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聊一聊苹果的端侧LLM,2-bit QAT实际可行性得到验证!
苹果在WWDC 2025中发布了Foundation Models ,支持端云两种形式的LLM模型,这里重点看一下端侧的本地模型的结构和特点。 端侧模型总大小约3B,支持视觉和文本输入,支持LoRA 。主干部分采用2bit QAT 量化,视觉编码和Embedding部分采用 4bit QAT量化,KV Cache使用8 bit量化。
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