Anthropic says Fable 5 has invisible safeguards that use prompt modification, steering vectors, or PEFT to limit its effectiveness for frontier LLM development (Matthias Bastian/The Decoder)

<a href="https://the-decoder.com/anthropic-releases-claude-fable-5-and-mythos-5-with-major-gains-in-coding-and-science/"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260609/i38.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260609/p38#a260609p38" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Matthias Bastian / <a href="https://the-decoder.com/">The Decoder</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://the-decoder.com/anthropic-releases-claude-fable-5-and-mythos-5-with-major-gains-in-coding-and-science/">Anthropic says Fable 5 has invisible safeguards that use prompt modification, steering vectors, or PEFT to limit its effectiveness for frontier LLM development</a></b></span>&nbsp; &mdash;&nbsp; Key Points &hellip; Ask about this article...&nbsp; Both models share the same base model.&nbsp; Fable 5 ships with conservative safety guardrails for general use.</p>