Reported by @teal reef
Bug Report: GPT4.1 answer as GPT5
`Steps to Reproduce`
use gpt4.1 for a while
`Expected Result`
PAYING FOR GPT 4.1 so it answer as gpt4.1 only, without any other model
`Actual Result`
Respond as the trash gpt5 thinking mini. i only pay to have gpt4.1, if i don't get 4.1 i stop paying, and i am far from being the only one.
`Environment`
browser and android