# gateway vs mem0
_Agent Infrastructure · independent comparison_

> gateway and mem0 are both open-source agent infrastructure you can self-host for free. mem0 has wider GitHub adoption — 62k stars vs 13k. Neither is universally better — pick by fit.

## Side by side

**gateway**
- Open source · Infrastructure · 13k★ · TypeScript · MIT · active 2 months ago
- Best for: Routing a single fast API across 250+ LLMs from 40+ providers.
- [listing](https://agentsearchengine.app/agents/gateway) · [official](https://portkey.ai/features/ai-gateway)

**mem0**
- Open source · Infrastructure · 62k★ · Python · Apache-2.0 · active 2 days ago
- 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 — 62k stars vs 13k.
- gateway is written primarily in TypeScript; mem0 in Python.
- Licensing differs: gateway is MIT, mem0 is Apache-2.0.

## Which to choose

**Choose gateway if:** Routing a single fast API across 250+ LLMs from 40+ providers.

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

## FAQ

**What's the main difference between gateway and mem0?**
mem0 has wider GitHub adoption — 62k stars vs 13k.

**Is gateway or mem0 better?**
Neither is universally better. gateway is the stronger fit for Routing a single fast API across 250+ LLMs from 40+ providers; 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 gateway or mem0 free?**
gateway 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, gateway or mem0?**
By GitHub stars — a proxy for open-source adoption — mem0 is ahead (62k vs 13k). 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/gateway-vs-mem0