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All of AI: ChatGPT, Midjourney, Stable Diffusion & App Dev (Udemy.com)

ChatGPT, Prompt Engineering, OpenAI API, GPTs, Chatbots, Automation, AI-Apps, Generative AI, Machine Learning, Copilot

Created by: Arnold Oberleiter

Last updated July 2026

Our take

Based on the ratings of 2,481 students, a sample of their written reviews and the syllabus, as the course stood in July 2026. No course pays to be reviewed.

Arnold Oberleiter's course is a wide survey of generative AI, written for people with no technical background. It runs about 35 hours across 395 lectures and 46 sections. The first half is mostly ChatGPT: prompting, custom GPTs, the OpenAI API, and a Flowise chatbot section. Then it moves on to Gemini, Claude and open source models, followed by image tools like Adobe Firefly, Midjourney, Leonardo and Stable Diffusion. Voice cloning, deepfakes and video close it out. App building gets only a couple of sections in the syllabus, so read it as a tour of tools.

Students say the teaching is the draw. Reviewers describe Arnie as clear, funny and thorough, and one self-described non-techie says it was not too heavy. Another points out that the sections are labeled well enough to skip to what matters. The complaints are fairly consistent. One reviewer had trouble with the recording sound, another disliked the accent, though a student who worried about it said the English turned out totally clear. A couple find it padded or too long to remember, and one says it is mostly review so far.

The rating is 4.4 from 2,481 reviews, and 1,725 of them are five stars. The course was last updated in July 2026. It suits someone who wants one place to see what AI can do, especially with images. People who already prompt well, or want depth in a single tool, will get more from a focused course.

Best forPeople new to AI who want one course covering ChatGPT prompting plus image tools like Midjourney and Firefly.
Skip it ifYou want depth in one tool or real app development, since most sections are short tool tours.

Pros

  • Short videos with clear explanations and examples, per several reviewers
  • Covers text, image, voice and video AI tools in a single course
  • Sections are labeled so experienced users can skip to the tools they need
  • No coding needed, and one non-technical student found it light going

Cons

  • Long at about 35 hours, and one reviewer says it is hard to remember every topic
  • A reviewer reports poor recording sound, and another struggled with the accent
  • Breadth over depth: one reviewer called much of it unnecessary content
This course was so thorough and Arnie was humorous, knowledgeable, and endearing. This course has impacted how I use AI for the better.
Laura Major, a student

Listed for all levels but really for beginners: no coding is required, and the syllabus adds Google Colab sections for LoRA training and deepfakes.

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What you will learn

  • Introduction to AI: What Artificial Intelligence Is and What It Is Not
  • Detailed prompt engineering for Midjourney, ChatGPT, Dall-E, Stable Diffusion, Adobe Firefly and more
  • Understanding Learning Methods: Machine Learning, Deep Learning, Neural Networks
  • Examples of AI: FSD, LLMs, Voice Assistants, Diffusion Models, Deepfakes & More
  • Fundamentals of ChatGPT
  • The Basics of AI
  • All Functions of ChatGPT
  • The History of AI from DeepMind to AlphaGO by IBM
  • How LLMs (Large Language Models) Work
  • Using the OpenAI Playground
  • Working with the OpenAI API and Assistant API
  • How Diffusion Models Work
  • Building Your Own GPTs
  • Building Assistants with OpenAI
  • Building Simple Apps with the OpenAI API
  • Supervised Learning and Reinforcement Learning
  • Speech and Image Recognition
  • Everything About GPTs and the GPT Store
  • Creating a Builder Profile and Earning Money with GPTs
  • Generating Leads with GPTs
  • Integrating Zapier Actions into GPTs
  • Incorporating GPTs into Websites with Flowsie and Node JS
  • Overview of Programming Languages, Libraries, and Development Tools
  • Using Google Colab
  • Exploring GitHub and Huggingface
  • Details About LLMs: Parameters, Prompt Engineering, Multimodality
  • GPT Vision
  • Training Your Own Diffusion Models
  • Fine-Tuning of Diffusion Models [Loras] with Colab and Dreambooth
  • Everything About Loras and Models in Stable Diffusion
  • Creating Your Own Face with Stable Diffusion
  • Using Diffusion Models like Midjourney, Adobe Firefly, and Dall-E
  • Fine-Tuning of LLMs [GPT] in Google Colab
  • Text-to-Speech with Elevenlabs and Whisper
  • Creating Music Videos with Deforum
  • Social Media Videos with Wrapfusion and Kaiber
  • Deepfakes with WAV2Lip and Voice Cloning
  • AI Avatars with Midjourney, Elevenlabs, and D-ID
  • Ethical Concerns, Copyright, Privacy Issues
  • Create content faster than ever before through effective prompt techniques
  • Opportunities and risks of AI/ML like ChatGPT
  • AI Voice Tools: Easily create AI-generated speech for any use case and even clone your own voice completely
  • AI Video Tools: Create video presentations and quickly produce social media content
  • AI Photo Tools: Add movement to images, edit pictures using inpainting and outpainting
  • Combine AI tools for the best results with Upscaling and more
  • Learn, improve, and debug code programming
  • Programming your own games
  • Monetizing your AI skills and learn how to make Money with AI
  • Side Hustle Ideas and how to Sell ChatBots
  • Building a AI Automation Agency
  • Boosting productivity in all areas of your life
  • SEO optimization of your content
  • All parameters and modifiers in Leonardo and Midjourney

