#LangChain
58 articles with this tag
Agent Development
AutoGen vs LangChain: Which for Multi-Agent Systems in 2026?
AutoGen vs LangChain for multi-agent systems in 2026 — feature comparison, same use case in both frameworks, and an honest verdict on when each wins.
May 31, 2026 10 min read
Agent Development
AutoGPT vs LangChain Agents: Which is More Autonomous?
Compare AutoGPT's zero-shot autonomy against LangChain's ReAct agents. Discover which handles complex tasks better and when to choose each framework.
May 31, 2026 12 min read
Agent Development
10 LangChain Retrieval Strategies for Better RAG Results
Go beyond basic similarity search with ParentDocumentRetriever, MultiQueryRetriever, EnsembleRetriever, HyDE, and 6 more LangChain retrieval strategies — with code for each.
May 31, 2026 13 min read
Agent Development
Build a LangChain Agent with Memory and Tools (Full Example)
Build a complete LangChain conversational agent with persistent memory, multiple tools, and step-by-step trace — from setup to a production-ready implementation with code.
May 31, 2026 14 min read
Agent Development
5 LangChain Agent Types Explained (ZeroShot, ReAct, and More)
Understand every major LangChain agent type — ZeroShotAgent, ReAct, ConversationalAgent, and more — with Python code and agent trace walkthroughs.
May 31, 2026 13 min read
Agent Development
How to Deploy a LangChain App as a FastAPI REST Endpoint
Serve a LangChain app as a production FastAPI REST endpoint with streaming, async chains, error handling, and Docker deployment — full Python code included.
May 31, 2026 11 min read
Agent Development
How to Use LangChain with Azure OpenAI Service (Enterprise)
Connect LangChain to Azure OpenAI Service for enterprise deployments. Covers AzureChatOpenAI, managed identity, embeddings, content filtering, and a comparison table.
May 31, 2026 11 min read
Agent Development
7 LangChain Callbacks: Logging, Tracing, and Streaming (2026)
Master 7 LangChain callbacks including StdOutCallbackHandler, LangSmith tracing, custom callbacks, streaming tokens, and token usage monitoring with working Python examples.
May 31, 2026 12 min read
Agent Development
7 LangChain Callbacks for Token Usage and Cost Tracking
Track OpenAI API spend with LangChain callbacks — get_openai_callback, custom cost trackers, per-chain breakdowns, budget alerts, and monthly cost estimation.
May 31, 2026 13 min read
Agent Development
10 LangChain Chains You Must Know (LLMChain to RouterChain)
Master all major LangChain chain types — LLMChain, SequentialChain, RouterChain, and more — with real Python code and a guide on when to use each.
May 31, 2026 15 min read
Agent Development
5 LangChain Checkpointers: Save and Load Agent State (2026)
Learn how to persist and restore LangChain agent state using InMemoryCheckpointer, SqliteSaver, and PostgresSaver with full Python code examples.
May 31, 2026 12 min read
Agent Development
How to Use LangChain with ChromaDB (Local Vector Store)
Use LangChain with ChromaDB for persistent local embeddings — setup, metadata filtering, similarity search, and collection management with full Python code.
May 31, 2026 11 min read
Agent Development
Build a LangChain Agent for Code Generation and Auto-Fix
Build a LangChain coding assistant that writes Python code, runs it in a sandbox, captures errors, and auto-fixes bugs in a write→test→fix loop with full code.
May 31, 2026 14 min read
Agent Development
Build a LangChain Customer Support Agent with Knowledge Base
Build a production LangChain customer support agent: KB ingestion, intent classification, RAG retrieval, escalation logic, and feedback collection in Python.
May 31, 2026 13 min read
Agent Development
10 LangChain Document Compressors to Reduce Context Length
Learn 10 LangChain document compressors that slash context length, cut LLM costs, and keep RAG pipelines fast and accurate in production.
May 31, 2026 14 min read
Agent Development
5 LangChain Document Loaders: S3, Notion, YouTube, Twitter
A practical guide to LangChain's S3FileLoader, NotionDirectoryLoader, YoutubeLoader, TwitterTweetLoader, and building custom API loaders with real code examples.
May 31, 2026 11 min read
Agent Development
Build a LangChain Document Q&A System (PDF, HTML, DOCX)
Build a complete LangChain document Q&A system that loads PDF, HTML, and DOCX files with PyPDFLoader, RecursiveCharacterTextSplitter, and a full retrieval pipeline.
May 31, 2026 11 min read
Agent Development
7 LangChain Document Transformers (Splitters, Filters, Embeddings)
Master LangChain document transformers to preprocess documents for RAG — splitters, filters, embeddings, and redundancy removal in Python.
May 31, 2026 15 min read
Agent Development
5 LangChain Entity Extraction and Memory (EntityStore)
Track entities across conversations with LangChain's ConversationEntityMemory and EntityStore backends — build chatbots that remember people, places, and facts.
May 31, 2026 2 min read
Agent Development
LangChain Expression Language (LCEL): The Complete Guide
Master LangChain Expression Language (LCEL) with complete examples of pipe syntax, RunnableSequence, RunnableParallel, streaming, batching, and async invocation.
