# Doubao-Seed-2.1-lite

> 全新三模态理解大模型，支持 1M 超长上下文

- 模型 ID：`doubao-seed-2-1-lite`
- 厂商：字节跳动
- 主版本：260915
- 任务类型：Chat、VisualQuestionAnswering
- 标签：支持体验
- 更新时间：2026-10-15T12:25:14Z
- 模型详情页：https://ark.volcengine.com/region:cn-beijing/model/detail?Id=doubao-seed-2-1-lite

新一代全模态大模型，原生支持文本、视觉、音频统一理解，具备 1M 超长上下文窗口，多模态综合能力优秀。26/10/15新增支持System One决策API能力。

<div id="doubao-lite-content" style="box-sizing:border-box;margin:0;padding:0;width:100%;min-width:0;background:#fff;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',Arial,sans-serif;font-size:16px;font-weight:400;font-style:normal;line-height:1.8;color:#1d2129;letter-spacing:normal;text-transform:none;text-align:left;-webkit-font-smoothing:antialiased;">
<div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;width:100%;max-width:1200px;margin:0 auto;padding:clamp(28px,4%,48px) clamp(20px,4%,48px) 32px;">

  <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;margin-bottom:36px;">
    <div role="heading" aria-level="1" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:clamp(26px,3vw,34px);line-height:1.4;font-weight:650;color:#1d2129;letter-spacing:-.6px;">
      Doubao-Seed-2.1 Lite｜<span style="color:#5b4bff;">全模态理解与任务能力升级</span>
    </div>
    <div id="doubao-lite-overview" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;padding:24px 26px;background:#f7f7fa;border-radius:8px;margin-top:24px;">
      <div role="heading" aria-level="2" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:22px;line-height:1.45;font-weight:650;color:#1d2129;">全模态理解，兼顾能力与效率</div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:12px;">Doubao-Seed-2.1 Lite 面向文本、图像、视频与视听信息的理解任务，结合推理、代码生成与 Agent 任务执行能力，可用于教育、办公、内容分析和智能开发等场景。</div>
    </div>
  </div>

  <div id="doubao-lite-model-features" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;margin-bottom:40px;">
    <div role="heading" aria-level="2" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:24px;line-height:1.45;font-weight:650;color:#1d2129;">模型特性</div>
    <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:14px;">
      Doubao-Seed-2.1 Lite 相较 <span style="overflow-wrap:anywhere;">Doubao-Seed-2.0-lite/260428</span>，在 Coding、Agent、通用推理、长文理解及多模态理解等评测中均有提升。
    </div>
    <div id="doubao-lite-features" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;display:flex;flex-wrap:wrap;gap:20px;margin-top:24px;">
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;flex:1 1 calc((100% - 20px) / 2);min-width:min(100%,360px);padding:24px 26px;background:#f7f7fa;border-radius:8px;">
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:14px;line-height:1.5;font-weight:500;color:#5b4bff;">全模态理解</div>
        <div role="heading" aria-level="3" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:22px;line-height:1.45;font-weight:650;color:#1d2129;margin-top:8px;">图像、视频与视听信息理解</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:14px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">图像理解与视觉推理提升</span>支持图文信息提取、视觉推理与内容问答。</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:12px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">视频与视听信息理解</span>结合画面与声音，支持时序定位与视听问答。</div>
      </div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;flex:1 1 calc((100% - 20px) / 2);min-width:min(100%,360px);padding:24px 26px;background:#f7f7fa;border-radius:8px;">
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:14px;line-height:1.5;font-weight:500;color:#5b4bff;">推理与长文</div>
        <div role="heading" aria-level="3" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:22px;line-height:1.45;font-weight:650;color:#1d2129;margin-top:8px;">推理分析与长文本处理</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:14px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">通用推理与知识问答提升</span>支持文本内容的推理分析与知识类问题解答。</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:12px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">长文理解与信息归纳提升</span>支持长篇材料的信息提取、内容归纳与问答。</div>
      </div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;flex:1 1 calc((100% - 20px) / 2);min-width:min(100%,360px);padding:24px 26px;background:#f7f7fa;border-radius:8px;">
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:14px;line-height:1.5;font-weight:500;color:#5b4bff;">Coding &amp; Agent</div>
        <div role="heading" aria-level="3" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:22px;line-height:1.45;font-weight:650;color:#1d2129;margin-top:8px;">代码生成与任务完成</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:14px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">代码生成能力提升</span>支持代码生成与编程任务，覆盖开发辅助。</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:12px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">Agent 任务完成能力提升</span>支持多步骤任务处理与业务流程自动化。</div>
      </div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;flex:1 1 calc((100% - 20px) / 2);min-width:min(100%,360px);padding:24px 26px;background:#f7f7fa;border-radius:8px;">
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:14px;line-height:1.5;font-weight:500;color:#5b4bff;">应用场景</div>
        <div role="heading" aria-level="3" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:22px;line-height:1.45;font-weight:650;color:#1d2129;margin-top:8px;">教育、办公与内容分析</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:14px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">题目区域识别与裁切提升</span>支持教育图文处理、资料分析与学习辅助。</div>
        <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:15px;line-height:1.85;font-weight:400;color:#626675;margin-top:12px;text-wrap:pretty;"><span style="display:block;font-weight:600;color:#1d2129;">办公资料整理与内容分析</span>支持办公资料整理、内容摘要与多模态问答。</div>
      </div>
    </div>
  </div>

  <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;padding-top:24px;border-top:1px solid #e8e9f0;">
    <div role="heading" aria-level="2" style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:14px;line-height:1.45;font-weight:650;color:#1d2129;margin-bottom:12px;">相关服务协议条款</div>
    <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;display:flex;flex-wrap:wrap;gap:8px 24px;">
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:13px;line-height:1.8;color:#85899b;">豆包模型服务协议：<a href="https://www.volcengine.com/docs/82379/1142195" target="_blank" rel="noopener noreferrer" style="font-family:inherit;font-size:inherit;font-weight:500;color:#5b4bff;text-decoration:none;">点击阅读声明全文 →</a></div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:13px;line-height:1.8;color:#85899b;">火山方舟平台体验服务规则说明：<a href="https://www.volcengine.com/docs/82379/1108564" target="_blank" rel="noopener noreferrer" style="font-family:inherit;font-size:inherit;font-weight:500;color:#5b4bff;text-decoration:none;">点击阅读声明全文 →</a></div>
      <div style="box-sizing:border-box;margin:0;padding:0;min-width:0;font-family:inherit;font-style:normal;letter-spacing:normal;text-transform:none;font-size:13px;line-height:1.8;color:#85899b;">火山方舟平台安全信任服务协议：<a href="https://www.volcengine.com/docs/83458/1108217" target="_blank" rel="noopener noreferrer" style="font-family:inherit;font-size:inherit;font-weight:500;color:#5b4bff;text-decoration:none;">点击阅读声明全文 →</a></div>
    </div>
  </div>

</div>
</div>
