Kimi K2 Base: Benchmarks, Pricing & Context Window
Kimi K2 Base is a language model from MoonshotAI, released in July 2025.
Kimi K2 base model is a state-of-the-art mixture-of-experts (MoE) language model with 32 billion activated parameters and 1 trillion total parameters. Trained on 15.5 trillion tokens with the MuonClip optimizer, this is the foundation
Kimi K2 Base API
API access coming soon
Kimi K2 Base will be available through our gateway shortly.
Kimi K2 Base examples
Recent arena outputs from Kimi K2 Base, picked from the highest-ranked matchups.
Kimi K2 Base license
Kimi K2 Base is released under the MIT license, which permits commercial use, has 1.0T parameters.
- License
- MIT
- Commercial use allowed
- Parameters
- 1.0T
MIT License - allows commercial use
FAQ
Common questions about Kimi K2 Base.