Leanpub Header

Skip to main content
Go to Leanpub.comLeanpub Store Events Authors Readers Organizations Services

Swift + OpenAI & LangChain

Integrating external LLM APIs, RAG pipelines, and agentic workflows in iOS and macOS apps

This book is 100% completeLast updated on 2026年04月28日
Master AI integration on Apple platforms by bridging Swift 6 with OpenAI, LangChain, and autonomous agents. Build high-performance RAG pipelines using hardware-accelerated vector math and persistent local semantic memory. Architect thread-safe, real-time apps with strict concurrency, intelligent function calling, and efficient token streaming. Move from basic API calls to production-grade...
This book is 100% completeLast updated on 2026年04月28日
Master AI integration on Apple platforms by bridging Swift 6 with OpenAI, LangChain, and autonomous agents. Build high-performance RAG pipelines using hardware-accelerated vector math and persistent local semantic memory. Architect thread-safe, real-time apps with strict concurrency, intelligent function calling, and efficient token streaming. Move from basic API calls to production-grade...

Minimum price

9ドル.99

15ドル.99

You pay

Author earns

$

Also available for 1 book credit with a Reader Membership

Buying multiple copies for your team? See below for a discount!

EPUB
About
  1. About
  2. Packages
  3. Author
Swift + OpenAI & LangChain

About

About the Book

Master AI Integration on Apple Platforms with Swift 6, OpenAI, and LangChain!

The next generation of iOS and macOS apps won't just follow instructions—they will reason, act, and learn. Are you ready to build them? Volume 8 of the Swift & AI Masterclass is the definitive guide to integrating external LLMs into production-grade Apple applications.

This isn't just a book about API calls. It’s an architectural deep dive into building AI Agents and RAG (Retrieval-Augmented Generation) pipelines that are fast, safe, and cost-effective. Learn how to transform raw PDFs into searchable high-dimensional vectors, manage long-running "Reasoning Loops" with the ReAct pattern, and handle streaming tokens in real-time without freezing your UI.

What’s Inside:
  • Swift 6 & Strict Concurrency: Use Actors and Sendable protocols to prevent data races in complex AI workflows.
  • Streaming & SSE: Implementation of real-time, typewriter-style responses using AsyncSequence and URLSession.bytes.
  • Semantic Search & Embeddings: Leverage Apple’s Accelerate framework for hardware-accelerated vector math (Cosine Similarity).
  • Function Calling & Tools: Teach GPT-4o and Claude 3.5 how to use your Swift code to perform real-world actions.
  • Offline Support with SwiftData: Cache embeddings locally to provide intelligent features even without an internet connection.
  • Memory Management: Master sliding windows and recursive summarization to stay within token limits and save costs.

Whether you are building a professional research assistant, a smart journaling app, or an autonomous task manager, this book provides the Theory, Basic Examples, and Advanced Applications needed to ship world-class AI features.

Bridge the gap between probabilistic AI and deterministic Swift code!

Team Discounts

Team Discounts

Get a team discount on this book!

  • Up to 3 members

    Minimum price
    24ドル.00
    Suggested price
    39ドル.00
  • Up to 5 members

    Minimum price
    39ドル.00
    Suggested price
    63ドル.00
  • Up to 10 members

    Minimum price
    69ドル.00
    Suggested price
    111ドル
  • Up to 15 members

    Minimum price
    99ドル.00
    Suggested price
    159ドル
  • Up to 25 members

    Minimum price
    149ドル
    Suggested price
    239ドル

Author

About the Author

Edgar Milvus

A veteran software engineer with 20 years of experience, I have dedicated my career to the art of automation. My philosophy is simple: programming should eliminate repetitive chores to unlock human creativity. This journey began early on with the development of custom code-generation tools and has evolved into a deep mastery of LLMs and their APIs. Today, I specialize in architecting AI-driven solutions that handle everything from complex coding and security tasks to advanced knowledge retrieval, transforming the way we interact with technology

The Leanpub 60 Day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms...

Earn 8ドル on a 10ドル Purchase, and 16ドル on a 20ドル Purchase

We pay 80% royalties on purchases of 7ドル.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between 0ドル.99 and 7ドル.98. You earn 8ドル on a 10ドル sale, and 16ドル on a 20ドル sale. So, if we sell 5000 non-refunded copies of your book for 20ドル, you'll earn 80,000ドル.

(Yes, some authors have already earned much more than that on Leanpub.)

In fact, authors have earned over 15ドル million writing, publishing and selling on Leanpub.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub

AltStyle によって変換されたページ (->オリジナル) /