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To follow today's @OpenAI / @OGesports event:
- I'll be live-tweeting in this thread👇
- @FakePsyho will be live-tweeting in the following thread:
- Watch our livestream: twitch.tv/openai!
Official event hashtag: #OpenAIFive
- I'll be live-tweeting in this thread👇
- @FakePsyho will be live-tweeting in the following thread:
- Watch our livestream: twitch.tv/openai!
Official event hashtag: #OpenAIFive
Team @OGesports getting warmed up. 
Doors about to open!!
Less than 30 mins remaining...
Room starting to fill up. Pushing back 15 mins (new start time 11:45) as the crowd trickles in.
Just gave my opening remarks! David and Brooke from the team on the pre-game analyst panel.
@Blitz_DotA talking about his first experience playing OpenAI Five. He casted our earliest showmatch, and then we invited him to play. Said he was very impressed.
Talking about how Five plays the game.
Brooke, pointing out why it’s a big deal that AI can learn to play Dota. The human way: watch others play, read tooltips, etc. The AI way: try things out and see what works.
Important property of the latter: can use a different task just as well.
Important property of the latter: can use a different task just as well.
@PurgeGamers talks about what people learned from our Dota 1v1 bot.
Also discussion on how we upgrade to new path versions — just update the Dota version and keep training, transferring out existing game knowledge to the new patch.
Brooke: we played 3 pro/semi-pro teams in the past few months. Will talk about how those went as we go.
Excited to play @OGesports (very soon!)
@Blitz_DotA says this might be a bad time to challenge OG since they’re once again starting to peak, with the return of Ana.
Team OG takes the stage!!!
Game rules — similar to our TI 2018 rules.
Murmur runs through the crowd as people realize that Five and OG will be drafting!! Some deep strategy in drafting.
First picks: humans pick earthshaker, bots pick sniper and gyrocopter.
Drafting continues...
Some more picks
Final picks are in! OpenAI Five thinks it has a 67.6% chance of winning — but that’d be accurate only if it were playing a copy of itself. Hard to know be the world champion human team :)
Game 1 about to begin!
A visualization of what OpenAI Five is planning to do.
First blood to OpenAI!
Humans kill crystal maiden. 1-1 kills, gold about even.
Even trade slightly favoring OG, now 2-2. Casters speculating on OG’s strategy.
Humans get two kills, 3-5 in favor of humans, up by 1k net worth.
Humans try to spring a trap; five reverses it and evens up the game at 6-6, even net worth
Still even — 7-7. Neck and neck!
Casters say that humans keep cutting the creep wave, but Five is responding appropriately.
10 mins in, 8-9 kills in favor of humans, bots up by 1k net worth!
Teamfight where crystal maiden hit almost zero health. Bots turn around the teamfight, now 12-11 and bots up 3k
Fun play where bot sniper and human riki kill each other exactly.
Humans closing the gap — now 15-16 and bots up by 1k net worth.
Bots do something humans don’t do: gyro is killed and immediately buys back even though the base isn’t under attack.
We see this happen in test games all the time: the bots buy back, the humans laugh, and then the humans lose. Hard to know if it’ll happen here too...
Big team fight. Human team loses 5 heroes. Bots lose no one.
Bots up 7k gold, at 24-20 kills.
Humans do an amazing play and save their Riki.
Casters now talking about “the power of early game buybacks”.
OG is teamwiped. Five is up by 8k, all heroes alive.
Now 31-23. Five up by 10k gold. Here’s a viz of what Five is thinking.
Humans just took Roshan.
Casters saying that Five knew humans were taking Roshan, but decided it was more important to take map objectives.
Humans trying to set a trap by hiding in the trees...
32-24, bots up by 10k
Team fight, humans lose 3 heroes, Five loses one.
Casters day Dota is too complicated to have a perfect game. Have seen some beautiful plays.
Another bot push, humans manage to defend. Game not over yet! Death prophet is down with no buyback, humans may make a comeback.
Casters talk about how Five knew that Viper couldn’t be in a location for a certain period of time, so it was worth pursuing a certain fight.
All heroes are alive. Bots up 14k gold, 41-27 kills.
Another teamfight. Human lose four heroes, bots lose only Crystal Maiden.
OpenAI Five wins game 1 versus @OGesports!!!!! First AI to ever defeat a professional esports team on a public livestream.
Wow, that was an intense game. So proud of the team. No matter what happens game 2 (and possibly 3) this is an amazing accomplishment!!!
Person next to me comments on two aspects of Five:
- Early game buybacks. Not something pros usually do, but it is a good insight: you get the money back by farming.
- Dynamic role switching. Also not something that pros do — usually they pool on one hero chosen at beginning.
- Early game buybacks. Not something pros usually do, but it is a good insight: you get the money back by farming.
- Dynamic role switching. Also not something that pros do — usually they pool on one hero chosen at beginning.
“In eight years of Dota I’ve never seen this.”
