[Jach]

I don't remember where I read it but in some earlier versions of AlphaGo they tried a komi of 6.5 and black ended up winning more often. That indicates the correct komi value is 7, but since Go doesn't have ties, you have to pick which side you want to favor to break the tie. (White seems reasonable.)

[conistonwater]

That doesn't sound right because in Chinese rules, which is what AG uses, komi only changes in steps of two. Are you sure about 6.5? Could it be 5.5?

[Jach]

Well in Japanese rules the komi is 6.5 so that's the alternative that tends to come up. Some quick searching I found a transcript from one of the games where DeepMind said 7.5 slightly favors white but they didn't say anything about 6.5 or 5.5, while a random comment from r/baduk claims that pro game analysis shows 6.5 slightly favors black and 7.5 slightly favors white.

[wetpaws]

I guess they should then randomize komi so any player would have 50/50 chance of getting a small edge.