AI SDK · Simpang Router docs

With the Anthropic provider:

import { createAnthropic } from "@ai-sdk/anthropic";
import { generateText } from "ai";

const simpang = createAnthropic({
  baseURL: "https://simpang.zakiego.com/api/v1",
  apiKey: process.env.SIMPANG_API_KEY,
});

const { text } = await generateText({
  model: simpang("claude-sonnet-4-5-20250929"),
  prompt: "Hi",
});

Or the OpenAI-compatible provider:

import { createOpenAICompatible } from "@ai-sdk/openai-compatible";

const simpang = createOpenAICompatible({
  name: "simpang",
  baseURL: "https://simpang.zakiego.com/api/v1",
  apiKey: process.env.SIMPANG_API_KEY,
});

Note the AI SDK's Anthropic provider wants /api/v1, unlike the Anthropic SDK itself.