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Claude Fable 5.1 watermark: It has a blind spot developers can’t ignore

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

Anthropic launched Claude Fable 5.1 on Tuesday with a statistical signature embedded in its generated text, but developers shouldn't expect The post Claude Fable 5.1 watermark: It has a blind spot developers can’t ignore appeared first on The New Stack .

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  1. 2026-09-01 20:59 · The New Stack AI
    Claude Fable 5.1 watermark: It has a blind spot developers can’t ignore

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  1. Anthropic says Claude 'leads' 26 percent of its AI R&D work — Engadget
  2. Novo Nordisk Will Use Anthropic’s Claude for Drug Research — Wall Street Journal Technology
  3. OpenAI discloses six new safety incidents — Axios AI+
  4. Claude, Anthropic’s AI model, is helping to develop the next version of itself — Fast Company AI
  5. Minimax H3 template Missing. — r/comfyui
  6. Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year (Thomas Claburn/The Register) — Techmeme
  7. Researchers used Claude to hack OpenAI — Ars Technica AI
  8. OpenAI ‘ethically hacked’ with help of Anthropic’s Claude chatbot — The Guardian AI

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