All Courses
Level Progression
1
What Is Fable 5?
The Mythos class explained, what changed on June 9, 2026, and who Fable 5 is for.
6m50
2
Long Tasks Are the Point
Fable 5's advantage grows with task length and complexity. What that unlocks and what it looked like at Stripe.
7m50
3
How to Work With Fable
Delegation patterns for long tasks: give it the whole problem, set checkpoints, and know what to verify.
8m75
4
Safety, Access, and Cost
How sensitive queries route to other models, what Fable 5 costs, and when to reach for it.
6m50
Finish every lesson and pass every exercise to earn a certificate of completion.