Claude Fable 5 System Prompt Leaked

Source: @artificiallyinfluenced on Threads

Content

SOMEONE LEAKED THE ENTIRE CLAUDE FABLE 5 SYSTEM PROMPT AND ANTHROPIC CANNOT DELETE IT FROM THE INTERNET.

The full system prompt for Claude’s newest model is now publicly available. This reveals the actual instructions behind how Fable 5 thinks and responds.

Note: This represents a significant leak of Anthropic’s proprietary model instructions.