--- title: "Lumos vs embedJs" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/andrewnguonly-lumos-vs-llm-tools-embedjs" tools: ["andrewnguonly-lumos", "llm-tools-embedjs"] --- # Lumos vs embedJs *GraphCanon updated Aug 22, 2026* ## Verdict Pick Lumos if lumos is a RAG LLM co-pilot that operates within Chrome and leverages local language models to support web browsing with automation; pick embedJs if embedJs is a NodeJS RAG framework in TypeScript for integrating large language models and embeddings. [Lumos](https://github.com/andrewnguonly/Lumos) reports 1.5k GitHub stars, 112 forks, and 24 open issues, last pushed Jan 26, 2025. [embedJs](https://llm-tools.mintlify.app/get-started/introduction) has 601 stars, 74 forks, and 18 open issues, last pushed Jun 26, 2026. Figures are from public GitHub metadata via [Lumos's repository](https://github.com/andrewnguonly/Lumos) and [embedJs's repository](https://github.com/llm-tools/embedJs). | | [Lumos](/tools/andrewnguonly-lumos.md) | [embedJs](/tools/llm-tools-embedjs.md) | | --- | --- | --- | | Tagline | A RAG LLM co-pilot for browsing the web | A NodeJS RAG framework for working with LLMs and embeddings | | Stars | 1,516 | 601 | | Forks | 112 | 74 | | Open issues | 24 | 18 | | Language | TypeScript | TypeScript | | Adopt for | Lumos is a RAG LLM co-pilot that operates within Chrome and leverages local language models to support web browsing with automation. | EmbedJs is a NodeJS RAG framework in TypeScript for integrating large language models and embeddings. | | Persona | - | - | | Runtime | - | - | | License | MIT | Apache-2.0 | | Categories | Data & Retrieval, LLM Frameworks | Data & Retrieval, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [Lumos](/tools/andrewnguonly-lumos.md) | [embedJs](/tools/llm-tools-embedjs.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Steady (60%) | | Days since push | 564d | 56d | | Open issues (now) | 24 | 18 | | Stars delta | +1 (30d) | -3 (30d) | | Owner type | User | Organization | | Full report | [trust report](/tools/andrewnguonly-lumos/trust.md) | [trust report](/tools/llm-tools-embedjs/trust.md) | ## Decision facts: Lumos - **Requirements:** Ensure that your environment supports Docker to run the Ollama server as required for Lumos operation.; Your development workflow should be prepared to integrate a Chrome extension, considering you need to load unpacked extensions into Chrome. - **Adopt for:** Lumos is a RAG LLM co-pilot that operates within Chrome and leverages local language models to support web browsing with automation. - **License detail:** MIT ## Decision facts: embedJs - **Adopt for:** EmbedJs is a NodeJS RAG framework in TypeScript for integrating large language models and embeddings. ## Choose when ### Choose Lumos if… - License: Lumos is MIT, embedJs is Apache-2.0. - Requirements: Ensure that your environment supports Docker to run the Ollama server as required for Lumos operation.; Your development workflow should be prepared to integrate a Chrome extension, considering you need to load unpacked extensions into Chrome.. - Tags unique to Lumos: chrome-extension, langchain, langchain-js, llm. - Use Lumos when your task involves heavy web navigation and requires interaction with the latest local machine learning models directly from a browser. ### Choose embedJs if… - License: embedJs is Apache-2.0, Lumos is MIT. - Tags unique to embedJs: ai, chatgpt, claude, cohere. - Use EmbedJs when you need a TypeScript-based framework to work with various LLMs such as GPT, Claude, or HuggingFace within a NodeJS environment. ## When NOT to use Lumos - Avoid using Lumos when your primary task does not involve browsing the web or requires a standalone application interface that does not need browser augmentation. - Do not use this tool if you are looking for support in languages other than TypeScript, as it is specifically built around this language. ## When NOT to use embedJs - Avoid using EmbedJs if you prefer frameworks in languages other than TypeScript or work primarily outside the NodeJS ecosystem. - Do not use EmbedJs if comprehensive support for only specific LLMs such as Mistral or Ollama is required, as its scope spans multiple popular models, potentially complicating specialized setups. ## Common questions ### What is the difference between Lumos and embedJs? Lumos: A RAG LLM co-pilot for browsing the web. embedJs: A NodeJS RAG framework for working with LLMs and embeddings. See the comparison table for live GitHub stats and shared categories. ### When should I choose Lumos over embedJs? Choose Lumos over embedJs when License: Lumos is MIT, embedJs is Apache-2.0; Requirements: Ensure that your environment supports Docker to run the Ollama server as required for Lumos operation.; Your development workflow should be prepared to integrate a Chrome extension, considering you need to load unpacked extensions into Chrome.; Tags unique to Lumos: chrome-extension, langchain, langchain-js, llm; Use Lumos when your task involves heavy web navigation and requires interaction with the latest local machine learning models directly from a browser. ### When should I choose embedJs over Lumos? Choose embedJs over Lumos when License: embedJs is Apache-2.0, Lumos is MIT; Tags unique to embedJs: ai, chatgpt, claude, cohere; Use EmbedJs when you need a TypeScript-based framework to work with various LLMs such as GPT, Claude, or HuggingFace within a NodeJS environment. ### When should I avoid Lumos? Avoid using Lumos when your primary task does not involve browsing the web or requires a standalone application interface that does not need browser augmentation. Do not use this tool if you are looking for support in languages other than TypeScript, as it is specifically built around this language. ### When should I avoid embedJs? Avoid using EmbedJs if you prefer frameworks in languages other than TypeScript or work primarily outside the NodeJS ecosystem. Do not use EmbedJs if comprehensive support for only specific LLMs such as Mistral or Ollama is required, as its scope spans multiple popular models, potentially complicating specialized setups. ### Is Lumos or embedJs more popular on GitHub? Lumos has more GitHub stars (1,516 vs 601). Stars measure visibility, not whether either tool fits your constraints. ### Are Lumos and embedJs open source? Yes - both are open-source projects on GitHub (Lumos: MIT, embedJs: Apache-2.0). ### Where can I find alternatives to Lumos or embedJs? GraphCanon lists graph-backed alternatives at [Lumos alternatives](/tools/andrewnguonly-lumos/alternatives) and [embedJs alternatives](/tools/llm-tools-embedjs/alternatives) ([Lumos markdown twin](/tools/andrewnguonly-lumos/alternatives.md), [embedJs markdown twin](/tools/llm-tools-embedjs/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/andrewnguonly-lumos-vs-llm-tools-embedjs.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, Lumos or embedJs? Lumos: Dormant. embedJs: Steady. 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 Lumos and embedJs? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [Lumos trust report](/tools/andrewnguonly-lumos/trust); [embedJs trust report](/tools/llm-tools-embedjs/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=andrewnguonly-lumos`](/api/graphcanon/graph?tool=andrewnguonly-lumos) - 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/_