What is the API Key field for in the Tabnine Hub? May 03, 2022 09:37 Updated Legacy users of Tabnine Pro were required to enter their API key to register their license when signing up and logging in. Related articles Do I still need an API key to sign up and log in? What happened to Tabnine Pro? What happens when 'Deep Completions Cloud' and 'Deep Completions Local' are both enabled? Which code editors are officially supported by Tabnine? How can I know Tabnine is installed and running?