Models and Providers | Chat SDK by Vercel

Chat SDK uses AI SDK Gateway as the default provider, which provides unified access to multiple AI models including xAI's Grok models. Since Chat SDK is powered by the AI SDK, which supports multiple providers out of the box, you can always switch to a different provider of your choice, anytime.

To update the models, you will need to update the custom provider called myProvider at /lib/ai/models.ts shown below.

import { customProvider, extractReasoningMiddleware, wrapLanguageModel } from "ai";
import { gateway } from "@ai-sdk/gateway";
 
export const myProvider = customProvider({
  languageModels: {
    "chat-model": gateway.languageModel("xai/grok-2-vision-1212"),
    "chat-model-reasoning": wrapLanguageModel({
      model: gateway.languageModel('xai/grok-3-mini-beta'),
      middleware: extractReasoningMiddleware({ tagName: "think" }),
    }),
    "title-model": gateway.languageModel("xai/grok-2-1212"),
    "artifact-model": gateway.languageModel("xai/grok-2-1212"),
  },
});

You can replace the models with any other provider supported by the AI SDK Gateway. The gateway provides access to models from OpenAI, Anthropic, Google, xAI, and many other providers through a unified interface.

For example, if you want to use Anthropic's claude-3-5-sonnet model for chat-model, you can update the model identifier as shown below.

import { customProvider, extractReasoningMiddleware, wrapLanguageModel } from "ai";
import { gateway } from "@ai-sdk/gateway";
 
export const myProvider = customProvider({
  languageModels: {
    "chat-model": gateway.languageModel("anthropic/claude-3-5-sonnet-20241022"), // Using Anthropic model via gateway
    "chat-model-reasoning": wrapLanguageModel({
      model: gateway.languageModel('xai/grok-3-mini-beta'),
      middleware: extractReasoningMiddleware({ tagName: "think" }),
    }),
    "title-model": gateway.languageModel("xai/grok-2-1212"),
    "artifact-model": gateway.languageModel("xai/grok-2-1212"),
  },
});

You can find the provider library and model names in the provider's documentation. Once you have updated the models, you should be able to use the new models in your chatbot.