# LeCun Calls xAI a 'Failure' and Warns of a Lab Bubble as He Exits Meta

The retiring Meta chief AI scientist points to cofounder departures and rented-out computing capacity as evidence that one of the better-funded labs is falling behind.

- Published: 2026-06-22T10:48:41.833Z
- Canonical: https://polylog.news/ai/2026-06-22/lecun-calls-xai-a-failure-and-warns-of-a-lab-bubble-as-he-ex
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news), [CNBC](https://www.cnbc.com/2026/06/18/yann-lecun-elon-musk-xai-failure-ai-labs-bubble-risk.html), [Gizmodo](https://gizmodo.com/yann-lecun-calls-xai-a-failure-reignites-feud-with-elon-musk-2000773710)

Yann LeCun, the departing Meta chief AI scientist, called Elon Musk's xAI "kind of a failure" and linked the judgment to talent. He argued that all of xAI's cofounders other than Musk have left, and that Musk's conduct toward earlier teams…

This story is for subscribers. Read it in full at https://polylog.news/ai/2026-06-22/lecun-calls-xai-a-failure-and-warns-of-a-lab-bubble-as-he-ex (subscription information: https://polylog.news/pricing).