Technology & Science

China’s Moonshot Releases 2.8-Trillion-Parameter Kimi K3, First Open-Weight Model to Top U.S. Benchmarks

On 17 July 2026 Beijing-based Moonshot AI unveiled Kimi K3, a 2.8-trillion-parameter open-weight language model that immediately ranked #1 on Arena’s front-end-coding leaderboard, shaking U.S. tech stocks and sparking regulatory debate in Washington.

By Underlines Team

Focusing Facts

  1. Kimi K3’s parameter count: 2.8 trillion, released 17 July 2026; scheduled full open-weight download availability on 27 July 2026.
  2. Arena.ai moved Kimi K3 to the top of its front-end-coding benchmark within hours of release, the first Chinese model to do so.
  3. Moonshot circulated IPO documents targeting a Hong Kong listing within six months at a prospective valuation above $30 billion.

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