Course content

46 sections · 395 lectures · 35 hours of video 26 articles

  1. 1Introduction 2 free previews5 lectures · 21 min
  2. 2The easy Basics about AI, Machine Learning, Deep Learning, Neural nets and LLMs5 lectures · 29 min
  3. 3ChatGPT Basics: Overview of the functions in the free and paid version 1 free preview8 lectures · 49 min
  4. 4History and Future of AI, from AlphaGo to the Foundation Agent3 lectures · 26 min
  5. 5Prompt Engineering in LLMs like ChatGPT 2 free previews12 lectures · 50 min
  6. 6Advanced Prompt Engineering6 lectures · 36 min
  7. 7More Prompting tricks and secuences for LLMs9 lectures · 35 min
  8. 8Making Prompt Generators and use special tecniques4 lectures · 29 min
  9. 9Real World Examples how you can use ChatGPT8 lectures · 47 min
  10. 10ChatGPT as Author and Text Assistant7 lectures · 31 min

Who it is for

The instructor says it suits

  • This course is aimed at everyone who is interested in using AI tools like ChatGPT, regardless of their background.
  • To everyone who wants to learn something new
  • To entrepreneurs who want to become more efficient and save money
  • Private individuals who are interested in AI and want to build their own models.

What you need before you start

  • No programming skills or technical knowledge required, everything is shown step by step.

How it compares

Against the other 815 rated Udemy courses in Web Development on CourseDuck:

  • Rating4.4 out of 5higher than 33% of them
  • Reviews2,481#83 of 816 by number of reviews
  • Length35.3 hourslonger than 90% of them
  • Last updatedJuly 2026more recently than 88% of them

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Course Description

Ever wondered how AI is transforming industries and creating opportunities that were unimaginable just a few years ago?

"AI will not take your job, but someone who knows how to use AI might," says Richard Baldwin.

Are you ready to master the art of generating everything from captivating video scripts to innovative business strategies, all at the touch of a button?

Dive into 'All of AI: ChatGPT, Midjourney, Stable Diffusion & App Dev'—where you'll learn to harness the full potential of AI tools like ChatGPT, Midjourney, and more. Transform your creative vision and technical skills into real-world applications and lead the charge in the AI revolution.

This masterclass is perfect for anyone, from developers and creatives to entrepreneurs and enthusiasts, who wants to understand and apply cutting-edge AI technologies like ChatGPT, Leonardo AI, Dall-E, Google Bard, Gemini by Deepmind, Midjourney, and Stable Diffusion. Whether your interest lies in content creation, social media, advertising, SEO, YouTube scripts, business communication, or even gaming and art, this course has got you covered.

In this course, you will dive deep into the heart of AI and learn how to create your own models and apps using the latest technologies like ChatGPT, GPTs, the Assistant API, diffusion models, Google Colab, and more.


