OpenAI compatible API endpoints

Workers AI supports OpenAI compatible endpoints for text generation (/v1/chat/completions) and text embedding models (/v1/embeddings). This allows you to use the same code as you would for your OpenAI commands, but swap in Workers AI easily.

Normally, Workers AI requires you to specify the model name in the cURL endpoint or within the env.AI.run function.

With OpenAI compatible endpoints, you can leverage the openai-node sdk to make calls to Workers AI. This allows you to use Workers AI by simply changing the base URL and the model name.

import OpenAI from "openai";

const openai = new OpenAI({
	apiKey: env.CLOUDFLARE_API_KEY,
	baseURL: `https://api.cloudflare.com/client/v4/accounts/${env.CLOUDFLARE_ACCOUNT_ID}/ai/v1`,
});

// Use chat completions
const chatCompletion = await openai.chat.completions.create({
	messages: [{ role: "user", content: "Make some robot noises" }],
	model: "@cf/meta/llama-3.1-8b-instruct",
});

// Use responses
const response = await openai.responses.create({
	model: "@cf/openai/gpt-oss-120b",
	input: "Talk to me about open source",
});

const embeddings = await openai.embeddings.create({
	model: "@cf/baai/bge-large-en-v1.5",
	input: "I love matcha",
});

curl --request POST \
  --url https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/v1/chat/completions \
  --header "Authorization: Bearer {api_token}" \
  --header "Content-Type: application/json" \
  --data '
    {
      "model": "@cf/meta/llama-3.1-8b-instruct",
      "messages": [
        {
          "role": "user",
          "content": "how to build a wooden spoon in 3 short steps? give as short as answer as possible"
        }
      ]
    }
'

These endpoints are also compatible with AI Gateway.