Kimi K3.1 Pro hits #4 on Artificial Analysis Intelligence Index, closing on frontier closed models

Yuchenj_UW · x · 2026-10-24

Moonshot's Kimi K3.1 Pro scores 55 on Artificial Analysis' Intelligence Index v4.3.2, ranking #4 among all models — just a few points behind Claude Opus 5.5 (58), Claude Sonnet 5.5 (56) and Muse Wonder (56), while edging out GPT-6 Astra (53) and Gemini 4.1 Pro. The author argues open source is back at the frontier.

Related event: Moonshot's Kimi K3.1 Pro Ranks 4th on Artificial Analysis Index, Closing Gap with Closed Models(13 posts)→

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