---
title: OpenAI
description: Route OpenAI API requests through AI Gateway for observability and control.
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. 

[Skip to content](#%5Ftop) 

# OpenAI

[OpenAI ↗](https://openai.com/about/) helps you build with GPT models.

## Endpoint

**Base URL**

```plaintext
https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai
```

When making requests to OpenAI, replace `https://api.openai.com/v1` in the URL you are currently using with `https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai`.

**Chat completions endpoint**

`https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions`

**Responses endpoint**

`https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses`

## Examples

### OpenAI SDK

With Key in Request

* [ With Authenticated Gateway ](#tab-panel-7170)
* [ Unauthenticated Gateway ](#tab-panel-7171)

```js
import OpenAI from "openai";


const client = new OpenAI({
  apiKey: "YOUR_OPENAI_API_KEY",
  defaultHeaders: {
    "cf-aig-authorization": `Bearer {cf_api_token}`,
  },
  baseURL:
    "https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai",
});


const response = await client.chat.completions.create({
  model: "gpt-4o-mini",
  messages: [{ role: "user", content: "Hello, world!" }],
});
```

```js
import OpenAI from "openai";


const client = new OpenAI({
  apiKey: "YOUR_OPENAI_API_KEY",
  baseURL:
    "https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai",
});


const response = await client.chat.completions.create({
  model: "gpt-4o-mini",
  messages: [{ role: "user", content: "Hello, world!" }],
});
```

With Stored Keys (BYOK) / Unified Billing

```js
import OpenAI from "openai";


const client = new OpenAI({
  apiKey: "{cf_api_token}",
  baseURL:
    "https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai",
});


// Ensure your OpenAI API key is stored with BYOK
// or Unified Billing has credits
const response = await client.chat.completions.create({
  model: "gpt-4o-mini",
  messages: [{ role: "user", content: "Hello, world!" }],
});
```

### cURL

Responses API with API Key in Request

* [ With Authenticated Gateway ](#tab-panel-7172)
* [ Unauthenticated Gateway ](#tab-panel-7173)

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses \
  --header 'Authorization: Bearer {OPENAI_API_KEY}' \
  --header 'cf-aig-authorization: Bearer {CF_AIG_TOKEN}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-5.1",
    "input": [
      {
        "role": "user",
        "content": "Write a one-sentence bedtime story about a unicorn."
      }
    ]
  }'
```

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses \
  --header 'Authorization: Bearer {OPENAI_API_KEY}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-5.1",
    "input": [
      {
        "role": "user",
        "content": "Write a one-sentence bedtime story about a unicorn."
      }
    ]
  }'
```

Chat Completions with API Key in Request

* [ With Authenticated Gateway ](#tab-panel-7174)
* [ Unauthenticated Gateway ](#tab-panel-7175)

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions \
  --header 'Authorization: Bearer {OPENAI_API_KEY}' \
  --header 'cf-aig-authorization: Bearer {CF_AIG_TOKEN}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-mini",
    "messages": [
      {
        "role": "user",
        "content": "What is Cloudflare?"
      }
    ]
  }'
```

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions \
  --header 'Authorization: Bearer {OPENAI_API_KEY}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-mini",
    "messages": [
      {
        "role": "user",
        "content": "What is Cloudflare?"
      }
    ]
  }'
```

Responses API with Stored Keys (BYOK) / Unified Billing

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses \
  --header 'cf-aig-authorization: Bearer {CF_AIG_TOKEN}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-5.1",
    "input": [
      {
        "role": "user",
        "content": "Write a one-sentence bedtime story about a unicorn."
      }
    ]
  }'
```

Chat Completions with Stored Keys (BYOK) / Unified Billing

```bash
curl -X POST https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions \
  --header 'cf-aig-authorization: Bearer {CF_AIG_TOKEN}' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-mini",
    "messages": [
      {
        "role": "user",
        "content": "What is Cloudflare?"
      }
    ]
  }'
```

```json
{"@context":"https://schema.org","@type":"TechArticle","@id":"https://edgetunnel-b2h.pages.dev/ai-gateway/usage/providers/openai/#page","headline":"OpenAI · Cloudflare AI Gateway docs","description":"Route OpenAI API requests through AI Gateway for observability and control.","url":"https://edgetunnel-b2h.pages.dev/ai-gateway/usage/providers/openai/","inLanguage":"en","image":"https://edgetunnel-b2h.pages.dev/dev-products-preview.png","dateModified":"2026-04-20","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://edgetunnel-b2h.pages.dev/#website","name":"Cloudflare Docs","url":"https://edgetunnel-b2h.pages.dev/"}}
{"@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/usage/","name":"Using AI Gateway"}},{"@type":"ListItem","position":4,"item":{"@id":"/ai-gateway/usage/providers/","name":"Provider Native"}},{"@type":"ListItem","position":5,"item":{"@id":"/ai-gateway/usage/providers/openai/","name":"OpenAI"}}]}
```