# Moonshot's Kimi K3 Lands as the Largest Open-Weight Model, With Weights Due July 27

The 2.8-trillion-parameter model ranks third on GDPval-AA v2 behind Claude Fable 5 Max and GPT-5.6 Sol Max, and first on Arena's Frontend Code evaluation.

- Published: 2026-07-22T05:47:02.310Z
- Canonical: https://polylog.news/ai/2026-07-22/moonshot-s-kimi-k3-lands-as-the-largest-open-weight-model-wi
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Fireworks AI (via Hacker News)](https://fireworks.ai/blog/kimik3-fable), [VentureBeat](https://venturebeat.com/technology/chinas-moonshot-ai-releases-chinas-moonshot-ai-releases-kimi-k3-the-largest-open-source-model-ever-rivaling-top-u-s-systems), [Tom's Hardware](https://www.tomshardware.com/tech-industry/artificial-intelligence/moonshot-releases-2-8-trillion-parameter-kimi-k3)

Moonshot AI's Kimi K3 is a 2.8-trillion-parameter model with native vision and a one-million-token context window, released as the largest open-weight model to date, with full weights scheduled for July 27. On GDPval-AA v2 it scored 1,687,…

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