The short version

Yann LeCun predicted on February 4, 2023: “Auto-Regressive LLMs are doomed. They cannot be made factual and non-toxic.” Verdict: Missed it. LeCun called autoregressive LLMs 'doomed' in early 2023. Three years later GPT-5, Claude 4, and Gemini 3 — all autoregressive — power most production AI. Hallucinations dropped sharply with RLHF and tool use.

Prediction by

Yann LeCun

On February 4, 2023

“Auto-Regressive LLMs are doomed. They cannot be made factual and non-toxic.”

Follow-up

LeCun called autoregressive LLMs 'doomed' in early 2023. Three years later GPT-5, Claude 4, and Gemini 3 — all autoregressive — power most production AI. Hallucinations dropped sharply with RLHF and tool use.

From the High Caliber AI network — see the AI for PR module in the course.