# Barbenheimer: Deploying the Model to a Hugging Face Space The RetrievalQA chain is set up and the documents are source - let's tie it together in a ChainLit application. `OPENAI_API_KEY` is added as a secret in the space. Check out the related Github [repo](https://github.com/PanoEvJ/LLMOps/tree/main/Week%201/Thursday)