Automated End-to-End Fine-Tuning of OpenAI Models with Google Drive Integration

1. How it Works
   This n8n workflow automates fine-tuning OpenAI models through these key steps:
   Manual Trigger**:
   Starts with the "When clicking ‘Test workflow’" event to initiate the process.
   Downloads a .jsonl file from Google Drive
   Upload to OpenAI**:
   Uploads the .jsonl file to OpenAI via the "Upload File" node (with purpose "fine-tune").
   Create Fine-tuning Job**:
   Sends a POST request to the endpoint https://api.openai.com/v1/fine_tuning/jobs with:
   {
   "training_file": "{{ $json.id }}",
   "model": "gpt-4o-mini-2024-07-18"
   }
   OpenAI automatically starts training the model based on the provided file.
   Interaction with the Trained Model**:
   An "AI Agent" uses the custom model (e.g., ft:gpt-4o-mini-2024-07-18:n3w-italia::XXXX7B) to respond to chat messages.

2. Set up Steps
   To configure the workflow:
   Prepare the Training File:
   Create a .jsonl file following the specified syntax (e.g., travel assistant Q/A examples).
   Upload it to Google Drive and update the ID in the "Google Drive" node.

Configure Credentials:
Google Drive: Connect an account via OAuth2 (googleDriveOAuth2Api).
OpenAI: Add your API key in the "OpenAI Chat Model" and "Upload File" nodes.

Customize the Model:
In the "OpenAI Chat Model" node, specify the name of your fine-tuned model (e.g., ft:gpt-4o-mini-...).
Update the HTTP request body (Create Fine-tuning Job) if needed (e.g., a different base model).

Start the Workflow:
Use the manual trigger ("Test workflow") to begin the upload and training process.
Test the model via the "Chat Trigger" (chat messages).

Integrated Documentation:
Follow the instructions in the Sticky Notes to:
Properly format the .jsonl (Step 1).
Monitor progress on OpenAI (Step 2, link: https://platform.openai.com/finetune/).

Note: Ensure the .jsonl file adheres to OpenAI’s required structure and that credentials are valid.