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以前跑这种 10 小时的长任务，我都不敢用闭源顶配模型，心疼 Token 费啊。但 Qwen3.5-Plus 这次是全尺寸开源，不仅 API 价格极低（阿里云百炼上最低能到闭源模型的十几分之一），你甚至可以自己部署。