🚀 New Video: I Built Real Apps With Fable 5 for 24 Hours (The Honest Review)
24 hours in, real money on the line, and I've barely done anything else. This isn't the launch-day hype video — it's what actually held up after a full day of building with Fable 5, the one shift that changes how you use it, and the stuff that'll annoy you. - The mindset flips from task to responsibility. Every model up to Opus had you babysitting: give a task, then go check it. With Fable that checking instinct mostly goes away. Anthropic's own example: stop saying "look at this crash report" — make it responsible for keeping the app from crashing. Karpathy called it a step-change ("software on a tap"), though fair warning, he just joined Anthropic. - Three prompting rules that moved the needle. Point it at your hardest problem (easy stuff undersells it). Let it interview you before it builds (single biggest upgrade to my results). And tell it why — who it's for, what it feeds into. - Two real builds, one prompt each. A local-first business hub web app that ran unattended for ~41 minutes, tested its own server end to end, and even fired a real Mac notification (one tab shipped broken, being honest). And a 3D CAD editor it named "Forge" that then designed a watertight, print-ready phone stand from scratch — adding a cable slot I never asked for. - It only pulls ahead on hard work. One-liners feel like Opus. By the end of the day the bottleneck had flipped: it stopped being the model and became how clearly I can describe what I want. - The annoying parts are real. ~2x Opus usage (one build ate 119k tokens in a single turn), guardrails so jumpy they tripped on a phone stand and silently flipped me back to Opus mid-build, and it's slow — hard requests run for minutes. - My take: specialist, not a daily driver. Point it at your hardest, longest, most-expensive-to-get-wrong work and it pays for itself in one good run. Everything else, keep your cheaper models. 📎 Full 24-hour field report PDF pinned below — the exact prompts, the self-QA checklist it ran, and the 3 downsides to plan around.