Moonshot's Kimi K3.1 Pro closes in on frontier models, open weights due Nov 4

AI/Kimi (Moonshot AI)/
Moonshot's Kimi K3.1 Pro closes in on frontier models, open weights due Nov 4
Source: Moonshot AI

Moonshot AI has released Kimi K3.1 Pro, a 3-trillion-class model with a one-million-token context window, built as a post-trained upgrade of K3. The company's tests put it at 65.7% on Terminal-Bench 4.0, ahead of GPT-6 Astra and just behind Claude Opus 5.5. It's live on Kimi's apps and API, with open weights promised by November 4. Cyber-related training data was stripped from the release.

3 sources

  1. 01SiliconANGLE — Moonshot AI launches new flagship Kimi K3.1 Pro model with 3T parameterssiliconangle.com
  2. 02Unite.AI — Moonshot AI Releases Kimi K3.1 Pro, First Model in New K3.1 Seriesunite.ai
  3. 03Let's Data Science — Moonshot Releases Kimi K3.1 Pro API, Open Weights Due Nov 4letsdatascience.com