Here's what you can expect:


  • In-Depth AI Knowledge: Gain a solid foundation in AI basics, including the history and development from DeepMind to AlphaGo, machine learning, deep learning, neural networks, Diffusion Models and Large Language Models (LLMs).

  • Prompt Engineering: Unlock the full potential of AI with advanced prompt engineering techniques. In this course, you'll learn how to craft precise and effective prompts to guide AI tools like ChatGPT, Midjourney, and Stable Diffusion to produce desired outcomes. Whether you're generating text, creating images, or developing complex AI models, mastering prompt engineering allows you to fine-tune inputs to achieve high-quality, relevant outputs for any content or application scenario.

  • Mastering Midjourney: Uncover the secrets of Midjourney to transform text into stunning visuals tailored for any platform. Learn to navigate aspect ratios and styles perfect for enhancing digital marketing or artistic projects, making every image a masterpiece of your making.

  • Stable Diffusion: Delve into Stable Diffusion's capabilities for custom image generation and editing. Master techniques for style, composition, and detail adjustments to create visuals that stand out in personal, professional, and social media settings.

  • Adobe Firefly: Harness the power of Adobe Firefly to seamlessly integrate AI into your creative processes. Gain skills in generating and refining images that align perfectly with specific project needs, ensuring your visuals resonate across all media.

  • DALL-E: Explore DALL-E’s revolutionary ability to generate detailed images from simple descriptions. Learn to manipulate elements for specific contexts and dimensions, empowering you to produce versatile and impactful visuals for any use case.

  • Practical Skills and Applications: Learn to create effective prompts, integrate ChatGPT into custom applications, and develop GPT-based apps. Master generative art with Midjourney, Stable Diffusion, and DALL-E 3, delve into code generation, debugging, and documentation with ChatGPT, and even build websites and games like Snake.

  • Creative AI Tools: Experiment with AI video tools to create talking AI avatars, visually stunning videos, and dive into 3D world creation. Utilize AI photo tools for editing and personalizing images, exploring Leonardo AI for inpainting, outpainting, and more.

  • Sound and Music Innovation: Discover the fascinating world of text-to-audio and text-to-music creation.

  • Business and Marketing Applications: Generate innovative business ideas, optimize writing for business communication, and explore lead generation techniques.

  • Ethical Insights and Future Perspectives: Engage in discussions about AI's ethical considerations, copyrights, privacy, and future implications.

  • Interactive Learning Experience: With over 34 hours of content, lifetime access, regular updates, and quick support, you’ll be actively involved in learning through example projects, combining various AI tools for optimal application.

  • Comprehensive Toolset Knowledge: Get to grips with essential tools like Node.JS, Flowise, StackAI, Voiceflow, Dall-E 3, Midjourney, Stable Diffusion, Leonardo AI, D-ID, and many others.

  • Industry-Specific Applications: From creating music videos and social media content to developing speech and image recognition applications, the course provides insights into diverse industry applications.

  • Transformative Opportunities: Unleash your creativity, enhance productivity, and open up new income sources. Whether it's for personal development or professional advancement, this course prepares you for the AI-driven future.

  • Earn with AI: Learn how to monetize your skills through avenues like the GPT Store and more.

  • LLM and Diffusion Model Applications: Understand and apply the workings of Large Language Models (LLMs) and diffusion models.

  • GPT-Based Development: Develop your own GPT-based apps and assistants for various industries.

  • Speech and Image Recognition: Deepen your knowledge and create practical applications in these fields.

  • Monetization Opportunities: Explore avenues for earning money with your Ai-Skills

  • OpenAI API Mastery: Understand and apply the OpenAI API and Assistant API.

  • Custom GPT Integration: Build your own GPTs and integrate ChatGPT into custom applications like websites.

  • App Development Skills: Develop apps using tools like Google Colab, GitHub, and various programming languages.

  • Advanced AI Techniques: Master fine-tuning LLMs and diffusion models, including creating your own models and using Lora Fine-Tuning for specific image creation.

  • Creative Media Projects: Create music videos, social media content, and deepfakes with tools like Stable Diffusion & Google Colab.

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Instructor Details

Arnold Oberleiter

English text below the German text!


