# SiliconANGLE — Moonshot AI launches new flagship Kim K3.1 Pro model with 3T parameters

- Company: SiliconANGLE (siliconangle.com)
- Announced: 2026-10-24T00:55:53+00:00
- Category: new-model
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://siliconangle.com/2026/10/23/moonshot-ai-launches-new-flagship-kim-k3-1-pro-model-with-3t-parameters/
- Record: https://forck.live/items/27328-moonshot-ai-launches-new-flagship-kim-k3-1-pro-model-with-3t-parameters
- Subject: Reporting
- Open weights: yes
- Models affected: Kim K3.1 Pro, Kimi K3, Claude Opus 5.5, GPT-6 Astra

Moonshot AI introduced Kim K3.1 Pro, a post-trained upgrade of the Kimi K3 algorithm it released in July, which the company says can outperform Claude Opus 5.5 and GPT-6 Astra on some tasks. Kimi K3 comprises 896 neural networks with 3 trillion parameters and activates only 16 at a time to minimize inference costs, and the new model presumably carries over its Kimi Delta Attention memory-saving feature. Moonshot AI says the post-training workflow used significantly more processing power than past projects and ran on an upgraded post-training stack with automated quality checks. Kim K3.1 Pro scored 92.7% on the BenchCAD 3D model coding benchmark, within four percentage points of Astra and Opus 5.5, and 65.7% on Terminal-Bench 4.0, more than 7% ahead of Astra but slightly behind Opus 5.5. It also outperformed both on OfficeQA Pro v2, a test of complex financial analysis, while trailing them on cybersecurity benchmarks because Moonshot AI says it deliberately removed cybersecurity-related information from the post-training dataset to address safety risks. The model is available through Moonshot AI's paid cloud services on launch, and the company plans to open-source its weights by Nov. 4.

## Evidence

Verbatim from https://siliconangle.com/2026/10/23/moonshot-ai-launches-new-flagship-kim-k3-1-pro-model-with-3t-parameters/:

> Kimi K3.1 Pro is available via Moonshot AI’s paid cloud services on launch. The company plans to open-source the model’s weights by Nov. 4.

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