I stopped picking Fable because it refuses based on guardrails so often. I do a lot of security related work, and Fable just won't do any of it. So, I don't bother. Unfortunately, Opus 5 also refuses quite a bit of security work, now, as well, so my Anthropic subscription becomes less useful by the day. Fable may be better, but if it won't do the work...
DeepSeek and Kimi K3 will happily do security work, and they do it pretty well.
DeepSeek and Kimi K3 will happily do security work, and they do it pretty well.