You are using Claude Fable 5 wrong

TL;DR

• 1

  Fable 5 is most useful when it runs systems, not one-off prompts: Greg's best examples chain tools like ElevenLabs, Whisper, FFmpeg, Remotion, and Figma MCP to edit a launch video end-to-end instead of just asking for a single output.

• 2

  A landing page tournament beats asking for one version of copy: His prompt generates 8 landing pages, has 5 judges score them, then merges the winner, producing copy so strong he says it beat what he'd expect after years serving millions of users.

• 3

  The best startup prompt starts with pushback, not code: By telling Fable to interview him like Mark Zuckerberg, Sam Altman, or Brian Chesky, Greg got challenged with lines like "That's a horoscope answer, Greg," and ended with a tighter product spec and V1 architecture.

• 4

  Low effort may be the alpha for routine work: Citing Morgan Linton and Factory.ai's Droid, Greg says people should orchestrate Fable 5 with cheaper models because Fable low can outperform Opus high while saving tokens before API-based pricing kicks in.

• 5

  Fable 5 gets especially strong on dense business documents and history: Greg highlights 1 million token context, table-reading, and chart analysis as the reason it can audit contracts, scan churn and support tickets, and even build an operating manual from years of your own notes.

• 6

  He sees immediate businesses in synthetic focus groups, 48-hour internal software, and contract refund audits: Examples include charging brands $3,000 to test ads with persona panels built from 500 reviews, selling custom tools to med spas for $5,000, and taking 25% of savings found in vendor contract audits.