OpenAI Built Gaming Bots That Can Work As a Team With Inhuman Precision

OpenAI said on Monday that its newest AI bots can hold their own as a team of five against human gamers at Dota 2, a multiplayer game popular in e-sports for its complexity and necessity for teamwork. The AI research lab is looking to take the bots to Dota 2 championship matches in August to compete against the pros. From a report: Dota 2 is a challenging game for AI to master simply because of the amount of decisions that the players have to juggle. While chess can end in fewer than 40 moves, and Go fewer than 150, OpenAI's Dota 2 bots make 20,000 moves over the course of a 45 minute game. While OpenAI showed last year that the bots could go one on one against a human professional in a curated snippet of the game, the company wasn't entirely sure that they could scale up to five against five. But the research team doesn't credit this breakthrough to a new technique or a lightbulb moment, rather a simple idea. "As long as the AI can explore, it will learn, given enough time," Greg Brockman, OpenAI's chief technology officer, told Quartz. The bots learn from self-play, meaning two bots playing each other and learning from each side's successes and failures. By using a huge stack of 256 graphics processing units (GPUs) with 128,000 processing cores, the researchers were able to speed up the AI's gameplay so that they learned from the equivalent of 180 years of gameplay for every day it trained.