LangChain 提供了一个庞大的生态系统，包含 1000+ 种集成，涵盖聊天模型、嵌入模型、工具包、文档加载器、向量存储等。
A **提供商** 是指托管 AI 模型并通过 API 提供访问的公司或平台（例如 OpenAI、Anthropic、Google）。许多提供商都有专门的 langchain-<provider> 包，实现了一个或多个 LangChain 标准接口——聊天模型、嵌入模型、向量存储等——无论底层提供商是谁，都为您提供一致的 API。安装包，选择模型名称，即可更换提供商而无需更改代码。
Chat models
Embedding models
Tools and toolkits
Middleware
Checkpointers
Sandboxes
要按组件类型查看完整集成列表，请参阅侧边栏中的类别。
热门提供商
| Provider | Package | Downloads | Latest version | JS/TS support |
|---|---|---|---|---|
| OpenAI | langchain-openai | <a href="https://pypi.org/project/langchain-openai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-openai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-openai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-openai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Google (Vertex AI) | langchain-google-vertexai | <a href="https://pypi.org/project/langchain-google-vertexai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-google-vertexai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-google-vertexai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-google-vertexai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Anthropic (Claude) | langchain-anthropic | <a href="https://pypi.org/project/langchain-anthropic/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-anthropic/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-anthropic/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-anthropic?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Google (GenAI) | langchain-google-genai | <a href="https://pypi.org/project/langchain-google-genai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-google-genai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-google-genai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-google-genai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| AWS | langchain-aws | <a href="https://pypi.org/project/langchain-aws/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-aws/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-aws/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-aws?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Ollama | langchain-ollama | <a href="https://pypi.org/project/langchain-ollama/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-ollama/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-ollama/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-ollama?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Databricks | databricks-langchain | <a href="https://pypi.org/project/databricks-langchain/" target="_blank"><img src="https://static.pepy.tech/badge/databricks-langchain/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/databricks-langchain/" target="_blank"><img src="https://img.shields.io/pypi/v/databricks-langchain?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Chroma | langchain-chroma | <a href="https://pypi.org/project/langchain-chroma/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-chroma/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-chroma/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-chroma?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Groq | langchain-groq | <a href="https://pypi.org/project/langchain-groq/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-groq/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-groq/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-groq?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Huggingface | langchain-huggingface | <a href="https://pypi.org/project/langchain-huggingface/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-huggingface/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-huggingface/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-huggingface?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Azure AI | langchain-azure-ai | <a href="https://pypi.org/project/langchain-azure-ai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-azure-ai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-azure-ai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-azure-ai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| MongoDB | langchain-mongodb | <a href="https://pypi.org/project/langchain-mongodb/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-mongodb/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-mongodb/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-mongodb?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| LiteLLM | langchain-litellm | <a href="https://pypi.org/project/langchain-litellm/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-litellm/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-litellm/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-litellm?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | N/A |
| Fireworks | langchain-fireworks | <a href="https://pypi.org/project/langchain-fireworks/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-fireworks/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-fireworks/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-fireworks?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| MistralAI | langchain-mistralai | <a href="https://pypi.org/project/langchain-mistralai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-mistralai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-mistralai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-mistralai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Cohere | langchain-cohere | <a href="https://pypi.org/project/langchain-cohere/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-cohere/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-cohere/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-cohere?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Pinecone | langchain-pinecone | <a href="https://pypi.org/project/langchain-pinecone/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-pinecone/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-pinecone/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-pinecone?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| xAI (Grok) | langchain-xai | <a href="https://pypi.org/project/langchain-xai/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-xai/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-xai/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-xai?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| DeepSeek | langchain-deepseek | <a href="https://pypi.org/project/langchain-deepseek/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-deepseek/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-deepseek/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-deepseek?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Tavily | langchain-tavily | <a href="https://pypi.org/project/langchain-tavily/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-tavily/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-tavily/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-tavily?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Qdrant | langchain-qdrant | <a href="https://pypi.org/project/langchain-qdrant/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-qdrant/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-qdrant/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-qdrant?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Nvidia AI Endpoints | langchain-nvidia-ai-endpoints | <a href="https://pypi.org/project/langchain-nvidia-ai-endpoints/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-nvidia-ai-endpoints/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-nvidia-ai-endpoints/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-nvidia-ai-endpoints?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Milvus | langchain-milvus | <a href="https://pypi.org/project/langchain-milvus/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-milvus/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-milvus/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-milvus?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| IBM | langchain-ibm | <a href="https://pypi.org/project/langchain-ibm/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-ibm/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-ibm/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-ibm?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Elasticsearch | langchain-elasticsearch | <a href="https://pypi.org/project/langchain-elasticsearch/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-elasticsearch/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-elasticsearch/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-elasticsearch?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Perplexity | langchain-perplexity | <a href="https://pypi.org/project/langchain-perplexity/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-perplexity/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-perplexity/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-perplexity?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| DataStax Astra DB | langchain-astradb | <a href="https://pypi.org/project/langchain-astradb/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-astradb/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-astradb/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-astradb?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| OpenRouter | langchain-openrouter | <a href="https://pypi.org/project/langchain-openrouter/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-openrouter/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-openrouter/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-openrouter?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Redis | langchain-redis | <a href="https://pypi.org/project/langchain-redis/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-redis/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-redis/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-redis?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Together | langchain-together | <a href="https://pypi.org/project/langchain-together/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-together/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-together/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-together?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| MCP Toolbox (Google) | toolbox-langchain | <a href="https://pypi.org/project/toolbox-langchain/" target="_blank"><img src="https://static.pepy.tech/badge/toolbox-langchain/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/toolbox-langchain/" target="_blank"><img src="https://img.shields.io/pypi/v/toolbox-langchain?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Google (Community) | langchain-google-community | <a href="https://pypi.org/project/langchain-google-community/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-google-community/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-google-community/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-google-community?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Nebius | langchain-nebius | <a href="https://pypi.org/project/langchain-nebius/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-nebius/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-nebius/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-nebius?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Unstructured | langchain-unstructured | <a href="https://pypi.org/project/langchain-unstructured/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-unstructured/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-unstructured/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-unstructured?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Neo4J | langchain-neo4j | <a href="https://pypi.org/project/langchain-neo4j/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-neo4j/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-neo4j/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-neo4j?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Weaviate | langchain-weaviate | <a href="https://pypi.org/project/langchain-weaviate/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-weaviate/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-weaviate/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-weaviate?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Sambanova | langchain-sambanova | <a href="https://pypi.org/project/langchain-sambanova/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-sambanova/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-sambanova/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-sambanova?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Docling | langchain-docling | <a href="https://pypi.org/project/langchain-docling/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-docling/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-docling/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-docling?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Graph RAG | langchain-graph-retriever | <a href="https://pypi.org/project/langchain-graph-retriever/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-graph-retriever/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-graph-retriever/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-graph-retriever?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ❌ |
| Exa | langchain-exa | <a href="https://pypi.org/project/langchain-exa/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-exa/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-exa/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-exa?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
| Cerebras | langchain-cerebras | <a href="https://pypi.org/project/langchain-cerebras/" target="_blank"><img src="https://static.pepy.tech/badge/langchain-cerebras/month" alt="Downloads per month" noZoom class="rounded not-prose" /></a> | <a href="https://pypi.org/project/langchain-cerebras/" target="_blank"><img src="https://img.shields.io/pypi/v/langchain-cerebras?style=flat-square&label=%20" alt="PyPI - Latest version" noZoom class="rounded not-prose" /></a> | ✅ |
所有提供商
查看所有提供商 或使用搜索字段搜索提供商。