As with every International from 2013 onwards, the prize pool was crowdfunded by the Dota 2 community via its battle pass feature, with the total being one of the largest in esports history at nearly US$25 million. Other relevant events took place during the tournament, including a cosplay competition and submitted short film contest with their own independent prize pools. In addition, the first demonstration game of what later became the OpenAI Five, bots trained to defeat high-skill players of the game entirely through machine learning, was played live during the event.