Deep Agents
Coding agentsLangChain
Deep Agents is LangChain's open-source agent harness with sub-agents, a filesystem, shell access and memory, plus a terminal coding agent.
- Open source (MIT)
- Python and TypeScript
- Sub-agents
- Terminal coding agent
At a glance
Deep Agents is in the directory but not on our ranked shortlists, and we have no traction figure for it yet.
Key facts
As of Nov 12, 2026
- Who it's for
- Developers building long-horizon agents on LangGraph who want a ready-made harness to extend.
- What does it do?
- An opinionated agent harness that runs out of the box: sub-agents with isolated context, a pluggable filesystem, shell access, context summarizing, persistent memory, human-in-the-loop approvals and skills. Deep Agents Code is a pre-built terminal coding agent on top of it.
- What does it cost?
- Free and open source under MIT. Tracing, evaluation and deployment run through LangSmith, which is a separate product.
- Where does it run?
- As a Python library (uv add deepagents) or a JavaScript/TypeScript library, with local, sandboxed or remote backends. Deep Agents Code installs with a shell script.
- Which models does it work with?
- Any LLM that supports tool calling: frontier, open-weight or local. Tools can be your own functions or any MCP server.
- Who makes it?
- LangChain (GitHub org langchain-ai). Built on LangGraph.
Common questions
What is Deep Agents?
Deep Agents is LangChain's open-source agent harness with sub-agents, a filesystem, shell access and memory, plus a terminal coding agent.
Who is Deep Agents for?
Developers building long-horizon agents on LangGraph who want a ready-made harness to extend.
How much does Deep Agents cost?
Free and open source under MIT. Tracing, evaluation and deployment run through LangSmith, which is a separate product. Checked against the vendor's pages on Nov 12, 2026. Plans change often, so confirm before you decide.
Does Deep Agents run locally or in the cloud?
Deep Agents runs in the vendor's cloud. You use it through chat apps and an API.
What are alternatives to Deep Agents?
See the Coding agents shortlist for the other options.
Compare Deep Agents
No head-to-head pages for this one yet.