Up to now, Polylang users had to manually translate all the content of their website. As announced by Lingotek, you can now use translation services (both machine and professional translations), directly from WordPress + Polylang. To make this happen, you will need to install Lingotek Translation, a free WordPress plugin available in the WordPress repository. Machine translation is free up to 100,000 characters.
I hope that you will enjoy this new possibility.