> For the complete documentation index, see [llms.txt](https://docs.docbits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docbits.com/chinese/zui-zhong-yong-hu-yu-he-zuo-huo-ban/end-user-section/validation-screen/supplier-specific-ai-model-for-field-and-table-extraction.md).
# 选择用于字段和表格提取的供应商专属 AI 模型
在 **Validation screen（验证界面）** 的工具区域中，您可以选择用于 **Field Extraction（字段提取）** 和 **Table Extraction（表格提取）** 的 AI 模型。\
所选 **AI model（AI 模型）** 仅应用于当前供应商的所有文档。
要更改模型，请点击屏幕右侧的 **More options（更多选项）**（三个点）按钮打开选项菜单，然后选择一个可用模型：
* **Full** – 准确度最高；每份文档消耗 2 个令牌
* **Fast** – 默认级别；每份文档消耗 1 个令牌
* **Nexus** – 每份文档消耗 1 个令牌
* **Nexus Flash** – Nexus 系列中速度更快的级别；每份文档消耗 1 个令牌
* **Auto** – DocBits 会针对每份文档判断 Fast 是否足够，或是否需要 Full；每份文档消耗 1 个令牌
* **Auto Nexus** – 与 Auto 类似，但仅限于 Nexus 模型系列；每份文档消耗 1 个令牌
打开选项菜单，为此供应商选择 AI 模型。
AI Model 下拉菜单中的六个可用选项。
如果 **字段提取** 或 **表格提取** 的结果不理想，请尝试切换到其他模型以提高准确度。
如需为**未设置自定义模型的供应商全局配置 AI 模型**，或**管理每个供应商启用的模型**，请参阅相应文档[**此处**](/chinese/guan-li-yu-she-zhi/settings/document-processing/classification-and-extraction/ai-model.md)。
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