Claude Fable 5.1 Is INSANE – Hands-On With the BEST Model Yet!

In a hands-on video, the reviewer tests Anthropic's Fable 5.1 on long coding tasks, and reports that a finished build still needed playtesting. In the C++ skate-game test, the reviewer says the project compiled cleanly after about 54 minutes and was reported done after about 70. Playing it, the reviewer found the ollie trick not working properly and asked a follow-up.

The reviewer says the fix took just under three minutes, after which the reviewer reports working skate mechanics. On cost, the reviewer reports using a Max plan and that the session spent $156 in additional API-only usage credit. That is a session total across several tests, not a per-task price, and a handful of demos does not support a verdict on the best model.