LiteLLMFreemium
An open-source LLM gateway that gives you one consistent API and proxy across 100+ model providers, with key management and spend tracking.
AI Infrastructure comparison
LiteLLM vs OpenRouter
Pricing, pros, cons, and ideal use cases — side by side.
OpenRouterPaid
A unified API and marketplace that routes requests to hundreds of models from many providers through a single endpoint and bill.
At a glance
| LiteLLM | OpenRouter | |
|---|---|---|
| Pricing | FreemiumOpen-source and free to self-host. A paid enterprise edition adds SSO, audit logs, and support. | PaidUsage-based — you pay per token, billed through OpenRouter on top of provider costs. |
| Category | AI Infrastructure | AI Infrastructure |
| Ideal for | Teams using multiple model providersPlatform teams centralizing LLM access and spendEnterprises wanting provider portability | Teams experimenting across many modelsApps that need breadth of model choiceDevelopers who want one API and one bill |
Pros & cons
LiteLLM
Pros
- One consistent API across 100+ providers
- Proxy adds key management, budgets, and spend logging
- Avoids provider lock-in
- Lightweight to adopt
Cons
- Self-hosting the proxy is your operational burden
- A gateway is one more hop to monitor
- Advanced governance features are in the paid edition
OpenRouter
Pros
- One API for hundreds of models
- Easy price and latency comparison
- Automatic provider failover
- Fast way to try new models
Cons
- Adds a margin and a middleman to each call
- Less ideal than going direct for steady high volume
- No direct commercial relationship with model providers
Which should you choose?
LiteLLM is the lighter-weight option (Freemium), while OpenRouter sits higher on the pricing ladder (Paid). LiteLLM is built around teams using multiple model providers; OpenRouter leans more toward teams experimenting across many models. Shortlist the one whose strengths line up with your biggest constraint.