Challenge Overview


Spotify is an online music streaming service with over 140 million active users and over 30 million tracks. One of its popular features is the ability to create playlists, and the service currently hosts over 2 billion playlists.

This year's challenge focuses on music recommendation, specifically the challenge of automatic playlist continuation. By suggesting appropriate songs to add to a playlist, a Recommender System can increase user engagement by making playlist creation easier, as well as extending listening beyond the end of existing playlists.

General info

The RecSys Challenge 2018 is organized by Spotify, The University of Massachusetts, Amherst, and Johannes Kepler University, Linz. For information about the ACM RecSys Challenge Workshop, the Challenge timeline, and information on paper submission and selection criteria, be sure to visit the main ACM RecSys Challenge page.

The task

The goal of the challenge is to develop a system for the task of automatic playlist continuation. Given a set of playlist features, participants’ systems shall generate a list of recommended tracks that can be added to that playlist, thereby ‘continuing’ the playlist.

The dataset

As part of this challenge, Spotify has released the Million Playlist Dataset. It comprises a set of 1,000,000 playlists that have been created by Spotify users, and includes playlist titles, track listings and other metadata. In order to access the Million Playlist Dataset you will need to register for the challenge and agree to the license terms. Once you've registered you can download the data from the the dataset page.

License agreement

You can only participate in the challenge and download the Million Playlist Dataset if you sign the license agreement. The complete terms and conditions can be found on the license agreement page.

More information

More information about the challenge details regarding evaluation, metrics, submission format, etc. can be found on the challenge rules page. Detailed information about the terms and conditions of the challenge can be found in the Terms and Conditions. For information on the Million Playlist Dataset visit the dataset page. See the official RecSys Challenge website for information about the challenge timeline, workshop, paper submission and selection.

Details about participation


Challenge Organizers


Spotify Organizers