A key part of Agent Builder is its memory system. In this article we cover our rationale for prioritizing a memory system, technical details of how we built it, learnings from building the memory system, what the memory system enables, and discuss future work.
New in Agent Builder: all new agent chat, file uploads + tool registry
Today, we're expanding what you can do with LangSmith Agent Builder. It’s an big update built around a simple idea: working with an agent should feel like working with a teammate.We rebuilt Agent Builder around this idea. There is now an always available agent (”
TLDR: Our coding agent went from Top 30 to Top 5 on Terminal Bench 2.0. We only changed the harness. Here’s our approach to harness engineering (teaser: self-verification & tracing help a lot).The Goal of Harness EngineeringThe goal of a harness is to mold the
Clarifai 12.1: Building Production-Ready Agentic AI at Scale
Deploy production agentic AI with public MCP servers on Clarifai. Includes Artifacts for versioned pipeline storage and Pipeline UI improvements. Available in Public Preview.
Every time LLMs get better, the same question comes back: "Do you still need an agent framework?" It's a fair question. We've now built three generations of them, and each one looked different from the last. So here's what we believe:
Interrupt - The Agent Conference by LangChain - is where builders come to learn what's actually working in production. This year, we're bringing together more than 1,000 developers, product leaders, researchers, and founders to share what's coming next for agents—and how
The two patterns by which agents connect sandboxes
Thank you to Nuno Campos from Witan Labs, Tomas Beran and Mikayel Harutyunyan from E2B, Jonathan Wall from Runloop, and Ben Guo from Zo Computer for their review and comments.TL;DR:More and more agents need a workspace: a computer where they can run code, install packages, and access
LangSmith is Now Available in Google Cloud Marketplace
Today, we're thrilled to announce that LangSmith, the agent engineering platform from LangChain, is available in Google Cloud Marketplace. Google Cloud customers can now procure LangSmith through their existing Google Cloud accounts, enabling seamless billing, simplified procurement, and the ability...
Memory isn't just a feature for AI applications—it's infrastructure. As agents scale, the limited loop of stateless interactions breaks down, and continuity becomes a systems problem that requires active maintenance.
Weaviate in 2025: Reliable Foundations for Agentic Systems
2025 was a defining year for us at Weaviate. Instead of chasing shiny features, we focused on an overarching goal - upgrading our infrastructure and technology in order to better support AI systems.
By Chester Curme and Mason DaughertyAs the addressable task length of AI agents continues to grow, effective context management becomes critical to prevent context rot and to manage LLMs’ finite memory constraints.The Deep Agents SDK is LangChain’s open source, batteries-included agent harness. It p...
By Chester Curme and Mason DaughertyAs the addressable task length of AI agents continues to grow, effective context management becomes critical to prevent context rot and to manage LLMs’ finite memory constraints.The Deep Agents SDK is LangChain’s open source, batteries-included agent harness. It p...
Building Multi-Agent Applications with Deep Agents
Breaking down complex tasks across specialized agents is one of the most effective approaches to building capable AI systems. In this post, we'll show you how to build multi-agent systems with Deep Agents.
Artificial Intelligence has come a long way in recent years. From chatbots that answer questions to AI systems that compose music or create art, machines are beginning to mimic some aspects of human intelligence. But one question fascinates scientists, technologists, and the general public alike: Ca...