---
title: Using a dynamic route
description: Send requests through an AI Gateway dynamic route using the OpenAI SDK or REST API.
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://edgetunnel-b2h.pages.dev/ai-gateway/llms.txt  
> Use this file to discover all available pages before exploring further. 

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# Using a dynamic route

Warning

Ensure your gateway has [authentication](https://edgetunnel-b2h.pages.dev/ai-gateway/configuration/authentication/) turned on and you have your upstream providers keys stored with [BYOK](https://edgetunnel-b2h.pages.dev/ai-gateway/configuration/bring-your-own-keys/).

## Examples

### OpenAI SDK

**JavaScript**

```js
import OpenAI from "openai";


const cloudflareToken = "CF_AIG_TOKEN";
const accountId = "{account_id}";
const gatewayId = "{gateway_id}";
const baseURL = `https://gateway.ai.cloudflare.com/v1/${accountId}/${gatewayId}/compat`;


const openai = new OpenAI({
  apiKey: cloudflareToken,
  baseURL,
});


try {
  const model = "dynamic/<your-dynamic-route-name>";
  const messages = [{ role: "user", content: "What is a neuron?" }];
  const chatCompletion = await openai.chat.completions.create({
    model,
    messages,
  });
  const response = chatCompletion.choices[0].message;
  console.log(response);
} catch (e) {
  console.error(e);
}
```

### Fetch

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/compat/chat/completions \
  --header 'cf-aig-authorization: Bearer {CF_AIG_TOKEN}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "dynamic/<your-dynamic-route-name>",
    "messages": [
      {
        "role": "user",
        "content": "What is Cloudflare?"
      }
    ]
  }'
```

### Workers

**index.ts**

```ts
export interface Env {
  AI: Ai;
}


export default {
  async fetch(request: Request, env: Env) {
    const response = await env.AI.gateway("default").run({
      provider: "compat",
      endpoint: "chat/completions",
      headers: {},
      query: {
        model: "dynamic/<your-dynamic-route-name>",
        messages: [
          {
            role: "user",
            content: "What is Cloudflare?",
          },
        ],
      },
    });
    return Response(response);
  },
};
```

## Response Metadata

The response from a dynamic route is the same as the response from a model. There is additional metadata used to notify the model and provider used, you can check the following headers

* `cf-aig-model` \- The model used
* `cf-aig-provider` \- The slug of provider used

```json
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{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/ai-gateway/","name":"AI Gateway"}},{"@type":"ListItem","position":3,"item":{"@id":"/ai-gateway/features/","name":"Features"}},{"@type":"ListItem","position":4,"item":{"@id":"/ai-gateway/features/dynamic-routing/","name":"Dynamic routing"}},{"@type":"ListItem","position":5,"item":{"@id":"/ai-gateway/features/dynamic-routing/usage/","name":"Using a dynamic route"}}]}
```