# Deep Agents [Coding agents](https://www.agentlist.io/categories/cli-agent)LangChain[Last checked Nov 12, 2026](https://www.agentlist.io/changelog) Deep Agents is LangChain's open-source agent harness with sub-agents, a filesystem, shell access and memory, plus a terminal coding agent. [Visit Deep Agents](https://docs.langchain.com/deepagents) - [docs.langchain.com/deepagents](https://docs.langchain.com/deepagents) - [github.com/langchain-ai/deepagents](https://github.com/langchain-ai/deepagents) - Open source (MIT) - Python and TypeScript - Sub-agents - Terminal coding agent ## At a glance **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. [github.com (source for What does it do?)](https://github.com/langchain-ai/deepagents) [docs.langchain.com (source for What does it do?)](https://docs.langchain.com/deepagents) **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. [github.com (source for Where does it run?)](https://github.com/langchain-ai/deepagents) **What does it cost?**: Free and open source under MIT. Tracing, evaluation and deployment run through LangSmith, which is a separate product. [github.com (source for What does it cost?)](https://github.com/langchain-ai/deepagents) **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. [github.com (source for Which models does it work with?)](https://github.com/langchain-ai/deepagents) **Who makes it?**: LangChain (GitHub org langchain-ai). Built on LangGraph. [github.com (source for Who makes it?)](https://github.com/langchain-ai/deepagents) ## 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. [See all CLI agents](https://www.agentlist.io/categories/cli-agent) --- Source: [Deep Agents: pricing & alternatives | agentlist.io](https://www.agentlist.io/systems/deep-agents). This is the public page rendered as Markdown; interactive controls require the website.