--- title: Best LangChain posts — September 2024 | daily.dev description: The most upvoted LangChain posts from September 2024, curated by the daily.dev community. canonical: https://daily.dev/sources/langchain/best-of/2024/09 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/langchain/best-of/2024/09 og:type: website og:site_name: daily.dev og:title: Best LangChain posts — September 2024 | daily.dev og:description: The most upvoted LangChain posts from September 2024, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of LangChain — September 2024 1. 1 [](https://daily.dev/posts/announcing-langchain-v0-3-vyhx7emft "Announcing LangChain v0.3") Article LangChain · 2y Announcing LangChain v0.3 LangChain v0.3 has been released, introducing significant changes for both Python and JavaScript users. In Python, all packages are upgraded to Pydantic 2, with Pydantic 1 and Python 3.8 support ending in 2024\. In the JavaScript ecosystem, LangChain packages now use '@langchain/core' as a peer dependency, and callbacks are non-blocking by default. Multiple deprecated entry points and objects have been removed. The release also includes new integrations, revamped documentation, additional utilities for chat models, and a simplified tool definition. Guides are available for migration, and LangGraph remains the recommended way to build agents. 34 2. 2 [](https://daily.dev/posts/building-a-data-visualization-agent-with-langgraph-cloud-asrxvkzce "Building a Data Visualization Agent with LangGraph Cloud") Article LangChain · 2y Building a Data Visualization Agent with LangGraph Cloud Explore how to build a data visualization agent using LangGraph Cloud. This guide explains the step-by-step workflow, including schema extraction, SQL query generation, and choosing appropriate visualizations. It demonstrates handling smaller datasets without complex techniques like RAG or LSH and provides code snippets for implementing various parts of the workflow. 25 [See all LangChain archives](/sources/langchain/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/langchain/best-of/2024/09#page","url":"https://daily.dev/sources/langchain/best-of/2024/09","name":"Best LangChain Posts — September 2024","description":"The most upvoted LangChain posts from September 2024, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/langchain/best-of/2024/09#items","numberOfItems":2,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/announcing-langchain-v0-3-vyhx7emft","name":"Announcing LangChain v0.3"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/building-a-data-visualization-agent-with-langgraph-cloud-asrxvkzce","name":"Building a Data Visualization Agent with LangGraph Cloud"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"LangChain","item":"https://daily.dev/sources/langchain"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/langchain/best-of"},{"@type":"ListItem","position":5,"name":"September 2024"}]}]} ```