LangChain vs NVIDIA NeMo Agent Toolkit
LangChain and NVIDIA NeMo Agent Toolkit are both agent frameworks. LangChain is published by LangChain and NVIDIA NeMo Agent Toolkit by NVIDIA. On GitHub, LangChain has 148,371 stars and NVIDIA NeMo Agent Toolkit has 2,670. Both were last active in Oct 2026. The table lines up where they differ (publisher, license, GitHub stars and weekly downloads) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. LangChain describes itself as: Python framework of interoperable components and integrations for building agents and LLM apps, with LangGraph and Deep Agents layered above it. NVIDIA NeMo Agent Toolkit: Open-source NVIDIA library that connects existing agents to tools and data, with profiling and LangSmith tracing; deprecated, EOL end of 2026. Licenses: LangChain MIT, NVIDIA NeMo Agent Toolkit Apache-2.0.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
LangChain
LangChain
Python framework of interoperable components and integrations for building agents and LLM apps, with LangGraph and Deep Agents layered above it.
NVIDIA NeMo Agent Toolkit
NVIDIA
Open-source NVIDIA library that connects existing agents to tools and data, with profiling and LangSmith tracing; deprecated, EOL end of 2026.
Who should pick which
- LangChain has the larger community: 148,371 GitHub stars against 2,670.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | LangChain | NVIDIA NeMo Agent Toolkit |
|---|---|---|
| Type | Harness | Harness |
| Publisher | LangChain | NVIDIA |
| License | MIT | Apache-2.0 |
| 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 | 148,371 | 2,670 |
| Weekly downloads | 37,334,710 | 30,063 |
| Last release | Oct 22, 2026 | Sep 10, 2026 |
| Last activity | Oct 24, 2026 | Oct 23, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
LangChain
pip install langchain
NVIDIA NeMo Agent Toolkit
pip install nvidia-nat
Also consider
- 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 - 0.851score
Strands Agents
AWS
Open-source Python and TypeScript SDK for model-driven agents, with tools, MCP, multi-agent patterns and streaming.
HarnessAFreshness: A★ 8.9K↓ 8.9M/wk - 0.841score
GitHub Copilot SDK
GitHub
Multi-language SDKs for embedding the GitHub Copilot agent runtime, with planning, tool calls and file edits, in your apps.
HarnessAFreshness: A★ 10.6K↓ 1.2M/wk
Questions
- Is LangChain or NVIDIA NeMo Agent Toolkit more popular?
- LangChain has more GitHub stars (148,371 against 2,670). Stars measure attention, not quality, so check freshness and docs too.
- Are LangChain and NVIDIA NeMo Agent Toolkit open source?
- Yes: LangChain is MIT and NVIDIA NeMo Agent Toolkit is Apache-2.0.
Related
- AlternativesAlternatives to LangChain
- Best ofBest agent frameworks for Python
- Best ofBest agent frameworks for building AI agents
- ComparisonLangChain vs Strands Agents
- ComparisonGitHub Copilot SDK vs LangChain
- ComparisonGenkit vs LangChain
- ComparisonAutoGen vs NVIDIA NeMo Agent Toolkit
- ComparisonCrewAI vs NVIDIA NeMo Agent Toolkit
Cite this page
LangChain vs NVIDIA NeMo Agent Toolkit. Agent Mart. https://agentmart.dev/compare/langchain-vs-nvidia-nemo-agent-toolkit (last updated 2026-10-26)