Post by Yuchen Jin on X
Yuchen Jin@Yuchenj_UW
XKimi K3 weights are open now.
It is the largest open-weight model so far (2.8T parameters). It's only slightly behind Claude Fable 5 Max and GPT-5.6 Sol Max.
Pretty excited about this model, and again, a Muon victory!

691 likes21 repliesPosted Jul 27, 2026