Agents are the New Developer Agents, like Claude Code, feel uncanny. My first time using it, I built a mobile web app that tracked pushups using computer vision. Just for fun, to see what it could do. One hour later (mostly its time, not mine), I had an app that just worked.

🎂LangChain turned 3️⃣ this week! It's been three years since the langchain Python package was released into the wild, and as LangChain has grown, our community has grown alongside us. Thank you for building with us, hosting events with us, creating content, sharing feedback, and

Insights!!!

"RAG is dead" lol context fetching is still a really hard problem and extremely difficult to optimize

Today we're releasing 0.2 of deep agents 📁The main addition here is a "backend" abstraction, which allows you to swap out the filesystem that deep agents use. Can be local filesystem, a database, remote vm, anything Agent Harnesses like deep agents are becoming more important

LangSmith Agent Builder is our no code agent builder for anyone to create an agent, now available in private preview. This is not a workflow builder. Built on our Deep Agents architecture, LangSmith Agent Builder handles planning, memory, and sub-agents automatically. This means

Deep Agents repo is without a doubt the best resource to understand the next generation SOTA agents architecture. The LangChain team has done an amazing job simplifying the concepts behind those agents capable of long horizon tasks. Knowing this repo is a must for every

5/ Sonya Huang 🐥 whose bulldog-style truth-seeking raises the bar on decisions, whose keen sniffer and aggressive proactivity put us squarely in front of the AI wave, whose brilliant mind can solve any puzzle, whose fast fingers make her the undefeated Sequoia wpm typing

A Privy LangChain collab for the ages ♥️

!!!! Waka Flocka Flame 🔥 is building on Privy 🤯

Max Segall Y'all built something that make crypto so much easier for everybody, couldn't imagine it any other way 💯

Calling all devs and AI builders: help shape the 2025 State of Agent Engineering report. Share how you're building agents — your agent architectures, evals you're running, model choices, and biggest blockers to production. We'll analyze responses from the community and publish

🚀 LangSmith Agent Builder is now available in Public Beta Now anyone can create production ready agents without writing code, just chat. Agent Builder guides you from initial idea to deployed agent, creating detailed prompts, selecting required tools, and even creating

Today, we're excited to share that we have raised a $140M Series D, welcoming new investors Sequoia Capital, Kleiner Perkins and NVIDIA alongside the continued support of our existing partners!

In case you haven't been following.... LangGraph.js just passed 1,000,000 downloads a week! This is double the weekly downloads from just 40 days ago! The team has been working insanely hard on making LangGraph the best agent orchestration framework out there, and the download

🦜Meet Polly - your new AI assistant for agent engineering We're launching Polly in LangSmith today. It can help with three workflows that are becoming increasingly popular for debugging agents: 1. Debug a trace 2. Suggest prompt improvements 3. Analyze a conversation 🧵

A Jason Ginsberg from Cursor and LangChain collab! Not enough people talking about the Horace Mann AI effect!

🔍OpenRouter just made observability even easier. Their new Broadcast feature lets you send all your traces directly to LangSmith with no code changes required — whether you’re tracing with LangChain, provider SDKs, or the OpenRouter SDK. Demo: youtube.com/watch?v=2EBPg4… Docs: