Creator
Kimi
Released
2025-09-05
Intelligence
23.5
Artificial Analysis Index
Coding
—
Artificial Analysis Index
In $/1M
$0.60
input tokens
Out $/1M
$2.50
output tokens
Blended $/1M
$1.07
3:1 blended
Speed
0
tokens / sec
Profile
License, openness, and modality — the governance layer.
License
Proprietary
non-commercial
Weights
Closed
API only
Modalities
Text
Parameters
1T
total
Kimi K2 0905 is the September update of Kimi K2 0711. It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32 billion active per forward pass. It supports long-context inference up to 256k tokens, extended from the previous 128k. This update improves agentic coding with higher accuracy and better generalization across scaffolds, and enhances frontend coding with more aesthetic and functional outputs for web, 3D, and related tasks. The model is trained with a novel stack incorporating the MuonClip optimizer for stable large-scale MoE training.
Capability profile
Category strength across 20 domains, via LLM Stats.
Benchmark breakdown
Independent evaluation scores, normalized to 0–100.