University of Michigan researchers can access a compilation of tweets known as the “Twitter Decahose”, a 10% sample of all tweets, without charge. MIDAS (opens in new tab), CSCAR (opens in new tab) and ARC (opens in new tab) together manage and support the use of this data repository, including the historical archive of Decahose tweets and ongoing collection. Learn about requesting access (opens in new tab) from MIDAS. This user guide (opens in new tab) describes how to access and use the Twitter Decahose using PySpark. Check out this query tool (opens in new tab) for Twitter Decahose data availability at the University of Michigan.