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Moonshot AI Releases Kimi K3.1 Pro Open-Weight Multimodal Agentic Model

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Moonshot AI published Kimi K3.1 Pro on Hugging Face, an open-weight, natively multimodal agentic model with a 1-million-token context window. The 2.8T-parameter mixture-of-experts model activates 104B parameters and was post-trained from Kimi K3 with large-scale joint reinforcement learning. Vendor-reported benchmarks show gains in coding, 3D creation, financial research and factual accuracy, with results compared against Claude, GPT and DeepSeek models.

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This brief uses automated source/date checks and AI-assisted summarization of an official source. Vendor claims are not independent YYSI test results. Check the original announcement before relying on an important detail.

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