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Artificial Analysis scores K3 at 57 — Opus 4.8-class, and #1 on Frontend Code Arena. Weights land July 27

Kimi K3confirmedby ArtificialWatch
Artificial Analysis scores K3 at 57 — Opus 4.8-class, and #1 on Frontend Code Arena. Weights land July 27
Source imagery · verified against a primary source

The independent verdict is in. Artificial Analysis puts Kimi K3 at 57 on its Intelligence Index — comparable to Claude Opus 4.8 and GPT-5.5, behind Claude Fable 5 and GPT-5.6 Sol.

The agentic story is stronger than the headline index suggests: 1668 Elo on GDPval v2 (above GLM-5.2's 1514, GPT-5.5's 1494 and Opus 4.8's 1600; behind Fable 5's 1760), #1 on AutomationBench-AA at 53%, and second only to Fable 5 on AA-Briefcase at 1547 — a +732-point jump over K2.6. Separately, K3 took #1 on Frontend Code Arena at 1679 points, a 17-place jump, ranking first in 6 of 7 domains and second only to Fable 5 in Gaming.

The rest of this analysis — 3 more paragraphs — plus the source, is on the paid plans.

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Claude Opus 5 went live at 16:51 UTC. The alert was in subscribers' inboxes at 16:52.

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