用 cURL 快速验证连通

curl https://api.lowcostaiapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-4o-mini","messages":[{"role":"user","content":"Hello"}]}'

{
  "choices": [{
    "message": { "role": "assistant", "content": "Hello! ..." }
  }],
  "usage": { "total_tokens": 23 }
}