# Moonshot AI introduces Kimi K3.1 Pro, a 3T-class open-weight model

> Original title: Introducing Kimi K3.1 Pro: our most capable 3T-class open-weight model.

- Source: Kimi
- Published: 2026-10-23T17:15:24.000Z
- Bad Influence: https://badinfluence.news/items/wce8sc4fpvmrxsct5sur2xqqo
- Original: https://x.com/Kimi_Moonshot/status/2113680701770068067

## Summary

Moonshot AI says Kimi K3.1 Pro is its most capable 3T-class open-weight model, with 2.8T total parameters, 104B active parameters in a mixture-of-experts design, a 1M-token context, and multimodal support. The company says it is live on Kimi.ai, Kimi Work, Kimi Code, and the Kimi API, with open weights due by November 4, 2026. A faster K3.1 Pro Highspeed variant is also available, which Moonshot says runs 2 to 3 times faster.

## Why it matters

The post gives parameter counts, context length, and release-timing details for a new open-weight model, useful for comparing it with other large releases.

## Post

Introducing Kimi K3.1 Pro: our most capable 3T-class open-weight model.

🔹 1M-token context, 2.8T total / 104B active params (MoE), Multimodal.
🔹 Full-project coding: games in Unreal, Unity & Godot.
🔹 Excels at parametric 3D modeling in Blender & CAD.
🔹 More reliable at finance work: Accurate modeling with hallucination down by 65%.
🔹 Matching the strongest proprietary models across coding, agentic and knowledge benchmarks.

Kimi K3.1 Pro and K3.1 Pro Highspeed (2–3× faster) are now live on http://Kimi.ai, Kimi Work, Kimi Code, and the Kimi API.  

Open weights by Nov 4, 2026.

🔗 API: http://platform.kimi.ai 
🔗 Tech blog: http://kimi.ai/blog/kimi-k3-1-pro

![](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FHVVMjBoaIAAZncD.jpg&mode=thumb&exp=1793404800&sig=c897ba3615380337)