# Kimi K3 paper author, 17, leaves Moonshot AI

> Chen Guangyu, 17, lead author of the Kimi K3 paper, confirmed he left Moonshot AI.

*Chen Guangyu, a lead author of the "Attention Residuals" paper, says he is moving to the San Francisco Bay Area and has turned down Anthropic.*

By Bez · FeaturedDaily
Canonical: https://featureddaily.com/news/kimi-k3-paper-author-17-leaves-moonshot-ai

**What happened:** Chen Guangyu, 17, confirmed on 18 October that he has left Moonshot AI, according to [Seoul Economic Daily](https://en.sedaily.com/international/2026/10/18/teen-prodigy-behind-kimi-breakthrough-leaves-moonshot-ai).

**The numbers:** Chen is one of three equal-contribution first authors of "Attention Residuals". That is the paper behind Moonshot's Kimi K3.

**Why it matters:** One of the three lead authors of the Kimi K3 research is no longer at the company.

**The details:** Chen is relocating to the San Francisco Bay Area.

**In their words:** Chen addressed talk of a move to Anthropic. He said joining Anthropic "is not happening."

**The catch:** Where Chen will work next is unconfirmed. The report does not say what he plans to do in the Bay Area.

**The context:** The details here come from a secondary summary of the Seoul Economic Daily report, not the full article.

**What's next:** Chen's next role has not been announced.

## Key takeaways

- Chen Guangyu, 17, has left Moonshot AI.
- He co-led the paper behind Kimi K3.
- His next employer is unconfirmed.

## Sources

- [Teen prodigy behind Kimi breakthrough leaves Moonshot AI](https://en.sedaily.com/international/2026/10/18/teen-prodigy-behind-kimi-breakthrough-leaves-moonshot-ai) — Seoul Economic Daily, 2026-10-18