--- title: Workers Bindings description: Reference for the AI binding with AI Gateway. Call Workers AI and third-party models with env.AI.run(), access log IDs, and use gateway methods for feedback, logging, and URLs. 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) # Workers Bindings The AI binding (`env.AI`) lets you call AI models and access AI Gateway features directly from your Worker. For a step-by-step setup guide, refer to [Set up Workers AI with AI Gateway](https://edgetunnel-b2h.pages.dev/ai-gateway/integrations/aig-workers-ai-binding/). ## Configuration Add an AI binding to your [Wrangler configuration file](https://edgetunnel-b2h.pages.dev/workers/wrangler/configuration/): * [ wrangler.jsonc ](#tab-panel-7188) * [ wrangler.toml ](#tab-panel-7189) **JSONC** ```jsonc { "ai": { "binding": "AI", }, } ``` **TOML** ```toml [ai] binding = "AI" ``` The binding is accessible in your Worker code as `env.AI`. If you're using TypeScript, run [wrangler types](https://edgetunnel-b2h.pages.dev/workers/wrangler/commands/general/#types) whenever you modify your Wrangler configuration file. This generates types for the `env` object based on your bindings, as well as [runtime types](https://edgetunnel-b2h.pages.dev/workers/languages/typescript/). ## `env.AI.run()` Runs an inference request through AI Gateway. Accepts Workers AI models (`@cf/` prefix) and third-party models (`{author}/{model}` format). **Workers AI model:** * [ JavaScript ](#tab-panel-7190) * [ TypeScript ](#tab-panel-7191) **JavaScript** ```js const resp = await env.AI.run( "@cf/moonshotai/kimi-k2.5", { prompt: "tell me a joke", }, { gateway: { id: "default", // or use a specific gateway name }, }, ); ``` **TypeScript** ```ts const resp = await env.AI.run( "@cf/moonshotai/kimi-k2.5", { prompt: "tell me a joke", }, { gateway: { id: "default", // or use a specific gateway name }, }, ); ``` **Third-party model:** * [ JavaScript ](#tab-panel-7192) * [ TypeScript ](#tab-panel-7193) **JavaScript** ```js const resp = await env.AI.run( "openai/gpt-4.1-mini", { messages: [{ role: "user", content: "tell me a joke" }], }, { gateway: { id: "default", // or use a specific gateway name }, }, ); ``` **TypeScript** ```ts const resp = await env.AI.run( "openai/gpt-4.1-mini", { messages: [{ role: "user", content: "tell me a joke" }], }, { gateway: { id: "default", // or use a specific gateway name }, }, ); ``` Third-party models require an AI Gateway and use [Unified Billing](https://edgetunnel-b2h.pages.dev/ai-gateway/features/unified-billing/). Cloudflare manages the provider credentials and deducts credits from your account. You do not need to supply your own API keys. Note [BYOK (Bring Your Own Keys)](https://edgetunnel-b2h.pages.dev/ai-gateway/configuration/bring-your-own-keys/) is not supported for third-party models called through the AI binding. To use your own provider keys, use the [provider-native endpoints](https://edgetunnel-b2h.pages.dev/ai-gateway/usage/providers/) instead. Browse available models in the [model catalog](https://edgetunnel-b2h.pages.dev/ai/models/). ### Gateway options The third argument to `env.AI.run()` accepts a `gateway` object with the following parameters: | Parameter | Type | Default | Description | | ---------- | ------- | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | id | string | _required_ | Name of your [AI Gateway](https://edgetunnel-b2h.pages.dev/ai-gateway/get-started/). Must be in the same account as your Worker. Use "default" to automatically create a gateway on the first authenticated request. Refer to [Default gateway](https://edgetunnel-b2h.pages.dev/ai-gateway/configuration/manage-gateway/#default-gateway) for details. | | skipCache | boolean | false | Skip the [cache](https://edgetunnel-b2h.pages.dev/ai-gateway/features/caching/) for this request. | | cacheTtl | number | — | [Cache TTL](https://edgetunnel-b2h.pages.dev/ai-gateway/features/caching/) in seconds. | | cacheKey | string | — | Custom [cache key](https://edgetunnel-b2h.pages.dev/ai-gateway/features/caching/) for this request. | | collectLog | boolean | — | Whether to [collect logs](https://edgetunnel-b2h.pages.dev/ai-gateway/observability/logging/) for this request. | | metadata | object | — | [Custom metadata](https://edgetunnel-b2h.pages.dev/ai-gateway/observability/custom-metadata/) to attach to the log entry. | ## `env.AI.aiGatewayLogId` Returns the log ID from the most recent `env.AI.run()` request. **TypeScript** ```typescript const myLogId = env.AI.aiGatewayLogId; ``` ## `env.AI.gateway()` Returns a gateway instance for accessing AI Gateway methods directly. **TypeScript** ```typescript const gateway = env.AI.gateway("my-gateway"); ``` The gateway instance exposes the following methods. ### `patchLog()` Sends feedback, score, and metadata for a specific log entry. All properties in the second argument are optional. **TypeScript** ```typescript await gateway.patchLog("my-log-id", { feedback: 1, score: 100, metadata: { user: "123", }, }); ``` **Returns:** `Promise` ### `getLog()` Retrieves details of a specific log entry. If the `AiGatewayLog` type is missing, run [wrangler types](https://edgetunnel-b2h.pages.dev/workers/languages/typescript/#generate-types). **TypeScript** ```typescript const log = await gateway.getLog("my-log-id"); ``` **Returns:** `Promise` ### `getUrl()` Returns the base URL for your AI Gateway. Pass an optional provider name to get the provider-specific endpoint. **TypeScript** ```typescript const baseUrl = await gateway.getUrl(); // https://gateway.ai.cloudflare.com/v1/my-account-id/my-gateway/ const openaiUrl = await gateway.getUrl("openai"); // https://gateway.ai.cloudflare.com/v1/my-account-id/my-gateway/openai ``` **Parameters:** Optional `provider` (string or `AIGatewayProviders` enum) **Returns:** `Promise` #### SDK integration examples **OpenAI SDK:** **TypeScript** ```typescript import OpenAI from "openai"; const openai = new OpenAI({ apiKey: "my api key", // defaults to process.env["OPENAI_API_KEY"] baseURL: await env.AI.gateway("my-gateway").getUrl("openai"), }); ``` **Vercel AI SDK with OpenAI:** **TypeScript** ```typescript import { createOpenAI } from "@ai-sdk/openai"; const openai = createOpenAI({ baseURL: await env.AI.gateway("my-gateway").getUrl("openai"), }); ``` **Vercel AI SDK with Anthropic:** **TypeScript** ```typescript import { createAnthropic } from "@ai-sdk/anthropic"; const anthropic = createAnthropic({ baseURL: await env.AI.gateway("my-gateway").getUrl("anthropic"), }); ``` ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://edgetunnel-b2h.pages.dev/ai-gateway/usage/worker-binding-methods/#page","headline":"Workers Bindings · Cloudflare AI Gateway docs","description":"Reference for the AI binding with AI Gateway. 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