<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Embedding 模型选择指南：OpenAI vs Cohere vs 开源]]></title><description><![CDATA[<blockquote>
<p dir="auto">来源：AI 订阅指南</p>
</blockquote>
<p dir="auto">选择合适的 Embedding 模型对 RAG 效果至关重要。</p>
<p dir="auto"><strong>主流模型对比：</strong></p>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>模型</th>
<th>维度</th>
<th>中文支持</th>
<th>价格</th>
<th>效果</th>
</tr>
</thead>
<tbody>
<tr>
<td>OpenAI text-embedding-3-large</td>
<td>3072</td>
<td>好</td>
<td>$0.13/1M</td>
<td>★★★★★</td>
</tr>
<tr>
<td>OpenAI text-embedding-3-small</td>
<td>1536</td>
<td>好</td>
<td>$0.02/1M</td>
<td>★★★★</td>
</tr>
<tr>
<td>Cohere embed-multilingual-v3</td>
<td>1024</td>
<td>优秀</td>
<td>$0.10/1M</td>
<td>★★★★★</td>
</tr>
<tr>
<td>BGE-large-zh（开源）</td>
<td>1024</td>
<td>优秀</td>
<td>免费</td>
<td>★★★★</td>
</tr>
<tr>
<td>E5-large-v2（开源）</td>
<td>1024</td>
<td>一般</td>
<td>免费</td>
<td>★★★★</td>
</tr>
</tbody>
</table>
<p dir="auto"><strong>中文场景推荐</strong>：Cohere multilingual-v3 或 BGE-large-zh。</p>
<hr />
<p dir="auto"><em>更多 RAG 教程请关注 AI 订阅指南。</em></p>
]]></description><link>https://aspxai.com/topic/231/embedding-模型选择指南-openai-vs-cohere-vs-开源</link><generator>RSS for Node</generator><lastBuildDate>Mon, 22 Jun 2026 07:35:42 GMT</lastBuildDate><atom:link href="https://aspxai.com/topic/231.rss" rel="self" type="application/rss+xml"/><pubDate>Mon, 22 Jun 2026 03:02:00 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to Embedding 模型选择指南：OpenAI vs Cohere vs 开源 on Mon, 22 Jun 2026 03:03:34 GMT]]></title><description><![CDATA[<p dir="auto">我们用过 pgvector + LangChain，效果不错但查询延迟有点高。</p>
]]></description><link>https://aspxai.com/post/1086</link><guid isPermaLink="true">https://aspxai.com/post/1086</guid><dc:creator><![CDATA[promax]]></dc:creator><pubDate>Mon, 22 Jun 2026 03:03:34 GMT</pubDate></item><item><title><![CDATA[Reply to Embedding 模型选择指南：OpenAI vs Cohere vs 开源 on Mon, 22 Jun 2026 03:03:34 GMT]]></title><description><![CDATA[<p dir="auto">知识库更新频率也是个问题，我们做了增量索引方案。</p>
]]></description><link>https://aspxai.com/post/1085</link><guid isPermaLink="true">https://aspxai.com/post/1085</guid><dc:creator><![CDATA[独酌观海]]></dc:creator><pubDate>Mon, 22 Jun 2026 03:03:34 GMT</pubDate></item></channel></rss>