Why don't you try it out in Opencode? It's possible to hook up the openrouter api, and some providers have started to host it there [1]. It's not yet available in opencode's model list [2].
Opencode's /connect command has a big list of providers, openrouter is on there.
[1] https://openrouter.ai/qwen/qwen3-coder-next
[2] https://opencode.ai/docs/zen/#endpoints