# Gateway Providers

Gateway providers aggregate multiple model providers and add features like caching, rate limiting, analytics, and automatic failover. Use gateways when you need observability, cost management, or simplified multi-provider access.

## Custom gateways

Create custom gateways for private LLM deployments or specialized provider integrations. See [Custom Gateways](https://mastra.ai/models/gateways/custom-gateways) for implementation details.

## Built-in gateways

- [Azure OpenAI](https://mastra.ai/models/gateways/azure-openai)
- [Netlify](https://mastra.ai/models/gateways/netlify)
- [OpenRouter](https://mastra.ai/models/gateways/openrouter)
- [Vercel](https://mastra.ai/models/gateways/vercel)