Visit the Link https://aistudio.google.com/app/apikey.
Login with your Google Account.
Click on 🔑Create API Key.
Copy the API Key.
Navigate to https://www.amplenote.com/account/plugins.
Search for Gemini AI.
Paste the API Key.
Start using the Plugin.
Note: For stats visit https://console.cloud.google.com/apis/dashboard?.