Moonshot's Kimi K3 Is the Largest Open-Weight Model Ever — and It Just Beat Fable 5 at Frontend Code
China's Moonshot AI released Kimi K3, a 2.8-trillion-parameter open-weight mixture-of-experts model — the biggest ever — that took the #1 spot on Arena.ai's Frontend Code leaderboard at 1,679 points, ahead of Claude Fable 5. It has a 1M-token context, activates just 16 of 896 experts per token, and full weights are promised on Hugging Face by July 27.
Moonshot AI
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