# OpenRouter vs LiteLLM: which LLM gateway wins in 2026?

**Source:** https://promtable.com/compare/openrouter-vs-litellm

> OpenRouter wins on managed hosting, easy multi-model switch, and per-token billing across 200+ models. LiteLLM wins on self-host, OpenAI-format proxy with no vendor lock-in, and granular cost / rate controls. Pick OpenRouter for managed convenience, LiteLLM for self-host + control.

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OpenRouter wins on managed hosting, easy multi-model switch, and per-token billing across 200+ models. LiteLLM wins on self-host, OpenAI-format proxy with no vendor lock-in, and granular cost / rate controls. Pick OpenRouter for managed convenience, LiteLLM for self-host + control.

## At a glance

| Dimension | OpenRouter | LiteLLM |
|---|---|---|
| Architecture | Hosted gateway (managed) | Self-host SDK + proxy (Python) |
| Model coverage | **200+ models from 50+ providers** ✓ | 100+ models via SDK + OpenAI-format proxy |
| OpenAI-compatible API | Yes | Yes |
| Self-host | No (managed only) | **Yes — Docker / k8s / local** ✓ |
| BYOK (bring your own key) | Optional — use OR or your own key | Yes — your keys, your proxy |
| Cost / rate controls | Per-key spending limits + analytics | Per-key budget + cost tracking + rate limits |
| Fallback / routing | Auto-fallback across providers | Custom fallback rules |
| Pricing | Pass-through + small margin | **Free OSS + paid SaaS tier** ✓ |
| Observability | Built-in dashboard + analytics | **Pluggable (Langfuse, Helicone, Datadog)** ✓ |
| Best for | Quick multi-model access, managed gateway | Self-host, full control, custom routing |

## Verdict

OpenRouter is the right pick for quick managed access to 200+ models with one API key + one billing — perfect for prototyping, indie devs, or teams who want zero-ops LLM access. LiteLLM is the right pick for production teams that need self-host, granular cost controls, custom routing, or full ownership of their LLM proxy layer. Many production stacks use both: LiteLLM in front of OpenAI / Anthropic / Bedrock direct, OpenRouter as a fallback for long-tail models.

## When to pick which

- **OpenRouter** — Quick managed multi-model access, indie / prototyping, one bill.
- **LiteLLM** — Self-host, full control, custom routing, granular cost / rate limits.

## FAQ

### Self-hostable?

LiteLLM — full self-host; OpenRouter is managed only.

### Cheapest?

LiteLLM OSS is free if you self-host; OpenRouter charges a small margin on pass-through.

### Most models?

OpenRouter — 200+ models from 50+ providers in one API.

## Related

- [/compare/openrouter-vs-portkey](https://promtable.com/compare/openrouter-vs-portkey)
- [/alternatives/openrouter](https://promtable.com/alternatives/openrouter)
- [/glossary/llm-gateway](https://promtable.com/glossary/llm-gateway)

*Last updated: 2026-06-01*
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Original page: https://promtable.com/compare/openrouter-vs-litellm
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