I can't use playground or API in chat mode with GPT-3.5-turbo

This is my first day paying for the openAI api, but I cannot use the chat mode of GPT-3.5-turbo in the playground or API.
This is the error Message.

Hi and welcome to the Developer Forum!

Not sure what you mean by “paying for the API” do you mean ChatGPT Plus? the $20/mo service? If so then that is NOT the API, that is a different service, to use the API you need to add a credit card to your API billing details, or add credit to your account depending on what kind of account you have.

Please note that this forum is not for account assistance, for that you should use help.openai.com

I add credit to my account to my API billing . I can use the completion mode. But where I change the mode to “chat” and GPT-3.5-turbo" model. It will be error.

please go to this address and try it OpenAI Platform

yea, that’s why I included a link to the playground, it should default to 3.5-turbo in chat mode, you can get that exact error if you use some of the old documentation links to examples.

I change all kinds of models : gpt-3.5-turbo-0301,gpt-3.5-turbo,gpt-4. It’s show same error:
This is not a chat model and thus not supported in the v1/chat/completions endpoint. Did you mean to use v1/completions?

I try to use my friend APK to have a test. It works.
Maybe the reason is I pay for it in the first day.