--- title: "mergoo vs LLMs-from-scratch" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/leeroo-ai-mergoo-vs-rasbt-llms-from-scratch" tools: ["leeroo-ai-mergoo", "rasbt-llms-from-scratch"] --- # mergoo vs LLMs-from-scratch *GraphCanon updated Jul 12, 2026* ## Verdict Pick mergoo when mergoo is primarily Python; LLMs-from-scratch is Jupyter Notebook; pick LLMs-from-scratch when lLMs-from-scratch is primarily Jupyter Notebook; mergoo is Python. [mergoo](https://www.leeroo.com/) reports 518 GitHub stars, 33 forks, and 11 open issues, last pushed Aug 26, 2024. [LLMs-from-scratch](https://amzn.to/4fqvn0D) has 99k stars, 15k forks, and 4 open issues, last pushed Jun 2, 2026. Figures are from public GitHub metadata via [mergoo's repository](https://github.com/Leeroo-AI/mergoo) and [LLMs-from-scratch's repository](https://github.com/rasbt/LLMs-from-scratch). | | [mergoo](/tools/leeroo-ai-mergoo.md) | [LLMs-from-scratch](/tools/rasbt-llms-from-scratch.md) | | --- | --- | --- | | Tagline | A library for easily merging multiple LLM experts, and efficiently train the merged LLM. | Implement a ChatGPT-like LLM in PyTorch from scratch, step by step | | Stars | 518 | 98,899 | | Forks | 33 | 15,183 | | Open issues | 11 | 4 | | Language | Python | Jupyter Notebook | | Adopt for | - | LLMs-from-scratch is a project-oriented repository aimed at building PyTorch-based language models from the ground up, with detailed step-by-step instructions. | | Persona | - | - | | Runtime | - | - | | License | LGPL-3.0 | Other | | Categories | LLM Frameworks, Model Training | LLM Frameworks, Model Training | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [mergoo](/tools/leeroo-ai-mergoo.md) | [LLMs-from-scratch](/tools/rasbt-llms-from-scratch.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Steady (60%) | | Days since push | 684d | 38d | | Open issues (now) | 11 | 4 | | Owner type | Organization | User | | Full report | [trust report](/tools/leeroo-ai-mergoo/trust.md) | [trust report](/tools/rasbt-llms-from-scratch/trust.md) | ## Decision facts: LLMs-from-scratch - **Adopt for:** LLMs-from-scratch is a project-oriented repository aimed at building PyTorch-based language models from the ground up, with detailed step-by-step instructions. ## Choose when ### Choose mergoo if… - mergoo is primarily Python; LLMs-from-scratch is Jupyter Notebook. - License: mergoo is LGPL-3.0, LLMs-from-scratch is Other. - Tags unique to mergoo: fine-tuning, large-language-models, llm, lora. ### Choose LLMs-from-scratch if… - LLMs-from-scratch is primarily Jupyter Notebook; mergoo is Python. - License: LLMs-from-scratch is Other, mergoo is LGPL-3.0. - Tags unique to LLMs-from-scratch: ai, attention mechanism, deep-learning, finetuning. - - You are an advanced practitioner aiming to fully understand the underpinnings of LLMs using PyTorch as your primary framework. ## When NOT to use mergoo - Last GitHub push was 685 days ago (dormant maintenance, Aug 26, 2024). Validate activity before betting a new project on mergoo. - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. - Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ## When NOT to use LLMs-from-scratch - - If you are looking for a rapid deployment of an LLM without understanding its intricate structure - this tool requires extensive manual and conceptual work. - - You prefer frameworks with automatic model generation or other high-level abstractions that simplify the process. This repository emphasizes manual creation, which is more time-consuming but offers丰 - a deeper learning experience. ## Common questions ### What is the difference between mergoo and LLMs-from-scratch? mergoo: A library for easily merging multiple LLM experts, and efficiently train the merged LLM.. LLMs-from-scratch: Implement a ChatGPT-like LLM in PyTorch from scratch, step by step. See the comparison table for live GitHub stats and shared categories. ### When should I choose mergoo over LLMs-from-scratch? Choose mergoo over LLMs-from-scratch when mergoo is primarily Python; LLMs-from-scratch is Jupyter Notebook; License: mergoo is LGPL-3.0, LLMs-from-scratch is Other; Tags unique to mergoo: fine-tuning, large-language-models, llm, lora. ### When should I choose LLMs-from-scratch over mergoo? Choose LLMs-from-scratch over mergoo when LLMs-from-scratch is primarily Jupyter Notebook; mergoo is Python; License: LLMs-from-scratch is Other, mergoo is LGPL-3.0; Tags unique to LLMs-from-scratch: ai, attention mechanism, deep-learning, finetuning; - You are an advanced practitioner aiming to fully understand the underpinnings of LLMs using PyTorch as your primary framework. ### When should I avoid mergoo? Last GitHub push was 685 days ago (dormant maintenance, Aug 26, 2024). Validate activity before betting a new project on mergoo. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ### When should I avoid LLMs-from-scratch? - If you are looking for a rapid deployment of an LLM without understanding its intricate structure - this tool requires extensive manual and conceptual work. - You prefer frameworks with automatic model generation or other high-level abstractions that simplify the process. This repository emphasizes manual creation, which is more time-consuming but offers丰 a deeper learning experience. ### Is mergoo or LLMs-from-scratch more popular on GitHub? LLMs-from-scratch has more GitHub stars (98,899 vs 518). Stars measure visibility, not whether either tool fits your constraints. ### Are mergoo and LLMs-from-scratch open source? Yes - both are open-source projects on GitHub (mergoo: LGPL-3.0, LLMs-from-scratch: Other). ### Where can I find alternatives to mergoo or LLMs-from-scratch? GraphCanon lists graph-backed alternatives at [mergoo alternatives](/tools/leeroo-ai-mergoo/alternatives) and [LLMs-from-scratch alternatives](/tools/rasbt-llms-from-scratch/alternatives) ([mergoo markdown twin](/tools/leeroo-ai-mergoo/alternatives.md), [LLMs-from-scratch markdown twin](/tools/rasbt-llms-from-scratch/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/leeroo-ai-mergoo-vs-rasbt-llms-from-scratch.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, mergoo or LLMs-from-scratch? mergoo: Dormant. LLMs-from-scratch: 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 mergoo and LLMs-from-scratch? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [mergoo trust report](/tools/leeroo-ai-mergoo/trust); [LLMs-from-scratch trust report](/tools/rasbt-llms-from-scratch/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=leeroo-ai-mergoo`](/api/graphcanon/graph?tool=leeroo-ai-mergoo) - 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/_