I’m in the same boat. After witnessing context rot and inference collapse, I do not trust any LLM with mission critical work. Not Jev, not grok, not fable, not Opus.
They also have a bad habit of accidentally building URLs that hit Alibaba infrastructure, likely because their training environment had them use those URLs. If you haven’t watched the outgoing network requests you might be very surprised at what your Qwen agents do sometimes.