--- title: "LlamaFactory vs mergoo" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/hiyouga-llamafactory-vs-leeroo-ai-mergoo" tools: ["hiyouga-llamafactory", "leeroo-ai-mergoo"] --- # LlamaFactory vs mergoo *GraphCanon updated Jul 12, 2026* ## Verdict Pick LlamaFactory when license: LlamaFactory is Apache-2.0, mergoo is LGPL-3.0; pick mergoo when license: mergoo is LGPL-3.0, LlamaFactory is Apache-2.0. [LlamaFactory](https://llamafactory.readthedocs.io) reports 73k GitHub stars, 8.9k forks, and 1.1k open issues, last pushed Jul 10, 2026. [mergoo](https://www.leeroo.com/) has 518 stars, 33 forks, and 11 open issues, last pushed Aug 26, 2024. Figures are from public GitHub metadata via [LlamaFactory's repository](https://github.com/hiyouga/LlamaFactory) and [mergoo's repository](https://github.com/Leeroo-AI/mergoo). | | [LlamaFactory](/tools/hiyouga-llamafactory.md) | [mergoo](/tools/leeroo-ai-mergoo.md) | | --- | --- | --- | | Tagline | Unified Efficient Fine-Tuning of 100+ LLMs & VLMs | A library for easily merging multiple LLM experts, and efficiently train the merged LLM. | | Stars | 73,157 | 518 | | Forks | 8,937 | 33 | | Open issues | 1,067 | 11 | | Language | Python | Python | | Adopt for | LlamaFactory is a sophisticated tool for fine-tuning numerous large language models and visual language models efficiently using various methods such as LoRA, QLoRA, RLHF, and quantization. | - | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | LGPL-3.0 | | Categories | LLM Frameworks, Model Training | LLM Frameworks, Model Training | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [LlamaFactory](/tools/hiyouga-llamafactory.md) | [mergoo](/tools/leeroo-ai-mergoo.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Dormant (18%) | | Days since push | 0d | 684d | | Open issues (now) | 1.1k | 11 | | Owner type | User | Organization | | Full report | [trust report](/tools/hiyouga-llamafactory/trust.md) | [trust report](/tools/leeroo-ai-mergoo/trust.md) | ## Decision facts: LlamaFactory - **Adopt for:** LlamaFactory is a sophisticated tool for fine-tuning numerous large language models and visual language models efficiently using various methods such as LoRA, QLoRA, RLHF, and quantization. ## Choose when ### Choose LlamaFactory if… - License: LlamaFactory is Apache-2.0, mergoo is LGPL-3.0. - Tags unique to LlamaFactory: agent, ai, deepseek, gemma. - When you need to fine-tune over 100 different LLMs or VLMs with efficient methods like LoRA or QLoRA. ### Choose mergoo if… - License: mergoo is LGPL-3.0, LlamaFactory is Apache-2.0. - Tags unique to mergoo: artificial-intelligence, generative-ai, llm, lora. - Leaner open-issue backlog (11). ## When NOT to use LlamaFactory - When you are looking to fine-tune less popular or niche models that are not supported within the 100+ models covered by LlamaFactory. - If your project specifically requires custom fine-tuning methods not available in this repository, such as certain versions of PEFT (Parameter Efficient Fine-Tuning) techniques excluding LoRA and QLoa ## 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. ## Common questions ### What is the difference between LlamaFactory and mergoo? LlamaFactory: Unified Efficient Fine-Tuning of 100+ LLMs & VLMs. mergoo: A library for easily merging multiple LLM experts, and efficiently train the merged LLM.. See the comparison table for live GitHub stats and shared categories. ### When should I choose LlamaFactory over mergoo? Choose LlamaFactory over mergoo when License: LlamaFactory is Apache-2.0, mergoo is LGPL-3.0; Tags unique to LlamaFactory: agent, ai, deepseek, gemma; When you need to fine-tune over 100 different LLMs or VLMs with efficient methods like LoRA or QLoRA. ### When should I choose mergoo over LlamaFactory? Choose mergoo over LlamaFactory when License: mergoo is LGPL-3.0, LlamaFactory is Apache-2.0; Tags unique to mergoo: artificial-intelligence, generative-ai, llm, lora; Leaner open-issue backlog (11). ### When should I avoid LlamaFactory? When you are looking to fine-tune less popular or niche models that are not supported within the 100+ models covered by LlamaFactory. If your project specifically requires custom fine-tuning methods not available in this repository, such as certain versions of PEFT (Parameter Efficient Fine-Tuning) techniques excluding LoRA and QLoa ### 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. ### Is LlamaFactory or mergoo more popular on GitHub? LlamaFactory has more GitHub stars (73,157 vs 518). Stars measure visibility, not whether either tool fits your constraints. ### Are LlamaFactory and mergoo open source? Yes - both are open-source projects on GitHub (LlamaFactory: Apache-2.0, mergoo: LGPL-3.0). ### Where can I find alternatives to LlamaFactory or mergoo? GraphCanon lists graph-backed alternatives at [LlamaFactory alternatives](/tools/hiyouga-llamafactory/alternatives) and [mergoo alternatives](/tools/leeroo-ai-mergoo/alternatives) ([LlamaFactory markdown twin](/tools/hiyouga-llamafactory/alternatives.md), [mergoo markdown twin](/tools/leeroo-ai-mergoo/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/hiyouga-llamafactory-vs-leeroo-ai-mergoo.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, LlamaFactory or mergoo? LlamaFactory: Very active. mergoo: Dormant. 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 LlamaFactory and mergoo? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [LlamaFactory trust report](/tools/hiyouga-llamafactory/trust); [mergoo trust report](/tools/leeroo-ai-mergoo/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=hiyouga-llamafactory`](/api/graphcanon/graph?tool=hiyouga-llamafactory) - 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/_