rota around an availability spreadsheet without confirming last-minute changes. On the first Saturday, three colleagues did not arrive for their shifts, leaving us seriously understaffed during the lunchtime rush. Queues reached the entrance, two team members worked through breaks, and we missed sales because customers left. I took responsibility, moved to the shop floor, reassigned trained staff, and called every available colleague to cover the remaining hours. After the weekend, I met w…