Consider Removing Dependency on OpenAI's API for Search and Retrieval Plugin.

[DarkIlluminatus]

Upon reviewing the implementation, it appears that the existing plugins model in ChatGPT is capable of performing the functions currently being handled by the ada model from OpenAI's API. I believe that the requirement for an OpenAI API key is not necessary.

I want to highlight the importance of keeping the project open-source and accessible to the community. Requiring an API key from a third-party service limits the accessibility of the software and introduces proprietary elements into an otherwise open-source project.

Given these considerations, I recommend fully removing the dependency on OpenAI's API and ada model. This will maintain the open-source nature of the project and ensure that it remains accessible to a wide range of users, without limiting accessibility exclusively to those with disposable income.