GPT4 is definitively the future, but GPT3.5 is the present :-).
In addition to being more expensive, GPT4 is a lot slower. For most casual things I use gpt3 and upgrade to GPT4 as needed. I've actually had a couple of days where I spent > $1 on GPT4. It's hard to do with every day chat, but easy to do when you get it to look/improve large amounts of code.
This is all from the API/CLI not the web interface.
In addition to being more expensive, GPT4 is a lot slower. For most casual things I use gpt3 and upgrade to GPT4 as needed. I've actually had a couple of days where I spent > $1 on GPT4. It's hard to do with every day chat, but easy to do when you get it to look/improve large amounts of code.
This is all from the API/CLI not the web interface.