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Agent Middleware

Agent Middleware

LangChain has had agent abstractions for nearly three years. There are now probably 100s of agent frameworks with the same core abstraction. They all suffer

5 min read
Building LangGraph: Designing an Agent Runtime from first principles

Building LangGraph: Designing an Agent Runtime from first principles

In this blog piece, you’ll learn why and how we built LangGraph for production agents—focusing on control, durability, and the core features needed to scale.

15 min read
Standard message content

Standard message content

TLDR: We’ve introduced a new view of message content that standardizes reasoning, citations, server-side tool calls, and other modern LLM features across providers. This

3 min read
LangChain & LangGraph 1.0 alpha releases

LangChain & LangGraph 1.0 alpha releases

Today we are announcing alpha releases of v1.0 for langgraph and langchain, in both Python and JS. LangGraph is a low-level agent orchestration framework,

3 min read
Introducing Open SWE: An Open-Source Asynchronous Coding Agent

Introducing Open SWE: An Open-Source Asynchronous Coding Agent

The use of AI in software engineering has evolved over the past two years. It started as autocomplete, then went to a copilot in an

7 min read
Deep Agents

Deep Agents

Using an LLM to call tools in a loop is the simplest form of an agent. This architecture, however, can yield agents that are “shallow”

In the Loop 3 min read
Introducing Align Evals: Streamlining LLM Application Evaluation

Introducing Align Evals: Streamlining LLM Application Evaluation

Align Evals is a new feature in LangSmith that helps you calibrate your evaluators to better match human preferences.

3 min read
How Bertelsmann Built a Multi-Agent System to Empower Creatives

How Bertelsmann Built a Multi-Agent System to Empower Creatives

See how one of the world’s biggest media companies leveraged LangGraph from its earliest days to build and deploy a multi-agent system to production that empowers creativity.

Case Studies 6 min read
Why agent infrastructure matters

Why agent infrastructure matters

Learn why agent infrastructure is essential to handling stateful, long-running tasks — and how LangGraph Platform provides the runtime support needed to build and scale reliable agents.

4 min read
LangSmith and LangGraph Platform are now available in AWS Marketplace

LangSmith and LangGraph Platform are now available in AWS Marketplace

LangSmith and LangGraph Platform (self-hosted deployments) are now available in AWS Marketplace.

3 min read
Open Deep Research

Open Deep Research

TL;DR Deep research has broken out as one of the most popular agent applications. OpenAI, Anthropic, Perplexity, and Google all have deep research products

8 min read
How to Build an Agent

How to Build an Agent

Learn how to build an agent -- from choosing realistic task examples, to building the MVP to testing quality and safety, to deploying in production.

6 min read

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