No
Fable downgrades to Opus when testing for bugs in memory in a legacy C code base
SyneRyder on Hacker News
In the thread “GPT-5.6 Sol Pricing Cut by 50% on OpenRouter”, replying to this comment
Got in the way: Fable downgrades to Opus when testing memory bugs in legacy C.
… I have a theory that the safeguards differ depending on the user's country. I'm in Australia, and Fable downgrades to Opus when testing for bugs in memory in a legacy C code base. If Fable starts taking initiative and writes a test case that involves writing to a null pointer, that's the end of the conversation.