LangChainAI's profile picture. The platform for agent engineering.

LangChain

@LangChainAI

The platform for agent engineering.

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We raised $125M to build the platform for agent engineering. Thank you to our investors (@IVP, @sequoia, @benchmark, @AmplifyPartners, @SapphireVC, @CapitalG, and more) for their belief in us, and to our customers like @Replit, @clay, @TrustVanta, @Cloudflare, @Rippling, @Cisco,…


Excited to see FlowAgent by @TearlineAI live — it's built on LangChain and LangGraph, and helps folks orchestrate complex Web3 tasks.

@TearlineAI × @LangChainAI DeFi meets AI. Powered by LangChain, our flagship FlowAgent makes multi-agent workflows visual, modular, and maintainable, with built-in persistence and cost-efficient execution. We built a PDCA Agent that plans, checks, and delivers verified DeFi…

TearlineAI's tweet image. @TearlineAI × @LangChainAI 

DeFi meets AI.

Powered by LangChain, our flagship FlowAgent makes multi-agent workflows visual, modular, and maintainable, with built-in persistence and cost-efficient execution.

We built a PDCA Agent that plans, checks, and delivers verified DeFi…


✈️ AI Travel Agent Guide A production-ready Streamlit travel assistant built with LangChain agents, featuring weather info, search capabilities, and video integration. The guide covers API setup, deployment options, and performance optimization. Explore the guide 👉…

LangChainAI's tweet image. ✈️ AI Travel Agent Guide

A production-ready Streamlit travel assistant built with LangChain agents, featuring weather info, search capabilities, and video integration. The guide covers API setup, deployment options, and performance optimization.

Explore the guide 👉…

🎓 LangChain Deep Dive Eric Burel shows developers how to build AI applications using the LangChain ecosystem in this hands-on tutorial. Key features: - Chain & agent construction - LangGraph orchestration - LangSmith monitoring 📺 Watch now: youtu.be/0ImjWIo5fyM Made by…

LangChainAI's tweet image. 🎓 LangChain Deep Dive

Eric Burel shows developers how to build AI applications using the LangChain ecosystem in this hands-on tutorial. 

Key features:
- Chain & agent construction
- LangGraph orchestration
- LangSmith monitoring

📺 Watch now: youtu.be/0ImjWIo5fyM
Made by…

Agent Engineering with LangChain 1.0 (Community hosted event) @AIMakerspace is hosting an event to walk through the recent 1.0 announcement! Expect walkthroughs of the agent engineering ecosystem, from simple to complex luma.com/7zyeu70f

LangChainAI's tweet image. Agent Engineering with LangChain 1.0

(Community hosted event)

@AIMakerspace is hosting an event to walk through the recent 1.0 announcement!

Expect walkthroughs of the agent engineering ecosystem, from simple to complex

luma.com/7zyeu70f

📊🤖 Stock Research Agent V3 (Made by the LangChain Community) An AI platform transforming financial research, leveraging LangGraph and LangSmith for agent collaboration and real-time monitoring while delivering 73% cost savings. Check it out on GitHub! 🚀…

LangChainAI's tweet image. 📊🤖 Stock Research Agent V3

(Made by the LangChain Community)

An AI platform transforming financial research, leveraging LangGraph and LangSmith for agent collaboration and real-time monitoring while delivering 73% cost savings.

Check it out on GitHub! 🚀…

📅🤖 Event Deep Research (Made by the LangChain Community) An AI-powered system that generates historical timelines using LangGraph's multi-agent architecture. Automatically researches and compiles comprehensive JSON timelines of significant life events. Explore this…

LangChainAI's tweet image. 📅🤖 Event Deep Research

(Made by the LangChain Community)

An AI-powered system that generates historical timelines using LangGraph's multi-agent architecture. Automatically researches and compiles comprehensive JSON timelines of significant life events.

Explore this…

💰🔧 TokenCrush for LangGraph (Made by the LangChain Community) TokenCrush extension reduces LangGraph application costs by up to 90% while preserving meaning. Integrates with LangGraph to optimize RAG pipelines and production AI apps with minimal code changes. Discover how to…

LangChainAI's tweet image. 💰🔧 TokenCrush for LangGraph

(Made by the LangChain Community)

TokenCrush extension reduces LangGraph application costs by up to 90% while preserving meaning. Integrates with LangGraph to optimize RAG pipelines and production AI apps with minimal code changes.

Discover how to…

⌨️ AMA w/ @hwchase17! 🗓️ Nov 13 (8AM PST) → Nov 14 (6PM PST) 📍 LangChain Forum Ask about:  • LangChain → LangSmith → LangGraph ⚙️  • Oct launches & new features 🆕  • Future of agents 🔮✨ Drop questions now 👇 forum.langchain.com/t/im-harrison-… RSVP for reminders:…


SUPER EXCITED to be working with @privy_io on wallets to enable agentic commerce! fun collab between @MaxSegall and @j_schottenstein -- crypto + ai agents in 1 household coming together for a partnership 🤝

1/ AI agents can now pay with stablecoins. We’ve teamed up with @LangChainAI, the leading agent framework, to seamlessly provision wallets for agents so they can transact onchain. Stablecoins are programmable money. Privy makes them safe for agents to use. Here's how 👇

privy_io's tweet image. 1/ AI agents can now pay with stablecoins.

We’ve teamed up with @LangChainAI, the leading agent framework, to seamlessly provision wallets for agents so they can transact onchain.

Stablecoins are programmable money. Privy makes them safe for agents to use.

