Mixed
I was trying Fable for execution and noticed a fair bit of what looked like thrashing or farting around rewriting tests that it just made which were failing
lubujackson on Hacker News
In the thread “Claude Fable 5 vs. GPT-5.5: Better Planning, Similar Execution”
Helped: Using Opus for planning and GPT for execution.
Got in the way: Fable thrashed rewriting failing tests during execution.
… GPT seems more consistent and dots all the i's, etc. I was trying Fable for execution and noticed a fair bit of what looked like thrashing or farting around rewriting tests that it just made which were failing, which didn't give me a lot of confidence. But the final result was clean, just a longer path to get there. …