May 31, 2026 11 min read
Agent Development
Build a LangChain Agent for Financial Data Analysis (2026)
Build a LangChain stock analysis agent using Yahoo Finance, SEC EDGAR, and custom financial ratio tools — with a full comparison of financial data sources.
May 31, 2026 10 min read
Agent Development
How to Use LangChain with Hugging Face (Local LLMs 2026)
Run open source LLMs locally with LangChain and Hugging Face. Complete guide covering HuggingFacePipeline, Llama, Mistral, and sentence-transformers embeddings.
May 31, 2026 12 min read
Agent Development
5 LangChain Indexing APIs: Record Manager and Upsert (2026)
Master LangChain's Indexing API with RecordManager for deduplication, incremental sync, and deletion cleanup in production vector store pipelines.
May 31, 2026 14 min read
Agent Development
How to Use LangChain with LanceDB (Serverless Embeddings)
Set up LanceDB as a serverless, open-source vector database with LangChain. Covers local and cloud modes, IVF_PQ indexing, ANN search, and a full RAG example.
May 31, 2026 14 min read
Agent Development
How to Use LangSmith for Debugging LangChain Apps (2026)
Learn how to use LangSmith to trace, debug, and evaluate LangChain apps — with run inspection, dataset creation, A/B testing chains, and a practical debugging workflow.
May 31, 2026 12 min read
Agent Development
10 LCEL Patterns: RunnableParallel and RunnableLambda (2026)
Master LangChain LCEL with 10 real patterns for RunnableParallel, RunnableLambda, branching, fan-out, and streaming with full Python code examples.
May 31, 2026 11 min read
Agent Development
How to Implement Memory in LangChain (Buffer, Summary, Vector)
Learn every major LangChain memory type — ConversationBufferMemory, SummaryMemory, VectorStoreMemory, and EntityMemory — with working code and a comparison table.
May 31, 2026 14 min read
Agent Development
5 LangChain Message Types: Human, AI, System, Tool Messages
Master LangChain message types for accurate chat history formatting. Complete guide to HumanMessage, AIMessage, SystemMessage, ToolMessage with code examples.
May 31, 2026 13 min read
Agent Development
How to Use LangChain with Modal (Serverless GPU 2026)
Deploy LangChain pipelines on Modal's serverless GPU infrastructure — run local LLMs, scale to zero, and cut inference costs with cold-start optimization.
May 31, 2026 10 min read
Agent Development
How to Implement Multi-Turn Conversations with LangChain
Learn how to build conversational agents with persistent memory using LangChain's ConversationBufferMemory, RunnableWithMessageHistory, and a FastAPI chatbot endpoint.
May 31, 2026 13 min read
Agent Development
How to Use LangChain with OpenAI API (ChatGPT + Tools)
Set up LangChain with the OpenAI API — configure ChatOpenAI, implement function calling, bind tools, and run parallel tool calls in a production-ready setup.
May 31, 2026 13 min read
Agent Development
7 LangChain Output Fixer and Retry Strategies (2026)
Stop losing data to malformed LLM outputs. Learn 7 LangChain error recovery strategies including OutputFixingParser, RetryOutputParser, fallbacks, and exponential backoff.
May 31, 2026 13 min read
Agent Development
5 LangChain Output Parsers: JSON, Pydantic, CSV and More
Learn to use all 5 essential LangChain output parsers — JsonOutputParser, PydanticOutputParser, CSV, Datetime, and StructuredOutputParser — with complete code examples.
May 31, 2026 12 min read
Agent Development
Build a LangChain Agent for Data Analysis with Pandas
Build a LangChain pandas agent that answers natural language questions about your data, generates charts, and writes Python code — full working tutorial.
May 31, 2026 12 min read
Agent Development
How to Use LangChain with Pinecone Serverless (Cloud RAG)
Deploy cloud-native RAG with LangChain and Pinecone Serverless. Complete guide covering setup, upsert, query, namespaces, metadata filtering, and cost estimates.
May 31, 2026 11 min read
Agent Development
10 LangChain Prompt Templates (Few-Shot, Chat, Partial)
Build reusable LangChain prompts with PromptTemplate, ChatPromptTemplate, FewShotPromptTemplate, and partial variables — 10 practical patterns with Python code.
May 31, 2026 12 min read
Agent Development
5 LangChain RAG Evaluation Metrics with Ragas (2026)
Evaluate your LangChain RAG pipeline with Ragas: faithfulness, answer relevancy, context recall, context precision, and answer correctness — full Python code.
May 31, 2026 13 min read
Agent Development
10 LangChain RAG Evaluation with Ragas (Metrics and Datasets)
Evaluate your LangChain RAG pipelines with Ragas: faithfulness, answer relevancy, context recall, TestsetGenerator, and CI/CD integration for production quality.
May 31, 2026 10 min read
Agent Development
How to Build a RAG Pipeline with LangChain (Step-by-Step)
Build a complete RAG pipeline with LangChain, Chroma, and OpenAI embeddings — document loading, chunking, vector storage, and retrieval in one guide.
