On the possibility of antigravity

For some reason, I assume antigravity between matter and antimatter, so I check from time to time to see if there is a test that can confirm or disprove this. I have previously asked ChatGPT in the Chrome browser about this, but got no useful answer, because it just kept saying that, as far as we know, the properties of matter and antimatter are identical in all but charge, but gave no information about specific tests. Now I have done some more research and asked Bing about the gravitational behaviour of antimatter. He gave a very good answer, by which I mean he gave his source, so I could check his conclusions. Well, there was a problem with that conclusion, because the original source did not confirm the conclusion of the Bing AI, that there is no antigravity. The reference provided by the AI is based on a Nature article¹ promoted by the SYFY channel² in early 2022, a summary of which can be found in Hungarian on the iPon website as well. The article’s topic is the comparison of matter and antimatter, which is one of the key questions in physics at the moment, because there is no theoretical explanation for the "baryon asymmetry", i.e., the predominance of matter in the universe.

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¹ See: A 16-parts-per-trillion measurement of the antiproton-to-proton charge–mass ratio | Nature

² See: Bad Astronomy | Matter and antimatter are affected by gravity the same amount | SYFY WIRE

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