API documentation on davinci-2

I am looking for API documentation for “davinci-2” , which is default for chatGPT.
Thanks in advance for your help.

Welcome to the Forum! The default for ChatGPT is currently GPT-3.5-turbo, documentation for which can be found here OpenAI Platform Please note that ChatGPT is not the same as the API GPT and although ChatGPT used the GPT API engine, it differs in that it is pre-configured and has guidance rails that are not present in the API