The community members discuss whether an API key is required to use npx create llama with GPT 4.0. One community member states that an API key is not needed, but the LLM and embedding model will need to be changed if not using OpenAI. Other community members provide links to the Llama Index documentation for LLM and embedding models, and suggest trying the Python backend if the TypeScript backend does not support the desired non-OpenAI models. The community members seem to be exploring options to use Llama without an OpenAI API key.