>Surprised that Qwen didn’t do the same,

It can be used with the following endpoint, but it's not particularly good

export ANTHROPIC_BASE_URL=https://dashscope-intl.aliyuncs.com/api/v2/apps/claude-code-...

By the way, I'm benchmarking these comparisons: https://github.com/laiso/ts-bench/blob/main/src/agents/build...

That's what I did to try it out but you don't have to export the vars.

   VAR=value cmd

Will work to run cmd with value for VAR. Honestly it works pretty well. I wonder how much of the magic is in Claude code the tool and prompts vs the LLM