WSJ WSJCROSSWORDSOLVER.COM Search ← All September 29 2026 answers Crossword Clue · 28 Across “Type of AI at the heart of ChatGPT” Answer LLM 3 Letters Across September 29 2026 Puzzle View full puzzle answers → More from this puzzle 29AWee annoyance430AMississippi symbols1331DChoose332DThat group’s533DHard-to-find cards, to collectors534DPunk subgenre335AChart inspiration336ACommon croissant filler3 ← 27A: SSN, say 29A: Wee annoyance →