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Very wrong. The first time most people here probably heard about OpenAI back in 2017 or so was their DotA 2 bot.

> OpenAI has never done anything except conversational agents.

Tell me you haven't been following this field without telling me you haven't been following this field[0][1][2]?

They definitely have game-playing AI expertise, though: https://noambrown.github.io/

No, they started without conversation and only reinforcement learning on games, directly comparable to DeepMind.

“In the summer of 2018, simply training OpenAI's Dota 2 bots required renting 128,000 CPUs and 256 GPUs from Google for multiple weeks.”