# Langfuse vs mem0
_Agent Infrastructure · independent comparison_

> Langfuse and mem0 are both open-source agent infrastructure you can self-host for free. mem0 has wider GitHub adoption — 66k stars vs 35k. Neither is universally better — pick by fit.

## Side by side

**Langfuse**
- Open source · Infrastructure · 35k★ · TypeScript · MIT · active today
- Best for: Teams that want production-grade, self-hostable tracing and evals for LLM apps.
- [listing](https://agentsearchengine.app/agents/langfuse) · [official](https://langfuse.com)

**mem0**
- Open source · Infrastructure · 66k★ · Python · Apache-2.0 · active today
- Best for: Adding a persistent memory layer to agents across sessions and users.
- Avoid if: You only need simple conversation history in a single session.
- [listing](https://agentsearchengine.app/agents/mem0) · [official](https://mem0.ai)

## Key differences

- mem0 has wider GitHub adoption — 66k stars vs 35k.
- Langfuse is written primarily in TypeScript; mem0 in Python.
- Licensing differs: Langfuse is MIT, mem0 is Apache-2.0.

## Which to choose

**Choose Langfuse if:** Teams that want production-grade, self-hostable tracing and evals for LLM apps.

**Choose mem0 if:** Adding a persistent memory layer to agents across sessions and users.

## FAQ

**What's the main difference between Langfuse and mem0?**
mem0 has wider GitHub adoption — 66k stars vs 35k.

**Is Langfuse or mem0 better?**
Neither is universally better. Langfuse is the stronger fit for Teams that want production-grade, self-hostable tracing and evals for LLM apps; mem0 for Adding a persistent memory layer to agents across sessions and users. Use the side-by-side specs to decide by your own constraints.

**Is Langfuse or mem0 free?**
Langfuse is free to run and self-host; mem0 is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.

**Which is more popular, Langfuse or mem0?**
By GitHub stars — a proxy for open-source adoption — mem0 is ahead (66k vs 35k). Stars measure attention, not necessarily the better fit for you.

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Source: [Agent Search Engine](https://agentsearchengine.app) — https://agentsearchengine.app/compare/langfuse-vs-mem0