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Overview

Subagent streaming
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MCP with LangChain
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Overview

Install
Quickstart
Changelog
Philosophy

Agents
Models
Messages
Tools
Short-term memory
Event streaming
Streaming
Structured output

Overview
Prebuilt middleware
Custom middleware

Overview

Markdown messages
Tool calling
Headless tools
Human-in-the-Loop
Branching chat
Reasoning tokens
Structured output
Message queues
Join & rejoin streams
Time travel

Overview
Controlled
Declarative
Open-ended

Overview
CopilotKit
AI Elements
assistant-ui
OpenUI

Guardrails
Runtime
Context engineering
Human-in-the-loop
Retrieval
Long-term memory

Overview
Tools
Connections
Authentication

Overview
Subagents
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LangSmith Studio
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Overview
Unit testing
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Overview
Studio

Install
Quickstart
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Thinking in LangGraph
Workflows + agents

Persistence
Fault tolerance
Checkpointers
Stores
Event streaming
Streaming
Interrupts
Time travel
Memory
Subgraphs

Application structure
Test
Backward compatibility
LangSmith Studio
Agent Chat UI
Deployment
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Overview
Graph execution
Custom stream channels

Runtime

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DeepSeek integrations

DeepSeek is a Chinese artificial intelligence company that develops LLMs.

Chat models

DeepSeek chat models.

Get started

Adapted from docs.langchain.com/oss/python/integrations/providers/deepseek by LangChain, licensed under MIT. Changes were made: this page is re-rendered from the original's source.

Translation © 2026 fanyi.dev · Original © 2026 LangChain (MIT)

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