Frontier · framework

Use Claude Opus 4.5 with Vercel AI SDK

Updated 2026-05-21 · By XALEN

How to use Claude Opus 4.5 (Frontier, ~2.5T) with Vercel AI SDK. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

Claude Opus 4.5

~2.5T · 200K context · $0.15 input

Framework

Vercel AI SDK

framework · npm install ai @ai-sdk/openai

1. Install

npm install ai @ai-sdk/openai

2. Code

import { generateText } from 'ai';
import { createOpenAI } from '@ai-sdk/openai';

const xalen = createOpenAI({
  apiKey: 'xln_test_YOUR_KEY',
  baseURL: 'https://api.xalen.io/v1'
});

const { text } = await generateText({
  model: xalen('claude-opus-4-5'),
  prompt: 'What is Claude Opus 4.5?'
});
console.log(text);

Claude Opus 4.5 with Other Frameworks

Python JavaScript React Next.js Flask FastAPI Django Express.js

Other Models with Vercel AI SDK

Vedika Standard Vedika Fast Vedika Pro Ultra Vedika Vision Vedika Code Vedika Astro Agent

200+ models. One API. Works with any framework.

Get API Key

Last updated: 2026-05-21