For those trying to get it to work in OpenCode with a Qwen Cloud Token Plan, this is what worked for me. Note that I've just matched Qwen 3.7 Max for the limits as I don't know exactly what they are.
"provider": {
"alibaba-token-plan": {
"models": {
"qwen3.8-max-preview": {
"limit": {
"context": 1048576,
"output": 65536
},
"modalities": {
"input": [
"text"
],
"output": [
"text"
]
},
"name": "Qwen3.8 Max Preview"
}
}
}
}