Opus 5.5 loves to tell you ‘this matters’ (and other AI writing tells)

Graphite’s study shows that even as leading AI models get better at avoiding obvious giveaways like em-dashes, they still develop distinctive linguistic fingerprints—raising the stakes for enterprises that rely on AI for content generation, customer communications, and knowledge work. For CIOs and technology leaders, the strategic implication is that AI output remains measurable and potentially identifiable, which matters for governance, brand consistency, compliance, and quality control as organizations scale usage across departments.