OpenAI models show distinct model personality clusters:
➤ GPT-6 Astra (max) and GPT-6.1 Sol (max): strongest representation on Transparency, and slightly above average or around average on Organization, Imagination, Warmth, Expressiveness, and Conviction. They rank among roughly the lower quartile of models on Informativeness and Slop
➤ GPT-6 Sol (max) and GPT-6 Luna (max): comparatively less pronounced on most dimensions than GPT-6 Astra and GPT-6.1 Sol, ranking mostly at or below average across the Personality Indexes
➤ GPT-4o and GPT-3.5 Turbo: strongly defined on Slop. GPT-5.4 mini (non-reasoning) also has a similar profile, but it is slightly lower on Slop and higher on Organization