Moonshot AI releases Kimi K2, a 1-trillion-parameter open-weights agentic model
Beijing-based Moonshot AI open-sourced Kimi K2, a 1T-parameter mixture-of-experts model (32B active) optimized for agentic tasks and coding, among the strongest open-weight non-reasoning models at release.
Key facts
- Released 11 July 2025
- 1 trillion total parameters, 32B activated
- Trained with the MuonClip optimizer on 15.5T tokens
- Released under a modified MIT license
What happened
Moonshot released open weights for a trillion-parameter model focused on tool use and coding.
Why it matters
Part of a 2025 wave (DeepSeek, Qwen, Kimi, GLM) that made Chinese labs the leaders in open-weight models.
Changelog
- 2026-09-29: created
Related events
Sources (2)
id: 2025-07-11-kimi-k2 · updated 2026-09-29 · open in the interactive timeline