Kimi K3 Open Weights Are Live: What Actually Shipped

Moonshot put the Kimi K3 weights on Hugging Face, and the largest open-weight model anyone has shipped is now a download. We read the actual repo instead of the press cycle. Here is what landed, what it costs you in hardware, and which widely repeated numbers do not survive contact with the file listing.

Kimi K3

Moonshot shipped Kimi K3, a 2.8T open-weight MoE that ranks first on Frontend Code Arena and costs a third of Claude Fable 5. Here is what it is, what it scores, and how to point your agent at it today.

Kimi K2.7 Code

Moonshot's Kimi K2.7 Code keeps coding quality steady while thinking about 30 percent less, a cost story for long agent runs. The catch: the benchmarks are all first-party. What to believe, and how to run it.

Moonshot Kimi K2.5

Moonshot AI has released Kimi K2.5, a 1 trillion parameter Mixture-of-Experts language model with 32 billion active parameters per request. The model uses 61 layers with 384 experts and sparse 8-expert activation, natively trained on roughly 15 trillion mixed vision and text tokens for a 256K context window. Kimi K2.5 outperforms GPT-5.2 on MMMU Pro (78.5%), BrowseComp (74.9%), and AIME 2025 (96.1%), and the Agent Swarm configuration reaches 50.2% on Humanity Last Exam at 76% lower cost than Claude Opus 4.5. Weights ship on Hugging Face under a Modified MIT license.