[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.