--- title: "langchain vs quelmap" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/langchain-ai-langchain-vs-quelmap-inc-quelmap" tools: ["langchain-ai-langchain", "quelmap-inc-quelmap"] --- # langchain vs quelmap *GraphCanon updated Jul 15, 2026* ## Verdict Pick langchain when langchain is primarily Python; quelmap is TypeScript; pick quelmap when quelmap is primarily TypeScript; langchain is Python. [langchain](https://docs.langchain.com/langchain/) reports 142k GitHub stars, 24k forks, and 419 open issues, last pushed Jul 14, 2026. [quelmap](https://quelmap.com) has 201 stars, 20 forks, and 4 open issues, last pushed Oct 20, 2025. Figures are from public GitHub metadata via [langchain's repository](https://github.com/langchain-ai/langchain) and [quelmap's repository](https://github.com/quelmap-inc/quelmap). | | [langchain](/tools/langchain-ai-langchain.md) | [quelmap](/tools/quelmap-inc-quelmap.md) | | --- | --- | --- | | Tagline | The agent engineering platform. | Open Source Local Data Analysis Assistant. | | Stars | 141,713 | 201 | | Forks | 23,545 | 20 | | Open issues | 419 | 4 | | Language | Python | TypeScript | | Adopt for | LangChain is an open-source platform designed specifically for building agents and applications that leverage large language models (LLMs). It provides a standard framework to develop interoperable components and connect | - | | Persona | - | - | | Runtime | - | - | | License | MIT License, allowing free use for both personal and commercial purposes under its stipulated terms. | Apache-2.0 | | Categories | AI Agents, LLM Frameworks | AI Agents, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [langchain](/tools/langchain-ai-langchain.md) | [quelmap](/tools/quelmap-inc-quelmap.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Slowing (36%) | | Days since push | 0d | 267d | | Open issues (now) | 419 | 4 | | Full report | [trust report](/tools/langchain-ai-langchain/trust.md) | [trust report](/tools/quelmap-inc-quelmap/trust.md) | ## Decision facts: langchain - **Pricing:** freemium - LangChain itself is open-source and free to use. However, it might rely on paid services or premium models from external platforms like OpenAI. - **Adopt for:** LangChain is an open-source platform designed specifically for building agents and applications that leverage large language models (LLMs). It provides a standard framework to develop interoperable components and connect - **License detail:** MIT License, allowing free use for both personal and commercial purposes under its stipulated terms. ## Choose when ### Choose langchain if… - langchain is primarily Python; quelmap is TypeScript. - License: langchain is MIT, quelmap is Apache-2.0. - Pricing: LangChain itself is open-source and free to use. However, it might rely on paid services or premium models from external platforms like OpenAI.. - Tags unique to langchain: agents, ai-agents, anthropic, chatgpt. - * When aiming to build complex AI-powered agents or applications requiring high-level capabilities like planning, subagent interaction, and file system operations. ### Choose quelmap if… - quelmap is primarily TypeScript; langchain is Python. - License: quelmap is Apache-2.0, langchain is MIT. - Tags unique to quelmap: data-analysis, data-analysis-agent, data-science, local-ai-agents. ## When NOT to use langchain - * When working on smaller, less complex projects where full-scale integration with sophisticated components is not necessary as LangChain's extensive features might introduce unnecessary complexity. - * If you are primarily focused on JavaScript or TypeScript development as the primary focus of LangChain is Python. Although there is a JS/TS equivalent (LangChain.js), it may not offer the same depth - * For projects requiring heavy customization at lower levels, where a more granular control over individual components is required rather than working with an integrated framework. ## When NOT to use quelmap - Last GitHub push was 268 days ago (slowing maintenance, Oct 20, 2025). Validate activity before betting a new project on quelmap. - AI Agents: Don't use an agent loop when a deterministic workflow would do; agents add latency, cost, and non-determinism. - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. ## Common questions ### What is the difference between langchain and quelmap? langchain: The agent engineering platform.. quelmap: Open Source Local Data Analysis Assistant.. See the comparison table for live GitHub stats and shared categories. ### When should I choose langchain over quelmap? Choose langchain over quelmap when langchain is primarily Python; quelmap is TypeScript; License: langchain is MIT, quelmap is Apache-2.0; Pricing: LangChain itself is open-source and free to use. However, it might rely on paid services or premium models from external platforms like OpenAI.; Tags unique to langchain: agents, ai-agents, anthropic, chatgpt; * When aiming to build complex AI-powered agents or applications requiring high-level capabilities like planning, subagent interaction, and file system operations. ### When should I choose quelmap over langchain? Choose quelmap over langchain when quelmap is primarily TypeScript; langchain is Python; License: quelmap is Apache-2.0, langchain is MIT; Tags unique to quelmap: data-analysis, data-analysis-agent, data-science, local-ai-agents. ### When should I avoid langchain? * When working on smaller, less complex projects where full-scale integration with sophisticated components is not necessary as LangChain's extensive features might introduce unnecessary complexity. * If you are primarily focused on JavaScript or TypeScript development as the primary focus of LangChain is Python. Although there is a JS/TS equivalent (LangChain.js), it may not offer the same depth * For projects requiring heavy customization at lower levels, where a more granular control over individual components is required rather than working with an integrated framework. ### When should I avoid quelmap? Last GitHub push was 268 days ago (slowing maintenance, Oct 20, 2025). Validate activity before betting a new project on quelmap. AI Agents: Don't use an agent loop when a deterministic workflow would do; agents add latency, cost, and non-determinism. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. ### Is langchain or quelmap more popular on GitHub? langchain has more GitHub stars (141,713 vs 201). Stars measure visibility, not whether either tool fits your constraints. ### Are langchain and quelmap open source? Yes - both are open-source projects on GitHub (langchain: MIT, quelmap: Apache-2.0). ### Where can I find alternatives to langchain or quelmap? GraphCanon lists graph-backed alternatives at [langchain alternatives](/tools/langchain-ai-langchain/alternatives) and [quelmap alternatives](/tools/quelmap-inc-quelmap/alternatives) ([langchain markdown twin](/tools/langchain-ai-langchain/alternatives.md), [quelmap markdown twin](/tools/quelmap-inc-quelmap/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/langchain-ai-langchain-vs-quelmap-inc-quelmap.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, langchain or quelmap? langchain: Very active. quelmap: Slowing. 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 langchain and quelmap? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [langchain trust report](/tools/langchain-ai-langchain/trust); [quelmap trust report](/tools/quelmap-inc-quelmap/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=langchain-ai-langchain`](/api/graphcanon/graph?tool=langchain-ai-langchain) - 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/_