‘This Matters’: Researchers Identify Thousands of New Tells in AI Writing

Gizmodo
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A study by Graphite identified about 13,000 phrases that reveal AI-generated text, highlighting 'this matters' as a key tell in Anthropic's Claude Opus 5.5. Claude's writing is becoming more human-like, while OpenAI's Astra shows different distinctive phrases and trends toward less human-like text.

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