---
title: "Moonshot releases Kimi K3.1 Pro, a 2.8T-parameter MoE model"
url: https://www.parallelquant.com/posts/moonshot-releases-kimi-k3-1-pro-a-2-8t-parameter-moe-model-1bd70e
source_name: "MarkTechPost"
source_url: https://www.marktechpost.com/2026/10/23/moonshot-ai-kimi-k3-1-pro-open-weight-model/
published: 2026-10-23T22:52:40.000Z
topics: ["llms", "open source"]
publisher: "Parallel Quant"
---

# Moonshot releases Kimi K3.1 Pro, a 2.8T-parameter MoE model

*2026-10-23 · Source: [MarkTechPost](https://www.marktechpost.com/2026/10/23/moonshot-ai-kimi-k3-1-pro-open-weight-model/)*

Moonshot AI released Kimi K3.1 Pro, a mixture-of-experts model with 2.8 trillion total and 104 billion active parameters and a 1M-token context window. It scores 65.7% on Terminal-Bench 4.0 and costs $2 input / $10 output per million tokens. Open weights are promised by November 4, 2026.

**Why it matters:** Independent rankings put it at 55 on the Artificial Analysis Intelligence Index, an 11-point jump over its predecessor and within a few points of the top proprietary models. If the weights ship on schedule, the open-versus-closed gap narrows to roughly three points, adding price pressure on Western labs. The release also continues the run of strong Chinese open-weight models alongside DeepSeek and MiniMax.

**Topics:** llms, open source

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Read the original: https://www.marktechpost.com/2026/10/23/moonshot-ai-kimi-k3-1-pro-open-weight-model/
Canonical: https://www.parallelquant.com/posts/moonshot-releases-kimi-k3-1-pro-a-2-8t-parameter-moe-model-1bd70e
Published by Parallel Quant — https://www.parallelquant.com