Moonshot AI launches 3‑trillion‑parameter Kimi K3.1 Pro with weights due Nov 4

Moonshot AI released Kimi K3.1 Pro, a 3‑trillion‑parameter open‑weight model with a 1‑million‑token context window and a high‑speed variant that is 2‑3× faster. The model scores 55 on the Artificial Analysis Intelligence Index, an 11‑point gain that places it fourth behind three Anthropic and Meta models, and it nearly matches Claude Opus 5.5 on a coding test. Moonshot will publish the model’s weights by 4 November 2026 and has removed hacking‑related training data to limit misuse.

Why it matters: Developers can now run a top‑tier, open‑weight LLM locally and customize it, with full weights becoming available soon.

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