Home/Compare/12-factor-agents vs langchain

Comparison

12-factor-agents vs langchain

12-factor-agents (Principles for building reliable LLM applications) vs langchain (The agent engineering platform.) - live GitHub stats and typed graph relationships, not marketing.

Markdown twin · 12-factor-agents alternatives · langchain alternatives

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12-factor-agents

humanlayer/12-factor-agents

24kpushed Sep 21, 2025
vs

langchain

langchain-ai/langchain

141kpushed Jul 7, 2026

Tagline

12-factor-agents
Principles for building reliable LLM applications
langchain
The agent engineering platform.

Stars

12-factor-agents
24k
langchain
141k

Forks

12-factor-agents
1.8k
langchain
23k

Open issues

12-factor-agents
26
langchain
406

Language

12-factor-agents
TypeScript
langchain
Python

Adopt for

12-factor-agents
Decision-Critical Facts for 12-factor-agents
langchain
LangChain is an open-source Python framework focused on building agents and LLM-powered applications with built-in support for interoperable components and third-party integrations. It offers a suite of tools including '

Persona

12-factor-agents
-
langchain
-

Runtime

12-factor-agents
-
langchain
-

License

12-factor-agents
Other
langchain
MIT

Last pushed

12-factor-agents
Sep 21, 2025
langchain
Jul 7, 2026

Categories

12-factor-agents
AI Agents, LLM Frameworks
langchain
LLM Frameworks, AI Agents

Trust and health

Maintenance

12-factor-agents
Slowing (36%)
langchain
Very active (96%)

Days since push

12-factor-agents
289d
langchain
0d

Open issues (now)

12-factor-agents
26
langchain
406

Full report

12-factor-agents
Trust report
langchain
Trust report

Typed relationship

12-factor-agents related langchain

Choose 12-factor-agents if…

  • 12-factor-agents is primarily TypeScript; langchain is Python.
  • License: 12-factor-agents is Other, langchain is MIT.
  • Graph edge: 12-factor-agents is a typed related of langchain - see the relationship row above.
  • Tags unique to 12-factor-agents: memory, llms, 12-factor, orchestration.
  • - You are looking to build LLM-powered software that adheres to methodologies ensuring reliable and robust application in a production environment.

When NOT to use 12-factor-agents

  • - If your project involves basic plug-and-play solutions without the need for a robust framework supporting production-grade AI agents.
  • - You prefer frameworks that require minimal configuration and adaptation, as 12-factor-agents might demand more effort to integrate into existing systems or workflows.
  • - The scope of your application is limited to deterministic code with only simple LLM-driven interactions, not requiring extensive context management or complex agent behaviors.

Choose langchain if…

  • langchain is primarily Python; 12-factor-agents is TypeScript.
  • License: langchain is MIT, 12-factor-agents is Other.
  • Pricing: LangChain is available free of cost due to its open-source nature. However, certain advanced features or services provided through LangSmith may have associated costs that are not detailed in this un-.
  • Graph edge: langchain is a typed related of 12-factor-agents - see the relationship row above.
  • Tags unique to langchain: multiagent, langchain, ai-agents.
  • You are developing complex AI applications that require advanced customization or agent orchestration with LangGraph.

When NOT to use langchain

  • If you are seeking simpler or standalone tools without the complexity of chaining interoperable components.
  • When your project requires language support other than Python, as LangChain’s core is built around Python with limited JS/TS options.
  • Your development environment does not allow for open-source tooling under MIT license.

Explore

Related comparisons

Common questions

What is the difference between 12-factor-agents and langchain?
12-factor-agents: Principles for building reliable LLM applications. langchain: The agent engineering platform.. See the comparison table for live GitHub stats and shared categories.
When should I choose 12-factor-agents over langchain?
Choose 12-factor-agents over langchain when 12-factor-agents is primarily TypeScript; langchain is Python; License: 12-factor-agents is Other, langchain is MIT; Graph edge: 12-factor-agents is a typed related of langchain - see the relationship row above; Tags unique to 12-factor-agents: memory, llms, 12-factor, orchestration; - You are looking to build LLM-powered software that adheres to methodologies ensuring reliable and robust application in a production environment.
When should I choose langchain over 12-factor-agents?
Choose langchain over 12-factor-agents when langchain is primarily Python; 12-factor-agents is TypeScript; License: langchain is MIT, 12-factor-agents is Other; Pricing: LangChain is available free of cost due to its open-source nature. However, certain advanced features or services provided through LangSmith may have associated costs that are not detailed in this un-; Graph edge: langchain is a typed related of 12-factor-agents - see the relationship row above; Tags unique to langchain: multiagent, langchain, ai-agents; You are developing complex AI applications that require advanced customization or agent orchestration with LangGraph.
When should I avoid 12-factor-agents?
- If your project involves basic plug-and-play solutions without the need for a robust framework supporting production-grade AI agents. - You prefer frameworks that require minimal configuration and adaptation, as 12-factor-agents might demand more effort to integrate into existing systems or workflows. - The scope of your application is limited to deterministic code with only simple LLM-driven interactions, not requiring extensive context management or complex agent behaviors.
When should I avoid langchain?
If you are seeking simpler or standalone tools without the complexity of chaining interoperable components. When your project requires language support other than Python, as LangChain’s core is built around Python with limited JS/TS options. Your development environment does not allow for open-source tooling under MIT license.
Is 12-factor-agents or langchain more popular on GitHub?
langchain has more GitHub stars (141,278 vs 23,999). Stars measure visibility, not whether either tool fits your constraints.
Are 12-factor-agents and langchain open source?
Yes - both are open-source projects on GitHub (12-factor-agents: Other, langchain: MIT).
Where can I find alternatives to 12-factor-agents or langchain?
GraphCanon lists graph-backed alternatives at /tools/humanlayer-12-factor-agents/alternatives and /tools/langchain-ai-langchain/alternatives (/tools/humanlayer-12-factor-agents/alternatives.md, /tools/langchain-ai-langchain/alternatives.md), ranked by typed relationship edges rather than popularity votes.
Is there a machine-readable version of this comparison?
Yes. The markdown twin at /compare/humanlayer-12-factor-agents-vs-langchain-ai-langchain.md mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
Which is better maintained, 12-factor-agents or langchain?
12-factor-agents: Slowing. langchain: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
Where are the full trust reports for 12-factor-agents and langchain?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: 12-factor-agents: /tools/humanlayer-12-factor-agents/trust; langchain: /tools/langchain-ai-langchain/trust.

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