I don't think that the answer given on https://www.emergentmind.com/posts/did-you-know-that-there-is-no-country-in-africa-that is actuly ChatGPT, they way it writes looks more like a small llm.
Also i was not able to replicate the answer with the prompt on this webpage
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GPT4:
There are several countries in Africa that start with the letter "K". They are:
1. Kenya
2. Kingdom of eSwatini (though it's primarily known as eSwatini, its official title does start with "Kingdom")
3. Kiribati (Note: While Kiribati is a country, it is not in Africa. It's in the central Pacific Ocean. I mention it only for the sake of completeness regarding countries starting with "K", but please be aware of its correct location.)
4. Comoros (Note: The English name doesn't start with a "K", but in Comorian it's called "Komori", which does.)
Among these, only Kenya is a widely recognized African country that starts with a "K".
GPT3:
Kenya is a country in Africa that starts with the letter "K."