> if you're using API pay-as-you-go access, unless you wrote the very tools you use with that API, you're most likely using gpt-4, and not gpt-4-0314.

Do you know of any alternative ChatGPT UIs like chatbotui.com or typingmind.com that let you specify the model gpt-4-0314 ?

This feature alone would be enough for me to switch.