the Fable/Opus stack has found privacy leaks that the openweights stacks don't find
criley2 on Hacker News
open weights models find between 1/4 to 1/2 of what Fable/Opus stack can find
In the thread “GPT-5.6 Luna vs. GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?”
Helped: Adversarial validator passes and tiered subagents for critical domains.
Got in the way: Open weights models miss critical issues and privacy leaks.
… My experience is that open weights models find between 1/4 to 1/2 of what Fable/Opus stack can find, and often miss the most critical issues. I work where privacy isn't just good behavior, it's enforced by law, and the Fable/Opus stack has found privacy leaks that the openweights stacks don't find. You can imagine that paying for these Claude runs isn't cheap, each one can eat 25-33% of my 5 hour limit. …