Write better with Claude Fable 5.1
Writing is most of what people ask Claude for, and Anthropic's prompting guide for Claude Fable 5.1 describes one problem with its prose.
$ open "Your first draft with Fable 5.1"
Hit Run, watch the agent write a short team message on the real model and save it, then read it as an editor.
checkpoints run as you work
✓ checkpoint passed, lab 2 unlocked
What you'll build
Curriculum
3 labs, about 24 min
- 1
Your first draft with Fable 5.1
Hit Run, watch the agent write a short team message on the real model and save it, then read it as an editor.
4 min
Pro - 2
Writing density
Get one reply without Anthropic's mannered-prose instruction and one with it, then compare the two.
8 min
Pro - 3
Capstone: your own writing prompt
Pick a real writing task, save a reusable style file built on Anthropic's instruction, and compare the reply before and after on your own words.
12 min
Pro
Your instructor
Elvis Saravia
Founder, DAIR.AI
Elvis founded DAIR.AI and wrote the Prompt Engineering Guide, one of the most widely used references on working with language models. He has worked at companies like Meta AI and Elastic, and specializes in AI agents, RAG, and harness engineering.
How labs work
Live workspace
You run the real tools in a browser workspace. Nothing to install.
Checkpoints
Each lab checks your files and output, then unlocks the next one.
Your work stays
The workspace persists between labs so you finish with a project.