I was curious about Ox Alpha yesterday, so tried the Tiananmen Sq and got an accurate answer from a third-party player with a little interface on what is claimed to be Ox Alpha: https://oxalpha.com/chat?q=what+happened+in+Tiananmen+square... (and a more detailed answer today when I asked again).

But nothing (at all) from asking GLM-5.3-Flash directly in the OpenRouter chat interface.