Fable 5 vs. GPT-5.6 Sol on an NP-Hard Problem: Does /goal Help?
Summary
Charles Azam compares Fable 5 and GPT-5.6 Sol on an unpublished NP-hard optimization problem, with and without their /goal mode. The results show Fable 5 performs exceptionally well and consistently, while /goal is not universally beneficial, sometimes helping and other times hindering depending on the model and instance.