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Dear subscribers,
With the launch of Fable 5.2, Anthropic now has the two best models in the world (Opus 5.5 is the other one).
I've spent 500+ hours using both models in Claude Code. In this video and post, I’ll show you exactly how I use each across 5 real use cases.
Watch the tutorial now or read the written guide below. This post is sponsored by Anthropic, but opinions are my own.
I cover:
(00:00) Fable 5.2 vs Opus 5.5: When to use each model
(02:32) My Claude Code setup revealed
(03:30) Set up a chief of staff for your inbox and calendar (Opus)
(06:11) Create an advisor for your career and life (Fable)
(09:14) Automate a complete workflow end-to-end (Opus)
(14:01) Design and build a mobile app with Claude Design (Opus)
(18:47) Help a loved one through a long-term illness (Fable)
(20:54) The secret prompt that improves your AI skills over time
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When to use Fable 5.2 vs Opus 5.5
Here’s the TL;DR from Anthropic’s Fable 5.2 post:
Fable is smarter than Opus on most tasks, including coding, long-running agents, and more. I used it to build a 3D kart racer you can play for free.
Fable costs 2x as much per token as Opus. On the Max plan, you can use Fable for up to half of your weekly limit.
Even though Fable is better, I don’t recommend using it for everything because Opus 5.5 is still an incredible model. Instead, my advice is to:
Use Opus as your daily driver and Fable for your hardest work.
Alex (AI researcher) at Anthropic shared some great tips for using Fable:
Ask Fable what’s wrong with your idea before it builds anything.
Use Fable on medium effort, which is what Anthropic employees do too.
Tell Fable upfront what needs your approval and what it can do on its own.
Give it a whole project instead of a single next step, because Fable can think through the steps on its own.
Personally, I use Opus for managing my emails, automating workflows, and building personal apps. I use Fable for getting strategic advice on my business, caring for my mom, and auditing all my AI skills for bugs or issues.
In the rest of this post, I’ll walk through each use case with exact prompts you can copy to set them up yourself:
