Compact · mobile

Use Claude Haiku 3.5 with Swift (iOS)

Updated 2026-05-21 · By XALEN

How to use Claude Haiku 3.5 (Compact, ~20B) with Swift (iOS). Install, authenticate, and make your first API call in minutes. Working code example included.

Model
Claude Haiku 3.5
~20B · 200K context · $0.008 input
Framework
Swift (iOS)
mobile · SPM: xalen-swift

1. Install

SPM: xalen-swift

2. Code

import Foundation

func chat(_ question: String) async throws -> String {
    var request = URLRequest(url: URL(string: "https://api.xalen.io/v1/chat/completions")!)
    request.httpMethod = "POST"
    request.setValue("Bearer xln_test_YOUR_KEY", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.httpBody = try JSONSerialization.data(withJSONObject: [
        "model": "claude-haiku-3-5",
        "messages": [["role": "user", "content": question]]
    ])
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    let choices = json["choices"] as! [[String: Any]]
    let message = choices[0]["message"] as! [String: String]
    return message["content"]!
}

Claude Haiku 3.5 with Other Frameworks

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

Other Models with Swift (iOS)

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