Claude Fable 5 is BACK

Get my Fable 5 prompt pack: https://startup-ideas-pod.link/fable5-prompt-pack In this episode I break down how to get the most out of Fable 5, the most powerful model I've ever used. I move past the benchmarks and go straight into tactical use cases, copy-and-paste prompts, and startup ideas you can build today. I walk through tournaments for copy and landing pages, an interview-before-build workflow that hunts for product-market fit, and ways to point Fable at contracts, churn data, and years of your own notes. I close with three of my favorite startup ideas — a synthetic focus group firm, 48-hour custom software, and a contract refund firm — plus the exact prompts behind each. My goal here stays simple: leave you ready to build and earn with Fable 5 while it remains included in your plan. Timestamps 00:00 – Intro 02:22 – Anthropic Employee Edits a Launch Video With Fable 05:50 – Building an AI Content Engine 07:30 – Best way to configure Fable 5 08:42 – Prompt 1: Copywriting Tournament for Landing Pages 13:18 – Prompt 2: The Interview-Before-Build Prompt 18:34 – Prompt 3: Hire Fable to Kill Your Company 20:18 – Prompt 4: Your One-Page Operating Manual 21:20 – Prompt 5: Find the Gaps Worth Filling 22:06 – Prompt 6: Negotiation Simulator 23:11 – Prompt 7: The 80-Page Second Opinion on Contracts 24:56 – Prompt 8: Make Fable Build Its Own Tools 25:47 – Startup Ideas 31:23 – Closing Thoughts Key Points * I show why low effort is the alpha, since Fable Low beats Opus High on routine work. * I run tournaments — landing pages and ad copy scored by AI judge panels — to ship far stronger output. * I use an interview-before-build prompt so Fable pushes back and writes specs with real product-market-fit odds. * I point Fable at big datasets — contracts, churn data, support tickets, years of notes — to surface money and patterns. * I share startup ideas Fable 5 makes viable today, including a synthetic focus group firm and a contract refund firm. Numbered Section Summaries 1. The Real Unlock Behind Fable 5 I explain why I made this episode: most videos stay parked on benchmarks while I focus on tactical use cases and business ideas. The premise is that the most powerful coding agent yet opens fresh ways to build and earn. 2. Editing a Launch Video End to End I show how an Anthropic employee used Fable to transcribe 17 takes across four scenes, let subagents pick the best shots, stitch them with FFmpeg, and even color grade — output that once cost hundreds of thousands. The lesson: Fable now helps you grow whatever you build, including the apps you vibe-code. 3. The Content Engine Setup I describe building an AI content engine by feeding Fable the right inputs — origin story, ICP, frameworks, pillars — inside a content brain like Obsidian, then running a weekly research-and-test loop. Fable 5 runs the whole system, reads your charts, checks its work visually through Cowork, and stays productive for hours on its own. 4. Low Effort Is the Alpha I cover Morgan Linton's takeaway that low effort wins, and I recommend tools like droid from factory.ai to orchestrate effort levels and reserve heavy runs for the moments that earn it. With API pricing arriving, smart routing keeps your token spend lean. 5. Tournaments for Copy and Specs I run landing-page and copy tournaments where five AI judges — a skeptical CFO, a midnight founder, a competitor, my ideal customer, and a conversion copywriter — score eight versions and merge the winner. I pair this with an interview-before-build prompt that role-plays Zuckerberg, Altman, or Chesky, pushes back on vague answers, and writes a spec with real PMF odds. 6. Pointing Fable at Your Data I share advanced plays: hire Fable to red-team and kill your own company, mine churn data and support tickets, refactor a SaaS you buy, and turn years of notes into a one-page operating manual. Its million-token context window holds years of you at once and surfaces patterns you sit too close to see. 7. Reviews, Negotiation, and Self-Building Tools I use Fable as a negotiation sparring partner that becomes the counterparty, as an 80-page second opinion that reads the tables and schedules buried inside contracts, and finally as a system that studies my repeated requests and builds its own reusable tools. The #1 tool to find startup ideas/trends - https://www.ideabrowser.com/ LCA helps Fortune 500s and fast-growing startups build their future - from Warner Music to Fortnite to Dropbox. We turn 'what if' into reality with AI, apps, and next-gen products https://latecheckout.agency/ The Vibe Marketer - Resources for people into vibe marketing/marketing with AI: https://www.thevibemarketer.com/ FIND ME ON SOCIAL X/Twitter: https://twitter.com/gregisenberg Instagram: https://instagram.com/gregisenberg/ LinkedIn: https://www.linkedin.com/in/gisenberg/