Here's how 👇


LangChain reposted

1/ AI agents can now pay with stablecoins. We’ve teamed up with @LangChainAI, the leading agent framework, to seamlessly provision wallets for agents so they can transact onchain. Stablecoins are programmable money. Privy makes them safe for agents to use. Here's how 👇

privy_io's tweet image. 1/ AI agents can now pay with stablecoins.

We’ve teamed up with @LangChainAI, the leading agent framework, to seamlessly provision wallets for agents so they can transact onchain.

Stablecoins are programmable money. Privy makes them safe for agents to use.

Here's how 👇

🧑‍🔬 Building a Typescript deep research agent In this video, we will walk through how to easily build a Typescript deep research agent This builds upon our new DeepAgents library All it involves is some detailed prompting, some search tools, and some specialized sub agents…

LangChainAI's tweet image. 🧑‍🔬 Building a Typescript deep research agent

In this video, we will walk through how to easily build a Typescript deep research agent

This builds upon our new DeepAgents library

All it involves is some detailed prompting, some search tools, and some specialized sub agents…

Excellent walkthrough of how to build a streaming agent in @nextjs using LangChain. Clear explanation of server-sent events, UI streaming, and memory via thread IDs. If you’re evaluating production agent architectures, this is a strong reference implementation. 👇 Watch the…

LangChainAI's tweet card. Build a Streaming LangChain Agent in Next.js with useStream

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Build a Streaming LangChain Agent in Next.js with useStream

New video: Build a streaming @LangChainAI agent in @nextjs using useStream + memory 🚀 You’ll learn: - stream AI replies into your UI with useStream - Minimal API route serving SSE - Add conversation memory via thread id + checkpointer 🎥 Watch now: youtube.com/watch?v=piK5WT…

bromann's tweet image. New video: Build a streaming @LangChainAI agent in @nextjs using useStream + memory 🚀 You’ll learn:

- stream AI replies into your UI with useStream
- Minimal API route serving SSE
- Add conversation memory via thread id + checkpointer

🎥 Watch now: youtube.com/watch?v=piK5WT……


🤖 Deep Agents JS Deep Agents is now available in JS! Written on top of LangChain and LangGraph 1.0, this brings the power of agents harnesses to the JS ecosystem Comes with planning tools, subagents, and filesystem access Try it out now: npm i deepagents Repo:…

LangChainAI's tweet image. 🤖 Deep Agents JS

Deep Agents is now available in JS! Written on top of LangChain and LangGraph 1.0, this brings the power of agents harnesses to the JS ecosystem

Comes with planning tools, subagents, and filesystem access

Try it out now: npm i deepagents

Repo:…

As we've consolidated our docs and shipped 1.0 versions of LangChain and LangGraph, we also rebuilt Chat LangChain from the ground up — now cleaner, faster, and more accurate. Chat LangChain is a chatbot that answers questions about LangChain resources, including our docs and…

LangChainAI's tweet image. As we've consolidated our docs and shipped 1.0 versions of LangChain and LangGraph, we also rebuilt Chat LangChain from the ground up — now cleaner, faster, and more accurate.

Chat LangChain is a chatbot that answers questions about LangChain resources, including our docs and…

Over the next few weeks we'll be releasing a series of deep dive videos into our new prebuilt agent middlewares. We're starting off with one the most popular middlewares, human-in-the-loop! Require approval on sensitive tool calls before execution in just 1 LOC!

🎬 Starting TODAY: our new LangChain middleware series! One deep-dive video per day covering @LangChainAI's prebuilt middleware options. 👤 Day 1: Human-in-the-Loop Middleware Use this to require human review of risky tool calls before execution! youtube.com/watch?v=SpfT6-…

sydneyrunkle's tweet card. Human in the Loop Middleware (Python)

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Human in the Loop Middleware (Python)



Why we built LangSmith for improving agent quality As more agents move into production, teams need to move beyond vibe-checking and bring rigor to how they understand agent behavior at scale. In this video, the LangSmith engineering team and Harrison (@hwchase17) sit down to…


🤖 Synapse: Multi-Agent AI Platform (Made by the LangChain Community) A versatile platform featuring intelligent agents that seamlessly handle web searches, task automation, and complex data analysis through natural language interactions. Explore the project on GitHub 🔗…

LangChainAI's tweet image. 🤖 Synapse: Multi-Agent AI Platform

(Made by the LangChain Community)

A versatile platform featuring intelligent agents that seamlessly handle web searches, task automation, and complex data analysis through natural language interactions.

Explore the project on GitHub 🔗…

🏦 AI Bank Statement Analyzer (Made by the LangChain Community) Transform bank statements into queryable financial insights using AI. This system combines YOLO and LangChain's RAG to enable natural language analysis of your personal finances. Check it out here ⚡…

LangChainAI's tweet image. 🏦 AI Bank Statement Analyzer

(Made by the LangChain Community)

Transform bank statements into queryable financial insights using AI. This system combines YOLO and LangChain's RAG to enable natural language analysis of your personal finances.

Check it out here ⚡…

🧠 MaxKB AI Agents (Made by the LangChain Community) MaxKB is an open-source platform that builds enterprise AI agents using LangChain-powered RAG and workflows. It features multi-modal support and seamless integration with both private and public LLMs. Check it out here 🚀…

LangChainAI's tweet image. 🧠 MaxKB AI Agents

(Made by the LangChain Community)

MaxKB is an open-source platform that builds enterprise AI agents using LangChain-powered RAG and workflows. It features multi-modal support and seamless integration with both private and public LLMs.

Check it out here 🚀…

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