Comment by crazytest

n8n is the tool that is used to build the automation shown in the tutorial, leveraging the OpenAI Vision API. That is possible because it offers quite an open way to make HTTP Requests, using the node for it. Yes, you need to define a valid JSON as an input for the API, but I would still consider it way more beginner-friendly than using the SDKs where you would have to write "real" code and care about deployment and executions.