--- title: "12-factor-agents vs langchain" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/humanlayer-12-factor-agents-vs-langchain-ai-langchain" tools: ["humanlayer-12-factor-agents", "langchain-ai-langchain"] --- # 12-factor-agents vs langchain Neutral, constraint-first comparison with live GitHub stats. | | [12-factor-agents](/tools/humanlayer-12-factor-agents.md) | [langchain](/tools/langchain-ai-langchain.md) | | --- | --- | --- | | Tagline | Principles for building reliable LLM applications | The agent engineering platform. | | Stars | 23,999 | 141,278 | | Forks | 1,834 | 23,481 | | Open issues | 26 | 406 | | Language | TypeScript | Python | | Adopt for | Decision-Critical Facts for 12-factor-agents | 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 | - | - | | Runtime | - | - | | License | Other | MIT | | Categories | AI Agents, LLM Frameworks | AI Agents, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [12-factor-agents](/tools/humanlayer-12-factor-agents.md) | [langchain](/tools/langchain-ai-langchain.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Very active (96%) | | Days since push | 289d | 0d | | Open issues (now) | 26 | 406 | | Full report | [trust report](/tools/humanlayer-12-factor-agents/trust.md) | [trust report](/tools/langchain-ai-langchain/trust.md) | **Typed relationship:** 12-factor-agents _(related)_ langchain ## Decision facts: 12-factor-agents - **Adopt for:** Decision-Critical Facts for 12-factor-agents ## Decision facts: langchain - **Pricing:** freemium - 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- - **Adopt for:** 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 ' ## Choose when ### 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. ### 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 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 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. ## 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. --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=humanlayer-12-factor-agents`](/api/graphcanon/graph?tool=humanlayer-12-factor-agents) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_