I tried a little replication experiment after seeing that #Google AI misunderstands Polish letters. So, I asked #ChatGPT and #Preplexity the same thing: "państwa na ł" ("countries starting with ł"). The outcome?

👎 ChatGPT's output mirrored the original: confidently listed countries beginning with "L," not "Ł." It even claimed no such country exists (sorry 🇱🇻Łotwa). ChatGPT5 boasts a PhD level of intelligence, but most academics I know are literate enough to recognize a different language.