May 31, 2026 13 min read
Agent Development
10 LangChain Real-World Projects (Email, Research, Data)
Build 10 real LangChain projects from email automation to research agents and data analysis tools. Complete code snippets plus difficulty and time estimates.
May 31, 2026 18 min read
Agent Development
How to Use LangChain with Redis (Cache and Vector Store)
Use LangChain with Redis for low-latency AI responses. Covers RedisCache, RedisSemanticCache, RedisVL vector search, and a Redis vs alternatives comparison.
May 31, 2026 10 min read
Agent Development
10 LangChain RAG Rerankers: Cohere, Cross-Encoder and More
Improve RAG relevance with LangChain rerankers — CohereRerank, CrossEncoderReranker, FlashrankRerank, RankGPT, and more, with BEIR benchmark results and code.
May 31, 2026 12 min read
Agent Development
Build a LangChain Research Assistant for ArXiv and PubMed
Build an AI research assistant that searches ArXiv and PubMed, synthesizes findings, and formats citations automatically. Full Python code included.
May 31, 2026 12 min read
Agent Development
7 LangChain Retriever Ensembles (Hybrid, Weighted Fusion)
Combine multiple retrievers in LangChain using EnsembleRetriever, BM25 fusion, and Reciprocal Rank Fusion to build higher-accuracy RAG pipelines.
May 31, 2026 17 min read
Agent Development
Build a LangChain SQL Agent for Text-to-SQL Queries (2026)
Build a LangChain SQL agent that converts natural language to accurate SQL queries — with few-shot prompting, JOIN handling, security safeguards, and a working demo endpoint.
May 31, 2026 13 min read
Agent Development
7 LangChain Streaming Examples (Stream Tokens to UI)
Master LangChain streaming with 7 real examples: .stream(), .astream(), astream_events(), FastAPI SSE endpoints, and React token consumers for real-time AI output.
May 31, 2026 10 min read
Agent Development
10 LangChain Text Splitters: Recursive, Markdown, Code (2026)
A practical guide to all 10 LangChain text splitters — Recursive, Markdown, Code, HTML, Semantic, Token — with comparison table and chunking best practices.
May 31, 2026 16 min read
Agent Development
10 LangChain Toolkits: SQL, Playwright, GitHub, Slack (2026)
Explore 10 LangChain toolkits including SQLDatabaseToolkit, PlaywrightBrowserToolkit, GitHubToolkit, and SlackToolkit with full Python code and comparison table.
May 31, 2026 12 min read
Agent Development
10 LangChain Tools: Web Search, Calculator, Python REPL
Master 10 essential LangChain tools including SerpAPI, TavilySearch, Calculator, Python REPL, and custom tools with @tool decorator for building AI agents.
May 31, 2026 13 min read
Agent Development
LangChain Tutorial for Beginners: Build Your First LLM App
Learn LangChain from scratch. Install the library, write your first LLMChain, and build a real LLM app with PromptTemplate and ChatOpenAI in Python.
May 31, 2026 15 min read
Agent Development
5 LangChain Vector Store Retrievers (MMR, Similarity, Compression)
Master LangChain's 5 core retriever types — SimilaritySearch, MMR, ContextualCompression, MultiVectorRetriever, and SelfQueryRetriever — with code, benchmarks, and guidance.
May 31, 2026 14 min read
Agent Development
7 Vector Stores Compatible with LangChain (Ranked 2026)
Compare Pinecone, Weaviate, FAISS, Chroma, Milvus, Qdrant, and PGVector for LangChain RAG — with code snippets, cost breakdown, and honest recommendations.
May 31, 2026 12 min read
Agent Development
How to Use LangChain with Vertex AI (Google Gemini 2026)
Integrate LangChain with Google Vertex AI and Gemini models. Complete guide covering ChatVertexAI, embeddings, multimodal inputs, function calling, and cost comparison.
May 31, 2026 12 min read
Agent Development
LangChain vs AutoGen: Which Agent Framework in 2026?
An honest comparison of LangChain and AutoGen for multi-agent orchestration — feature tables, same task coded in both frameworks, and a clear verdict on when to use each.
May 31, 2026 11 min read
Agent Development
LangChain vs LlamaIndex: Which is Better for RAG in 2026?
LangChain vs LlamaIndex: an honest 2026 comparison of RAG capabilities, indexing strategies, query engines, community size, and when to choose each framework.
May 31, 2026 12 min read
Agent Development
How to Use LangChain with Weaviate (Hybrid Search 2026)
Connect LangChain to Weaviate for hybrid vector and keyword search. Covers local and cloud setup, nearText, BM25, metadata filtering, and a comparison table.
May 31, 2026 11 min read
Agent Development
How to Build a LangChain Agent That Browses the Web (2026)
Learn to build a LangChain web browsing agent using Playwright, newspaper3k, and FireCrawl with rate limiting, multi-page crawling, and real code examples.
May 31, 2026 12 min read
Agent Development
Build a LangChain Agent That Summarizes YouTube Videos
Build a full LangChain agent that loads YouTube transcripts, falls back to Whisper, and summarizes long videos with MapReduceDocumentsChain and GPT-4o.
May 31, 2026 21 min read
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