Quick start video
Localization Game is a plugin that allows you to quickly translate strings in your game using the Google Translate service or Yandex Translate via REST requests. The plugin is designed to work in the editor and will not be included in the build of the game. The plugin works in conjunction with the "Localization Dashboard" localization system.
For the plugin to work, you need to register in Google Cloud, create a project in Google Cloud and get an API key. More details in the documentation.
Cloud Translation pricing
For information about the price and obtaining API keys for translating through Yandex, see the documentation.