Claude 4.7 named a journalist from 125 words of unpublished writing

via

ClaudeAI

Surprised this isn't a bigger topic but you tell me! In short: writer Kelsey Piper pasted 125 words of an unpublished political column into 4.7 and got her own name back. She'd logged out, run it via the API, retried it on a friend's laptop. Then swapped the genre entirely with unpublished prose unrelated to her usual space (a school progress report about her kid's Pokémon essays, a movie review of a 1942 wartime comedy). Claude named her every time, ChatGPT and Gemini guessed wrong. Her writeup

More from ClaudeAI

Claude can now build your entire weekly meal plan with real grocery prices from your actual store FOR FREE. Here's how

ClaudeAI·6

The device you are on seems to change behavior

ClaudeAI·6

Suggestions For Making Claude Less Lazy?

ClaudeAI·5

Opus 4.7 is just 4.6 with a stick up its butt. Give me my tokens back!

ClaudeAI·13

Claude Status Update : Claude.ai unavailable and elevated errors on the API on 2026-04-28T18:33:55.000Z

ClaudeAI·14

Claude Status Update : Claude.ai unavailable and elevated errors on the API on 2026-04-28T17:51:36.000Z

ClaudeAI·13