Qwen3.8 Max is getting open-sourced tomorrow and before it does I want to state my opinion on the model after rigorous use. Although I am a Qwen ambassador this is my full real opinion.
The model from my experiences acts more like Opus than it does Sol, it's less programmatic and has more a expressive personality. On lower thinking modes (low, medium) this expressive-ness is very clear, it's more opinionated, moody, and definitely more likely to make irreversible mistakes.
Qwen3.8 has been my daily driver for a couple weeks now and I want to say the output in omp is some of the best I've ever got, Qwen3.8 + OMP > GPT-5.6 Sol + Codex, this is a hard truth to straddle as I send hundreds of dollars/month to OpenAI for codex, but it's ability to hold this harness by the neck and work like a dog is truly unbelievable.
it orchestrates sub-agents really well, and although a (very large) token burner it never disappoints. However, it still falls far behind in real-world developer experiences and definitely behind Sol/Fable in "out of the box" thinking.
This thing is the biggest work horse model I've ever tested and can be set on a task to run for days without any interruptions (they really didn't lie there), to the point where it can spend hours doing extremely deep research on a indirect task.
Also, dont use xhigh thinking, waste of tokens.