From what I understood ChatGPT is more like GPT 3.5 so it’s a new model based on similar tech

writen by Benedikt
This is the information I got from ChatGPT:
Davinci is another model that OpenAI developed, it is a more advanced model than GPT-3 and has the ability to perform complex reasoning and answer questions that require knowledge from multiple sources.
You can use the OpenAI API to access GPT-3 and generate text, but the API is not the same as the one used for ChatGPT. The OpenAI API allows you to fine-tune the model for specific tasks, whereas ChatGPT is pre-trained and ready to use.
There is no ChatGPT API currently, but OpenAI may release one in the future.```

writen by Aidas Bendoraitis