> ## Documentation Index
> Fetch the complete documentation index at: https://docs.portkey.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# AI Gateway

> The world's fastest AI Gateway with advanced routing & integrated Guardrails.

## Features

> **[Universal API](https://docs.portkey.ai/docs/aigw/product/ai-gateway/universal-api.md)**
>
> Use any of the supported models with a universal API (REST and SDKs)

> **[Cache (Simple & Semantic)](https://docs.portkey.ai/docs/aigw/product/ai-gateway/cache-simple-and-semantic.md)**
>
> Save costs and decrease latencies by using a cache

> **[MCP Support](https://docs.portkey.ai/docs/aigw/product/ai-gateway/remote-mcp.md)**
>
> Connect to Remote MCP severs, allowing you to connect external tools and data sources.

> **[Fallbacks](https://docs.portkey.ai/docs/aigw/product/ai-gateway/fallbacks.md)**
>
> Fallback between providers and models for resilience

> **[Conditional Routing](https://docs.portkey.ai/docs/aigw/product/ai-gateway/conditional-routing.md)**
>
> Route to different targets based on custom conditional checks

> **[Multimodality](https://docs.portkey.ai/docs/aigw/product/ai-gateway/multimodal-capabilities.md)**
>
> Use vision, audio, image generation, and more models

> **[Automatic Retries](https://docs.portkey.ai/docs/aigw/product/ai-gateway/automatic-retries.md)**
>
> Setup automatic retry strategies

> **[Circuit Breaker](https://docs.portkey.ai/docs/aigw/product/ai-gateway/circuit-breaker.md)**
>
> Configure per-strategy circuit protection and failure handling

> **[Load Balancing](https://docs.portkey.ai/docs/aigw/product/ai-gateway/load-balancing.md)**
>
> Load balance between various API Keys to counter rate-limits

> **[Canary Testing](https://docs.portkey.ai/docs/aigw/product/ai-gateway/canary-testing.md)**
>
> Canary test new models in production

> **[gRPC (Beta)](https://docs.portkey.ai/docs/aigw/product/ai-gateway/grpc.md)**
>
> Use gRPC transport for lower latency and efficient binary serialization

> **[Request Timeout](https://docs.portkey.ai/docs/aigw/product/ai-gateway/request-timeouts.md)**
>
> Easily handle unresponsive LLM requests

> **[Budget Limits](https://docs.portkey.ai/docs/aigw/product/model-catalog/integrations.md#3-budget-%26-rate-limits)**
>
> Set usage limits based on costs incurred or tokens used

> **[Rate Limits](https://docs.portkey.ai/docs/aigw/product/model-catalog/integrations.md#3-budget-%26-rate-limits)**
>
> Set hourly, daily, or per minute rate limits on requests or tokens sent

> **[Custom Hosts](https://docs.portkey.ai/docs/aigw/product/ai-gateway/custom-hosts.md)**
>
> Route requests to privately hosted or local models using custom host URLs

> **Gateway to other APIs**
>
> Call rerank, video, listen, and other provider paths through [https://aigw.portkey.ai/v1/](https://aigw.portkey.ai/v1/)... with the same configs and logging as unified routes

## Using the Gateway

The various gateway strategies are implemented using Gateway configs. You can read more about configs below.

> **[Configs](https://docs.portkey.ai/docs/aigw/product/ai-gateway/configs.md)**


## Related topics

- [Gateway Compatibility](https://docs.portkey.ai/docs/aigw/integrations/libraries/claude-code-gateway-compatibility.md)
- [Enterprise Gateway](https://docs.portkey.ai/docs/changelog/enterprise.md)
- [Gateway Registration](https://docs.portkey.ai/docs/aigw/self-hosting/hybrid-deployments/gateway-registration.md)
- [MCP Gateway](https://docs.portkey.ai/docs/aigw/product/mcp-gateway.md)
- [Gateway URLs](https://docs.portkey.ai/docs/aigw/product/enterprise-offering/org-management/gateway-urls.md)


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