Kimi K3.1 Pro Shows Largest Direct-Predecessor Personality Shift
Artificial Analysis found that Kimi K3.1 Pro’s percentile ranks shifted by an average of 30 points from Kimi K3 across 30 traits on AA-PersonalityBench, the largest change it has measured between a model and its direct predecessor. Eighteen of the 30 trait ranks moved by at least 25 points. The largest average shift for another direct-predecessor pair was 23 points for GPT-6.1 Sol versus GPT-6 Sol.
The benchmark result shows substantial differences between Kimi K3.1 Pro and Kimi K3 on the measured personality traits, while also providing a direct comparison with another updated-model pair.
In AA-PersonalityBench, Kimi K3.1 Pro shows the biggest personality change we’ve seen compared to a direct predecessor
Each model is percentile ranked from 1 to 100 on each of 30 personality traits. Across all 30 traits, Kimi K3.1 Pro's ranks moved by an average of 30 points from Kimi K3's (next largest is 23, for GPT-6 Sol to GPT-6.1 Sol), and 18 of the 30 traits moved by 25 points or more.
