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AI Obliterates Semi-Professional Dota 2 Players In A Game

08 August, 2018, 10:22 | Author: Rafael Roberts
  • Watch OpenAI's Dota 2 bots square off against five top players live on Twitch today

The OpenAI Five bots will take on current Dota 2 pros at the event. From a recap of the competition via The Verge, "The OpenAI Five triumphed in convincing fashion in the first game, not allowing the human players to even destroy one of their defensive towers". If the the OpenAI Five are victorious, they not only join the pantheon of machines that have publicly beaten humans at games (Deep Blue, Watson, AlphaGo), but will have done so in a game that balances several real-time interactions at once. The team of bots calculated a 2.9% chance of winning before the start of the game based on its heroes' lineup. Next step, is The International 2018 (T18), which is Valve's own Dota 2 major and considered one of the biggest e-sports tournaments in the world.

Just recently, OpenAI showed off that it's system was intelligent enough to face off against human opposition, learning and exploring the many complexities of Dota 2 at a rapid rate compared to the human mind. The characters Open AI played were selected by Twitch users, giving Team Human a slight advantage.

According to Greg Brockman, a co-founder of OpenAI, the company is working on designing bots that can beat elite human gamers because the simulated battle experience in Dota is so multi-faceted that it begins to approximate the chaos of the real world. "And finally, in a game three played purely for pride, the humans managed to squeeze out a win". Reward functions were identified, where the bots score points when they accomplish a certain task, but other than that they're basically set loose to play themselves. The list of handicaps included the ability to pick only 18 of the 115 available heroes in the pool, while Team Human was given freedom to use any hero of their choosing.


OpenAI Five's latest win against its most formidable adversaries yet ultimately demonstrates the vast progress the bots have made over the past few months.

OpenAI Five will take on an active professional team during the global main event in August 2018.

The blog added, "We've increased the reaction time of OpenAI Five from 80ms to 200ms".

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