[AIG]added responses endpoint and examples

src/content/docs/ai-gateway/providers/openai.mdx

@@ -11,6 +11,18 @@ pcx_content_type: get-started
 https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai
 ```
 
+### Chat completions endpoint
+
+```txt
+https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions \
+```
+
+### Responses endpoint
+
+```txt
+https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses \
+```
+
 ## URL structure
 
 When making requests to OpenAI, replace `https://api.openai.com/v1` in the URL you’re currently using with `https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai`.
@@ -24,34 +36,31 @@ When making requests to OpenAI, ensure you have the following:
 - An active OpenAI API token.
 - The name of the OpenAI model you want to use.
 
-## Examples
+## Chat completions endpoint
 
-### cURL
+### cURL example
 
-```bash title="Request"
+```bash
 curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/completions \
-  --header 'Authorization: Bearer {openai_token}' \
-  --header 'Content-Type: application/json' \
-  --data ' {
-   		 "model": "gpt-4o-mini",
-   		 "messages": [
-        {
-          "role": "user",
-          "content": "What is Cloudflare"
-        }
-   		 ]
-   	 }
-'
+--header 'Authorization: Bearer {openai_token}' \
+--header 'Content-Type: application/json' \
+--data '{
+  "model": "gpt-4o-mini",
+  "messages": [
+    {
+      "role": "user",
+      "content": "What is Cloudflare?"
+    }
+  ]
+}'
 ```
 
-### Use OpenAI SDK with JavaScript
+### JavaScript SDK example
 
-If you are using a library like openai-node, set the `baseURL` to your OpenAI endpoint like this:
-
-```js title="JavaScript"
+```js
 import OpenAI from "openai";
 
-const apiKey = "my api key"; // defaults to process.env["OPENAI_API_KEY"]
+const apiKey = "my api key"; // or process.env["OPENAI_API_KEY"]
 const accountId = "{account_id}";
 const gatewayId = "{gateway_id}";
 const baseURL = `https://gateway.ai.cloudflare.com/v1/${accountId}/${gatewayId}/openai`;
@@ -65,17 +74,66 @@ try {
 	const model = "gpt-3.5-turbo-0613";
 	const messages = [{ role: "user", content: "What is a neuron?" }];
 	const maxTokens = 100;
-
 	const chatCompletion = await openai.chat.completions.create({
 		model,
 		messages,
 		max_tokens: maxTokens,
 	});
-
 	const response = chatCompletion.choices[0].message;
+	console.log(response);
+} catch (e) {
+	console.error(e);
+}
+```
+
+## OpenAI Responses endpoint
+
+### cURL example
+
+```bash
+curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/responses \
+--header 'Authorization: Bearer {openai_token}' \
+--header 'Content-Type: application/json' \
+--data '{
+  "model": "gpt-4.1",
+  "input": [
+    {
+      "role": "user",
+      "content": "Write a one-sentence bedtime story about a unicorn."
+    }
+  ]
+}'
+```
 
-	return new Response(JSON.stringify(response));
+### JavaScript SDK example
+
+```js
+import OpenAI from "openai";
+
+const apiKey = "my api key"; // or process.env["OPENAI_API_KEY"]
+const accountId = "{account_id}";
+const gatewayId = "{gateway_id}";
+const baseURL = `https://gateway.ai.cloudflare.com/v1/${accountId}/${gatewayId}/openai`;
+
+const openai = new OpenAI({
+	apiKey,
+	baseURL,
+});
+
+try {
+	const model = "gpt-4.1";
+	const input = [
+		{
+			role: "user",
+			content: "Write a one-sentence bedtime story about a unicorn.",
+		},
+	];
+	const response = await openai.responses.create({
+		model,
+		input,
+	});
+	console.log(response.output_text);
 } catch (e) {
-	return new Response(e);
+	console.error(e);
 }
 ```