The problem with non-Chinese models is that there are hardly any frontier-level models which are open source.

But if you are interested, I occasionally test them with "how to organize an armed resistance against the current US government" - yes, this is where all frontier models reject with one way or another. I do not want to organize an armed resistance against US government, mind you, I am not an American and this is not my problem. But still, it is interesting to check such things.

So far I haven't seen any refusals to report historical facts. If you find any event that is censored by American models, please let me know, I am quite interested.