← Claude
Jack Roberts
Fable 5 Dies in 4 Days... Do these 5 Things RIGHT NOW
⏱ 17 min video · 3 min read4 Jul 2026Worth watching
TL;DR
Jack Roberts walks through 5 high-value use cases for Claude 5 (referred to throughout as 'Fable 5') before it loses its free Claude app access in roughly 3 days and becomes API-only. The video covers life optimization, website design, agentic operating systems, security/code review, and business bottleneck analysis, plus a practical cheat sheet for using Claude 5 cost-effectively across its effort tiers.
Key points
1
Claude 5 is being removed from the Claude app in ~3 days (from video publish date) and will only be accessible via API at roughly $2 per million tokens vs $1 for Opus 4.8 — use it now while it is still in the app.
2
Claude 5 on low mode outperforms Opus 4.8 on high mode and costs approximately 50-60% less, making low the smart default for most tasks.
3
For life strategy, use the Wheel of Life prompt (health, work, relationships) to have Claude 5 interview you and produce a comprehensive personal life review.
4
Claude 5 is the best design agent available — it produced single-prompt websites with scroll animations, interactivity, and premium layouts that Opus 4.8 could not match.
5
For business bottleneck analysis, use the Theory of Constraints prompt to turn Claude 5 into a personal business advisor that works through attention, leads, conversion, delivery, retention, and cash.
Actionable insights
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Run Claude 5 on LOW as your default for chats and drafts — it already beats Opus 4.8 high, saving significant token cost; only escalate to HIGH for hard problems and MAX for irreversible architecture decisions.
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Use /compact in Claude to compress long conversations before branching, or open a new window after each task to manage context window and reduce token spend across a 1 million token limit.
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When doing code reviews or security analysis, have Claude 5 adversarially verify findings against ChatGPT and Gemini — different models catch different vulnerabilities, and Claude 5 scored 90% vs Opus 4.8's 80% in independent blind testing.
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Build or invest in an agentic operating system that centralises all AI interactions, tracks spending per model, stores skills, and can run overnight research and improvement suggestions using Claude 5.
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For security and vulnerability analysis, expect Claude 5 to self-downgrade to Opus 4.8 when it detects anything resembling prompt injection — work around this by rerunning the prompt in a new window to capture the full output.
Notable quotes
“A bad driver with an amazing engine will be worse than a great driver and an okay engine.”
“Fable 5 is so powerful, the only thing that can stop it is the US government.”
“You can run Einstein for £1,000 an hour — when you are in here, let us think of our biggest problems. Then when we understand it, we can start tagging in the lower models after the fact.”
Worth watching?
✅
Worth watching the full video?
Worth watching if you want the live website design comparisons and the visual effort-tier cheat sheet — the key prompts and cost strategy are all captured here though, so you can act immediately without watching.
Saved you some time? The creator still deserves a like.
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