LangChain
last releaseApril 18, 2026
powered byAny (LLM-agnostic)
goblin vibe check:
worth learning if you're building something that needs real agent logic and you're okay spending a weekend just figuring out the architecture
most flexible agent framework. langgraph adds stateful multi-agent graphs. most token-efficient framework in benchmarks. langgraph lets you design complex stateful workflows. steep learning curve — overkill for simple tasks but best for production agents. langsmith for tracing.
cost
free
LangGraph handles stateful agent orchestrationDeep Agents add planning, subagents, and filesystem-backed executionintegrations cover models, tools, retrievers, and vector storesLangSmith adds evals, observability, and deployment around the OSS stack
key features
LangGraph handles stateful agent orchestrationDeep Agents add planning, subagents, and filesystem-backed executionintegrations cover models, tools, retrievers, and vector storesLangSmith adds evals, observability, and deployment around the OSS stack
spec & usage
langchain-ai/langchain was updated Apr 18, 2026
best fit when you need composable agent plumbing more than a turnkey app shell
scope:
codelanguageautomationapilocalcloudopen-source
launchOctober 24, 2022
last releaseApril 18, 2026