Topic

Swift & iOS LLM Integration

12 posts on swift & ios llm integration — part of api integration on the n4n AI blog.

Unit testing LLM API calls in Swift with URLProtocol

Step-by-step swift urlprotocol llm api testing tutorial: stub ChatCompletions in XCTest, verify headers, and simulate token streaming for iOS apps.

July 17, 20263 min read

API integrationHow-to

Streaming chat completions in iOS with URLSession bytes

Learn how to implement ios urlsession bytes streaming to consume LLM chat completions in Swift, with runnable code and step-by-step integration guidance.

July 17, 20262 min read

API integrationHow-to

Storing LLM API keys securely in iOS Keychain

Learn how to implement secure ios keychain api key storage for LLM tokens in Swift, with runnable code and verification steps for production iOS apps.

July 17, 20264 min read

API integrationHow-to

Rate limit handling in Swift LLM API clients

Practical steps to build a Swift LLM API client that survives rate limits with retries, throttling, and fallback. Includes runnable Swift code.

July 17, 20262 min read

API integrationTutorial

Parsing LLM API responses in Swift with Codable

Hands-on tutorial: swift codable llm api parsing for iOS. Define Codable structs for OpenAI-style chat responses and decode JSON reliably.

July 17, 20263 min read

API integrationHow-to

Handling network errors in iOS LLM API integrations

Learn practical ios network error handling llm api techniques in Swift: retries, timeouts, decoding failures, and graceful degradation for shipping apps.

July 17, 20264 min read

API integrationComparison

Combine vs async/await for Swift LLM API clients

Head-to-head comparison of Combine vs async await Swift LLM clients across streaming, cancellation, ergonomics, and cost. Which concurrency model fits your app.

July 17, 20264 min read

API integrationGuide

Background URLSession tasks for long LLM requests

A practical guide to implementing iOS background URLSession tasks for long LLM requests: configure file-based upload tasks, handle delegates, and avoid pitfalls.

July 17, 20263 min read

API integrationTutorial

Calling the OpenAI API from Swift with URLSession

Hands-on Swift tutorial: call the OpenAI API from iOS with URLSession. Build a typed client, parse JSON, stream tokens, and handle errors. No third-party SDKs required.

July 16, 20263 min read

API integrationTutorial

Building an iOS chat app with n4n and SwiftUI

Step-by-step tutorial for building an iOS chat app with n4n and SwiftUI: SwiftUI views, async streaming via OpenAI-compatible API, and SSE parsing.

July 16, 20262 min read

API integrationTutorial

Building a SwiftUI chat interface for an LLM API

Step-by-step tutorial for building a SwiftUI chat interface for an LLM API on iOS, with networking, streaming, and state code.

July 16, 20262 min read

API integrationHow-to

Async/await for LLM API calls in Swift

Learn how to implement swift async await llm api calls in iOS apps with a practical step-by-step guide covering client setup, streaming, and error handling.

July 16, 20263 min read