Nine Clusters, One Style: When AI Models Are Copies of Each Other

The Rival Tips project is methodologically specific in ways that matter for interpreting its claims. The 32-dimension stylometric fingerprint they extracted captures surface-level writing behavior — lexical richness, sentence structure, punctuation habits, formatting patterns — not semantic reasoning or factual accuracy ^[1]. What the study measures is how models write, not what they know. That scope limitation is also the study's strength: style is the dimension the market sells on most directly, through demos, through marketing copy, through the qualitative impressions formed during procurement evaluations. Finding nine clone clusters above…