# Moonshot AI releases Kimi K3.1 Pro, a 2.8T-parameter model with 1M context

> Original title: Moonshot AI Releases Kimi K3.1 Pro: A 2.8T Total/104B Active Params (MoE) Model with 1M Context

- Source: MarkTechPost
- Published: 2026-10-23T22:52:40.000Z
- Bad Influence: https://badinfluence.news/items/vnjzxqyugorm82ml5hbh7lu3b
- Original: https://www.marktechpost.com/2026/10/23/moonshot-ai-kimi-k3-1-pro-open-weight-model/

## Summary

Moonshot AI released Kimi K3.1 Pro, a 2.8 trillion total parameter MoE model with 104 billion active parameters and a 1-million-token context window, available now through the Kimi API. Its open weights are expected in November 2026. Moonshot reports strong self-reported coding results, including 65.7% on Terminal-Bench 4.0 and 51.7 on SWE-Marathon, but scores 38.1 on Terminal-Bench Science against 68.1 for GPT-6 Astra.