Why does ChatGPT keep removing model choice and rerouting people?

Between GPT-5.1 being retired from ChatGPT in March and chats being auto-mapped to newer models, it feels like users have less and less control over consistency. At the same time, GPT-5.3 Instant mini just rolled out in ChatGPT. Are we actually getting better UX, or just more hidden model switching? submitted by /u/Alpertayfur <a href="https://www.reddit.com/r/ChatGP