# LightRAG vs MemOS

LightRAG is free, with no paid plan attached. MemOS is free, with no paid plan attached.

| | LightRAG | MemOS |
|---|---|---|
| Pricing | Free | Free |
| Free to start | Yes | Yes |
| Category | AI Agents & Automation | AI Agents & Automation |
| Type | Agent Memory & RAG-as-a-Service | Agent Memory & RAG-as-a-Service |
| Best for | Simple, fast graph-based RAG from HKU Data Science lab (EMNLP 2025) | Memory operating system for LLM agents with hybrid retrieval and persistent memory |

## FAQ

### LightRAG vs MemOS: what is the difference?

LightRAG is free, with no paid plan attached and is listed for simple, fast graph-based RAG from HKU Data Science lab (EMNLP 2025). MemOS is free, with no paid plan attached and is listed for memory operating system for LLM agents with hybrid retrieval and persistent memory. Both sit in Agent Memory & RAG-as-a-Service.

### Is LightRAG or MemOS cheaper to start with?

Neither — LightRAG and MemOS are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

### Which should I choose, LightRAG or MemOS?

Choose LightRAG if you need simple, fast graph-based RAG from HKU Data Science lab (EMNLP 2025); choose MemOS if you need memory operating system for LLM agents with hybrid retrieval and persistent memory. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

## Related

- [LightRAG](https://aitools.flocci.in/tool/lightrag)
- [MemOS](https://aitools.flocci.in/tool/memos)
- [LightRAG alternatives](https://aitools.flocci.in/alternatives/lightrag)
- [MemOS alternatives](https://aitools.flocci.in/alternatives/memos)
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Source: Flocci AI Tools — https://aitools.flocci.in/compare/lightrag-vs-memos

Facts last verified: October 2026