What is the answer to the WSJ Crossword clue "Type of AI at the heart of ChatGPT" from September 29, 2026?

Crossword clue

“Type of AI at the heart of ChatGPT”

This clue appeared as 28-Across in the WSJ Crossword on Tuesday, September 29, 2026. The answer has 3 letters.

Answer · 3 lettersFirst appearance

LLM

Letters3

Starts withL

Ends withM

Vowels0

Where this clue has appeared

WSJ Crossword
Sep 29, 20263 letters→

About this clue

The clue “Type of AI at the heart of ChatGPT” ran in the WSJ Crossword on September 29, 2026 as 28-Across. Its answer is a 3-letter word that starts with L and ends with M.

See every answer from the puzzle on the WSJ Crossword page for September 29, 2026, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

1AHieroglyphic reptile3 letters 4AOne Direction, for one7 letters 11AKid’s call3 letters 14ASkill practiced on dummies, briefly3 letters 15APredict7 letters 16A“Still thinking...”3 letters 17ARetro bath fixture11 letters 19A“And how!”3 letters

FAQ

What is the answer to the “Type of AI at the heart of ChatGPT” clue?+

The answer is LLM (3 letters), from the WSJ Crossword of September 29, 2026.

Where has this clue appeared?+

We have seen it 1 time in the WSJ Crossword.

How do I find other WSJ Crossword answers?+

Open the full list of answers for September 29, 2026, or browse every date on the WSJ Crossword hub.