Story 5 of 9 · 17 July 2026

Moonshot AI launches Kimi K3, a 2.8 trillion parameter open weight model

What happened

Moonshot AI announced Kimi K3, a new large language model built with 2.8 trillion parameters, calling it set to become the largest open weight model once the weights go public on July 27. SiliconANGLE reports that benchmarks show Kimi K3 outperforms the best models from OpenAI and Anthropic in some applications.

Confirmed details

Fortune reports that with minimal human oversight, the model can sustain long engineering sessions, navigate large repositories, and run terminal tools, and describes it as Moonshot AI's newest open source coding model.