Where did GPT-3.5 Go in ChatGPT? I was able to use it unlimited?

I was a free user and was able to use GPT-3.5 for as long as I wanted. I was able to use it for about 2 years. Now there is no option to switch back to GPT-3.5 and I get daily usage limits which is extremely frustrating.

2 Likes

Looks like 3.5 is API only now…

Which model should I use?

It will depend on your use case. Here are the most common reasons to use each model:

GPT-4o

    Our latest, fastest, highest intelligence model.

    128k context length (i.e. an average to longer novel).

    Text and image input / text and image output.*

    Audio input / output.**

GPT-4o mini

    Our lightest-weight intelligence model.

    128k context length (i.e. an average to longer novel).

    Text and image input / text and image output.*

    Audio input / output.**

    Limitation: This model does not have access to the advanced tools that GPT-4o has.

GPT-4

    Our previous high intelligence model.

    128k context length (i.e. an average to longer novel).

    Text and image input / text and image output.*

    Audio input / output.**

GPT-3.5 (API only)

    Fast model for the simplest routine tasks.

    16k context length (i.e. 1-2 dozen articles or a short story / novella).

    Text input / text output.

    Audio input / output.**

https://help.openai.com/en/articles/7102672-how-can-i-access-gpt-4-gpt-4-turbo-gpt-4o-and-gpt-4o-mini