Did I just unlock claude-fable-5-lite? 😂
Since Fable 5 got pulled (US export control order, Anthropic is contesting it), I wanted to see how much of its character lives in the system prompt vs. the model itself.
I ran the leaked Fable 5 prompt on Opus 4.8 head-to-head against stock 4.8.
Stop telling Claude, "do this."
Stop telling Claude, "write code."
Stop telling Claude, "fix this error."
You're actually treating a senior AI like a junior intern.
Here are 8 prompts you can copy and paste directly:
This app called AI Calorie Tracker by Yazio made:
- 700K installs/mo
- a revenue of $5M/mo
with the longest onboarding that works
> 78 step clean and colorful onboarding grows retention
> "science backed" data builds trust
> small trick with hold button during onboarding for commitment
> not hard paywall but the goal at the top makes it tempting
> and once you add your first meals, you will soo come back to the paywall because the majority of analysis are pro only
>gamified discount wheel brings higher subscriptions
> they rank with a high popularity for their competitors' keywords like "myfitnesspal" "yuka" ...