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Moonshot AI·Jul 16, 2026·K3·open source
Kimi K3
Kimi-K3 is a 2.8-trillion-parameter multimodal agentic model designed for frontier-level reasoning, complex coding, and long-horizon tasks. It utilizes a sophisticated Mixture-of-Experts (MoE) architecture with Kimi Delta Attention (KDA) to deliver high-performance capabilities within a 1-million-token context window.
featured on blogLLMMultimodalAgentic AIOpen Weights
overview
Kimi-K3 is a 2.8-trillion-parameter multimodal agentic model designed for frontier-level reasoning, complex coding, and long-horizon tasks. It utilizes a sophisticated Mixture-of-Experts (MoE) architecture with Kimi Delta Attention (KDA) to deliver high-performance capabilities within a 1-million-token context window.
key features
- 012.8T-parameter Sparse Mixture-of-Experts (MoE) architecture
- 02Native 1-million-token context window for long-horizon tasks
- 03Kimi Delta Attention (KDA) and Attention Residuals (AttnRes) for optimized scaling
- 04Advanced agentic coding capabilities with terminal tool orchestration
- 05Native multimodal architecture understanding text and images
- 06Native MXFP4 quantization for broad hardware compatibility
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