Artificial Analysis says Kimi K3.1 Pro lands 4th on its Intelligence Index, behind only Opus 5.5 (max), Sonnet 5.5 (max), and Muse Wonder Full (max) (@artificialanlys)

Kimi K3.1 Pro has secured the 4th position on Artificial Analysis's Intelligence Index, scoring 55 points. This places it behind Opus 5.5 (max), Sonnet 5.5 (max), and Muse Wonder Full (max). The new reasoning model, Kimi K3.1 Pro, demonstrates significant improvements in agentic performance, gaining 11 points over its predecessor, Kimi K3 (max, 44). It is anticipated to become the leading open-weights model once its weights are released.