@Av1dlive: this is f**king dangerous someone just figured out how to get fable 5 reasoning in opus 4.8 with one prompt you have le…

X AI KOLs Timeline 07/07/26, 10:22 AM Tools

Summary

A user discovered a prompt that unlocks Fable 5 reasoning capabilities in Claude Opus 4.8 at reduced cost, but it consumes 20% more usage.

this is f**king dangerous someone just figured out how to get fable 5 reasoning in opus 4.8 with one prompt you have less than 24 hours to set this up as this takes away 20% of your usage limit here is how: 1) Paste the prompt and ask it to "make an operating manual" 2) Create a New Claude Project and "Add this .md in Project instructions 3) Use Opus 4.8 High/Max and now you have Fable 5 reasoning at 1/5th the price save and bookmark it no matter what

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Cached at: 07/08/26, 03:41 AM

this is f**king dangerous

someone just figured out how to get fable 5 reasoning in opus 4.8 with one prompt

you have less than 24 hours to set this up as this takes away 20% of your usage limit

here is how:

Paste the prompt and ask it to “make an operating manual”
Create a New Claude Project and “Add this .md in Project instructions
Use Opus 4.8 High/Max and now you have Fable 5 reasoning at 1/5th the price

save and bookmark it no matter what

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