Deep Agents vs LangGraph.js
Both come from LangChain under MIT, and both are graded A for freshness. Deep Agents has 30,550 GitHub stars to 3,370 for LangGraph.js, but LangGraph.js has more weekly downloads, 2,326,897 to 1,930,228.
Pick Deep Agents for Python, built-in MCP support, or several agents working together. It is an opinionated harness on LangGraph with sub-agents, filesystem access and persistent memory. LangGraph.js is an agent harness for building agents with code, with LangSmith for testing and monitoring.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Deep Agents
LangChain
Opinionated agent harness on LangGraph with sub-agents, filesystem access, context management, persistent memory and approval of tool calls.
LangGraph.js
LangChain
Open-source agent harness from LangChain for building agents with code, with LangSmith for testing and monitoring.
Who should pick which
- Pick Deep Agents if you work in Python.
- Pick Deep Agents if you want MCP support built in.
- Pick Deep Agents if you need several agents working together.
- Deep Agents has the larger community: 30,550 GitHub stars against 3,370.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | Deep Agents | LangGraph.js |
|---|---|---|
| Type | Harness | Harness |
| Publisher | LangChain | LangChain |
| License | MIT | MIT |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 30,550 | 3,370 |
| Weekly downloads | 1,930,228 | 2,326,897 |
| Last release | Oct 23, 2026 | Oct 22, 2026 |
| Last activity | Oct 24, 2026 | Oct 22, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
Deep Agents
pip install deepagents
LangGraph.js
npm install @langchain/langgraph
Also consider
- 0.867score
Pi Agent Core
Earendil
Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves.
HarnessAFreshness: A★ 117.6K↓ 5.1M/wk - 0.853score
LlamaIndex
LlamaIndex
Open-source Python toolkit for RAG and agents over your own data, with event-driven workflows and 300+ integration packages.
HarnessAFreshness: A★ 52.6K↓ 1.4M/wk - 0.831score
CopilotKit
CopilotKit
Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol.
HarnessAFreshness: A★ 38.2K↓ 286.2K/wk
Questions
- Is Deep Agents or LangGraph.js more popular?
- Deep Agents has more GitHub stars (30,550 against 3,370). Stars measure attention, not quality, so check freshness and docs too.
- Are Deep Agents and LangGraph.js open source?
- Yes: Deep Agents is MIT and LangGraph.js is MIT.
Related
- AlternativesAlternatives to Deep Agents
- AlternativesAlternatives to LangGraph.js
- Best ofBest agent frameworks for building AI agents
- ComparisonDeep Agents vs Pi Agent Core
- ComparisonCopilotKit vs Deep Agents
- ComparisonDeep Agents vs Letta
- ComparisonLangGraph.js vs Pi Agent Core
- ComparisonCopilotKit vs LangGraph.js
Cite this page
Deep Agents vs LangGraph.js. Agent Mart. https://agentmart.dev/compare/deep-agents-vs-langgraph-js (last updated 2026-10-26)