KinetiNode / claude-fable-5-system-prompt-cleanView on GitHub
the optimized, token-efficient version of the leaked Claude Fable 5 / Mythos 5 system prompt. Re-engineered into clean Markdown for universal execution on Gemini 3.1 Pro, ChatGPT 5.6, and advanced LLM agents.
329Jul 19, 2026Updated this week

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