Fable 5 felt better than Opus 4.8 on first-try coding
use of Fable 5 made it feel unusually strong for . Even a messy, high-level prompt with little structure could produce code close to the intended result on the first try.
Opus 4.8 is still described as highly capable, especially for , but it often needed two or three prompts to stay on track or match the expected output. Once guided there, Opus 4.8 could reach similar final code quality.
The main difference was first-try accuracy, not the quality of the final code. Fable 5 was only available for a few days before being pulled by the government, according to the source material.
Key points
- Fable 5 felt stronger at on the first try.
- Messy prompts seemed to work well with Fable 5.
- Opus 4.8 could reach similar final code quality after extra guidance.
- The reported gap was mainly first-try accuracy.
- The comparison is based on personal experience, not a formal .