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Workers AI

Use AI Gateway for analytics, caching, and security on requests to Workers AI. Workers AI integrates seamlessly with AI Gateway, allowing you to execute AI inference via API requests or through an environment binding for Workers scripts. The binding simplifies the process by routing requests through your AI Gateway with minimal setup.

REST API

To interact with a REST API, update the URL used for your request:

  • Previous:
https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model_id}
  • New:
https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/workers-ai/{model_id}

For these parameters:

Examples

First, generate an API token with Workers AI Read access and use it in your request.

Request to Workers AI llama model
curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/workers-ai/@cf/meta/llama-3.1-8b-instruct \
 --header 'Authorization: Bearer {cf_api_token}' \
 --header 'Content-Type: application/json' \
 --data '{"prompt": "What is Cloudflare?"}'
Request to Workers AI text classification model
curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/workers-ai/@cf/huggingface/distilbert-sst-2-int8 \
  --header 'Authorization: Bearer {cf_api_token}' \
  --header 'Content-Type: application/json' \
  --data '{ "text": "Cloudflare docs are amazing!" }'

OpenAI compatible 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.


Request to OpenAI compatible endpoint
curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/workers-ai/v1/chat/completions \
 --header 'Authorization: Bearer {cf_api_token}' \
 --header 'Content-Type: application/json' \
 --data '{
      "model": "@cf/meta/llama-3.1-8b-instruct",
      "messages": [
        {
          "role": "user",
          "content": "What is Cloudflare?"
        }
      ]
    }
'

Workers Binding

You can integrate Workers AI with AI Gateway using an environment binding. To include an AI Gateway within your Worker, add the gateway as an object in your Workers AI request.

export interface Env {
  AI: Ai;
}


export default {
  async fetch(request: Request, env: Env): Promise<Response> {
    const response = await env.AI.run(
      "@cf/meta/llama-3.1-8b-instruct",
      {
        prompt: "Why should you use Cloudflare for your AI inference?",
      },
      {
        gateway: {
          id: "{gateway_id}",
          skipCache: false,
          cacheTtl: 3360,
        },
      },
    );
    return new Response(JSON.stringify(response));
  },
} satisfies ExportedHandler<Env>;

Workers AI supports the following parameters for AI gateways:

  • id string
    • Name of your existing AI Gateway. Must be in the same account as your Worker.
  • skipCache boolean(default: false)
  • cacheTtl number
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