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claude-fable-5-system-prompt-clean — the optimized, token-efficient version of the leaked Claude Fable 5 / Mythos 5 system prompt. Re-engine

Optimized system prompt

Steady

6

signal score

🔗 5

sources · claude

↓ Cooling

7-day est. ~3

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Why this scored 6

every term, weighted
Velocity+1.1 / 40 max

Engagement per hour, normalized against the fastest item on its own source

Acceleration+0.0 / 25 max

Whether that velocity is itself speeding up, as a per-hour rate

Cross-source spread+11.1 / 25 max

How many independent communities are talking about the same entity

Recency+3.9 / 10 max

Decays to zero over 14 days

Saturation penalty−9.7 / 30 max

Subtracted once something is big and old — we rank what's next, not what's peaked

Composite6.4

Weights are hand-tuned, not learned — we're calibrating them against realized trends as history accumulates. On a topic's first sighting there's no previous reading to compare against, so acceleration starts from a neutral prior rather than a measurement. Full methodology

Outlook

medium confidence · estimate, not a guarantee

7-day

~3

range 1–4

14-day

~1

range 0–3

30-day

~0

range 0–3

Signal history

7-day window (free)

— — projected trajectory (estimate, not a guarantee)

Entities

claudemythos
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Drop this in a README or blog post — it updates automatically as the score moves.