From my experience Qwen-3.7-Max is above the Opus level but delivers results much faster. Slightly worse then Fable. Way ahead of Deepseek 4 Pro (in speed and overall comprehension) - which is a workhorse on its own. I am using them all with Claude Code mostly.

Qwen-3.7-Plus is quite OK, good for subagent use. Way better then Sonnet.

Qwen-3.8-Max-Preview seems working just fine for me at the moment - I am playing with is right now but too early to say anything. At 10% of regular price it is a steal so far.