--- title: "12-factor-agents vs semantic-kernel" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/humanlayer-12-factor-agents-vs-microsoft-semantic-kernel" tools: ["humanlayer-12-factor-agents", "microsoft-semantic-kernel"] --- # 12-factor-agents vs semantic-kernel *GraphCanon updated Aug 18, 2026* ## Verdict Pick 12-factor-agents if a TypeScript-based framework focused on applying 12-factor principles to build production-ready software with large language models; pick semantic-kernel if semantic Kernel is a toolkit for integrating language model technologies into applications, supporting C#, .NET, Python, and Java. [12-factor-agents](https://github.com/humanlayer/12-factor-agents) reports 25k GitHub stars, 1.9k forks, and 26 open issues, last pushed Sep 21, 2025. [semantic-kernel](https://aka.ms/semantic-kernel) has 28k stars, 4.7k forks, and 256 open issues, last pushed Aug 6, 2026. Figures are from public GitHub metadata via [12-factor-agents's repository](https://github.com/humanlayer/12-factor-agents) and [semantic-kernel's repository](https://github.com/microsoft/semantic-kernel). | | [12-factor-agents](/tools/humanlayer-12-factor-agents.md) | [semantic-kernel](/tools/microsoft-semantic-kernel.md) | | --- | --- | --- | | Tagline | Principles for building production-ready LLM-powered software | Integrate cutting-edge LLM technology quickly and easily into your apps | | Stars | 25,353 | 28,427 | | Forks | 1,918 | 4,707 | | Open issues | 26 | 256 | | Language | TypeScript | C# | | Adopt for | A TypeScript-based framework focused on applying 12-factor principles to build production-ready software with large language models. | Semantic Kernel is a toolkit for integrating language model technologies into applications, supporting C#, .NET, Python, and Java. | | Persona | - | - | | Runtime | - | - | | License | The content and images are licensed under CC BY-SA 4.0, while the code is covered by the Apache 2.0 License. | 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) | [semantic-kernel](/tools/microsoft-semantic-kernel.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Very active (96%) | | Days since push | 330d | 1d | | Open issues (now) | 26 | 256 | | Stars delta | +966 (30d) | +142 (30d) | | Open issues delta | 0 (30d) | -2 (30d) | | Full report | [trust report](/tools/humanlayer-12-factor-agents/trust.md) | [trust report](/tools/microsoft-semantic-kernel/trust.md) | ## Decision facts: 12-factor-agents - **Pricing:** freemium - Free to use with open-source licenses - **Requirements:** Min 4 GB RAM; Requires Docker; Requires a solid understanding of TypeScript and familiarity with concepts like prompt engineering and context window management. - **Adopt for:** A TypeScript-based framework focused on applying 12-factor principles to build production-ready software with large language models. - **License detail:** The content and images are licensed under CC BY-SA 4.0, while the code is covered by the Apache 2.0 License. ## Decision facts: semantic-kernel - **Adopt for:** Semantic Kernel is a toolkit for integrating language model technologies into applications, supporting C#, .NET, Python, and Java. ## Choose when ### Choose 12-factor-agents if… - 12-factor-agents is primarily TypeScript; semantic-kernel is C#. - License: 12-factor-agents is Other, semantic-kernel is MIT. - Pricing: Free to use with open-source licenses. - Requirements: Min 4 GB RAM; Requires Docker; Requires a solid understanding of TypeScript and familiarity with concepts like prompt engineering and context window management.. - Tags unique to 12-factor-agents: 12-factor, agents, context-window, framework. - You are specifically developing AI agents or LLM-powered applications in TypeScript and need a structured guideline grounded in the 12-factor app principles. ### Choose semantic-kernel if… - semantic-kernel is primarily C#; 12-factor-agents is TypeScript. - License: semantic-kernel is MIT, 12-factor-agents is Other. - Tags unique to semantic-kernel: artificial-intelligence, llm, openai, sdk. - - When you are looking to integrate cutting-edge language models (LLMs) directly from major providers like Azure OpenAI or OpenAI into your application. ## When NOT to use 12-factor-agents - If your project requires languages other than TypeScript or if your application already has a strong foundation not necessarily aligning with the 12-factor app principles. - When you’re looking for comprehensive deployment automation tools rather than guidance on building LLM-powered agents and ensuring their reliability in production environments. ## When NOT to use semantic-kernel - - If you require support exclusively in programming languages not currently offered by Semantic Kernel (for example, Ruby, Go). - - When your project strictly avoids frameworks associated with Microsoft technologies and prefers more independent or community-driven alternatives. ## Common questions ### What is the difference between 12-factor-agents and semantic-kernel? 12-factor-agents: Principles for building production-ready LLM-powered software. semantic-kernel: Integrate cutting-edge LLM technology quickly and easily into your apps. See the comparison table for live GitHub stats and shared categories. ### When should I choose 12-factor-agents over semantic-kernel? Choose 12-factor-agents over semantic-kernel when 12-factor-agents is primarily TypeScript; semantic-kernel is C#; License: 12-factor-agents is Other, semantic-kernel is MIT; Pricing: Free to use with open-source licenses; Requirements: Min 4 GB RAM; Requires Docker; Requires a solid understanding of TypeScript and familiarity with concepts like prompt engineering and context window management.; Tags unique to 12-factor-agents: 12-factor, agents, context-window, framework; You are specifically developing AI agents or LLM-powered applications in TypeScript and need a structured guideline grounded in the 12-factor app principles. ### When should I choose semantic-kernel over 12-factor-agents? Choose semantic-kernel over 12-factor-agents when semantic-kernel is primarily C#; 12-factor-agents is TypeScript; License: semantic-kernel is MIT, 12-factor-agents is Other; Tags unique to semantic-kernel: artificial-intelligence, llm, openai, sdk; - When you are looking to integrate cutting-edge language models (LLMs) directly from major providers like Azure OpenAI or OpenAI into your application. ### When should I avoid 12-factor-agents? If your project requires languages other than TypeScript or if your application already has a strong foundation not necessarily aligning with the 12-factor app principles. When you’re looking for comprehensive deployment automation tools rather than guidance on building LLM-powered agents and ensuring their reliability in production environments. ### When should I avoid semantic-kernel? - If you require support exclusively in programming languages not currently offered by Semantic Kernel (for example, Ruby, Go). - When your project strictly avoids frameworks associated with Microsoft technologies and prefers more independent or community-driven alternatives. ### Is 12-factor-agents or semantic-kernel more popular on GitHub? semantic-kernel has more GitHub stars (28,427 vs 25,353). Stars measure visibility, not whether either tool fits your constraints. ### Are 12-factor-agents and semantic-kernel open source? Yes - both are open-source projects on GitHub (12-factor-agents: Other, semantic-kernel: MIT). ### Where can I find alternatives to 12-factor-agents or semantic-kernel? GraphCanon lists graph-backed alternatives at [12-factor-agents alternatives](/tools/humanlayer-12-factor-agents/alternatives) and [semantic-kernel alternatives](/tools/microsoft-semantic-kernel/alternatives) ([12-factor-agents markdown twin](/tools/humanlayer-12-factor-agents/alternatives.md), [semantic-kernel markdown twin](/tools/microsoft-semantic-kernel/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 [this comparison](/compare/humanlayer-12-factor-agents-vs-microsoft-semantic-kernel.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 semantic-kernel? 12-factor-agents: Slowing. semantic-kernel: 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 semantic-kernel? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [12-factor-agents trust report](/tools/humanlayer-12-factor-agents/trust); [semantic-kernel trust report](/tools/microsoft-semantic-kernel/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/_