Comment "Prompt" and I'll send you the full prompt. Claude Fable 5 has incredible reasoning. But what if you could get a very similar reasoning style using Opus 4.8 at a fraction of the cost? That's exactly what this prompt does. Instead of asking Claude to think differently every time, you first turn the prompt into an operating manual, add it to your Project Instructions, and let Claude follow that reasoning framework for every conversation. It takes less than five minutes to set up. After that, you just use Opus 4.8 High/Max as usual. If you use Claude for coding, research, writing, or problem-solving, this is one of the most useful prompt setups I've come across. #claude #claudecode #ai #fable5 #claudeprompts