Hallo zusammen,

Ich bin Arnold "Arnie" Oberleiter, Dozent im Bereich Künstliche Intelligenz.

Es ist mein Ziel, mein Wissen und meine Begeisterung für KI mit euch zu teilen.

Ich glaube fest daran, dass ein tiefes Verständnis von KI einen enormen Vorteil in unserer technologiegetriebenen Welt bietet. Ich befasse mich mit LLMs (die Technologie hinter ChatGPT) bereits seit 2018-2019, als es mit Transformer & DIffusion losging.

Arnie


English:


Hi everyone,

I’m Arnold “Arnie” Oberleiter, an instructor in the field of artificial intelligence.

My goal is to share my knowledge and enthusiasm for AI with you.

I strongly believe that a deep understanding of AI offers a huge advantage in our technology-driven world. I’ve been working with LLMs — the technology behind ChatGPT — since 2018–2019, back when Transformers and diffusion models started taking off.

Arnie

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Reviews

4.4

2,481 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Wykeem Bryant on 8/24/2026

I speak English as my first language. Most of the AI Practitioner-type courses like this one, have people I cannot clearly understand with their accents (compared to my American accent). This difference in accent makes absorbing their content all the more difficult

By Gaurav Saxena on 1/2/2026

I don’t like the level of details shared in explanation

By Mauricio Mancias on 3/14/2025

Excellent course, very extensive and comprehensive. It helped me understand how artificial intelligence works and how to use different tools. Arnie is an excellent teacher; his way of explaining is clear and accessible. I plan to buy more of his courses and highly recommend it to anyone looking to get started in the world of AI.

By Jan Prerovsky on 2/28/2025

I really enjoyed this course! The structure is well-organized, making it easy to follow, even if you're new to AI. The content is packed with valuable insights, covering both the basics and more advanced concepts in a clear and engaging way. Arnie the instructor does a fantastic job explaining complex topics in a simple, approachable manner. If you're looking to understand AI without getting overwhelmed, this course is a great choice!

By Jim stephenson on 12/16/2024

I can and definetly will say that this is the best course i have done on Udemy and the first course i have ever given a 5 star rating to. If you are like me and had only a superficial knowledge of what chatgpt could do, and what all the hype around AI was. then this is definetly the AI course that you should do. Arnie is passionate about the subject and has a calm relaxed engaging style. He covers basically everything about AI and definetly opens your eyes to AI and all its abilities and potential. Brilliant course that i would thoroughly recommend to anyone wanting to find out what AI is all about.

By Mikeh on 11/26/2024

This is, hands down, the most value I received from any course, on any subject. My objectives were rather simple: gain an understanding of how AI was being used today, understand the differences between all the different products in the market, and get a high-level understanding of how to use some tools. Arnold does this and so much more. He shows examples of the tools and shows how to use them, runs through the various commercial models and shows how to compare pricing between products, gives recommendations on which tools are best performers now, and so much more. Highly recommended and a great course...and an ongoing great resource to revisit.

By Joyce on 10/22/2024

This course is a game-changer! The 400 lessons are a true labor of love, with clear, concise explanations that made learning easy. Each class gave me actionable steps, and the content quality is top-notch. The deep learning in AI generation and LLMs exceeded my expectations, taking me from newbie to pro fast. I’m so grateful for the transformation this course has brought to my skills! Highly recommend!

By Nanfa Chittisane on 10/4/2024

Taught me what I wanted to know about AI, from what AI is, what are LLMs, prompt engineering in ChatGPT, what you can do with it, to the various image, text, speech, video generator platforms and how they compare. It also provided insight on how to monetize these tools as well as ethical considerations.

By Alizay Sohail Bhatti on 9/10/2024

Done with this lengthy course and I'm so happy that I took this because this was more than detailed which i didn't expect. He touched all aspects of ai including chat gpt, leonardo, midjourney, 11 labs with all the necessary details, he taught us how to earn money as well using these tools.

By Nargiza on 7/7/2024

Still on my journey to complete but I like the way how Arnold explains everything with the details. This course is about almost everything related to ai. music, video, anime, picture, prompts etc. The best course till now. Thank you for your effort and time.

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Quality Score

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Overall Score : 88 / 100