Skip to content
UdemyIT & SoftwarePaid courseAll LevelsCertificate

AI Errors & Hallucinations: Debugging & Fact-Checking (Udemy.com)

Spot, prevent, and fix AI hallucinations, logic errors, and coding assistant mistakes in real projects.

Created by: Alex Genadinik

Last updated February 2026

icon
What you will learn

  • Learn the difference between different AI errors: Hallucinations vs. regular errors vs. bad reasoning
  • Techniques to fix AI hallucinations and common errors
  • Avoid costly errors
  • Debug AI code assistant output with confidence.

How it compares

Against the other 1,182 rated Udemy courses in IT & Software on CourseDuck:

  • Rating4.3 out of 5higher than 20% of them
  • Reviews496#583 of 1,183 by number of reviews
  • Length0.9 hoursshorter than 97% of them
  • Last updatedFebruary 2026more recently than 67% of them

icon
Course Description

Not all AI mistakes are the same. Knowing the difference can save you time, money, and headaches. This course gives you the skills to identify, debug, and prevent AI hallucinations and errors across different use cases, from natural language generation to coding assistants.

We start with the fundamentals:


  • What is an AI hallucination? How to detect fabricated facts, fake citations, and confident falsehoods.

  • What is an AI error? How to spot faulty logic, outdated knowledge, and reproducible mistakes.

  • Quick reality-check techniques to verify AI output before it causes harm.

  • Best prompting strategies to reduce risk and improve accuracy.

Then we move into AI code assistant errors:


  • Debugging incorrect AI-generated code.

  • Avoiding subtle logic bugs and broken dependencies.

  • Testing AI-written functions before deployment.

  • Combining human review with AI-generated solutions for reliable output.

We’ll also cover real-world case studies where misunderstanding an AI’s mistake led to costly outcomes, and how small changes in workflow could have prevented them. You’ll see how these lessons apply not only to text and coding assistants, but also to AI-driven data analysis, customer service bots, and decision support systems.

Finally, you’ll learn a systematic AI output verification framework you can apply to any LLM, whether it’s ChatGPT, Claude, Gemini, or open-source models. This framework ensures you catch misinformation, prevent damaging decisions, and maintain quality in both everyday AI tasks and high-stakes professional work.

By the end of this course, you’ll be able to:


  • Tell hallucinations and errors apart instantly.

  • Design prompts that minimize AI mistakes.

  • Verify facts and sources efficiently.

  • Debug AI code assistant output with confidence.

Perfect for developers, tech professionals, and anyone using AI tools for content, decision-making, or coding.

icon
Udemy Discount

The discount is applied through our link. Open the course from here and Udemy's current promotional price is applied at checkout on most courses, no code to type.

Some courses are excluded from Udemy's promotions. If the price does not drop, clear your browser cookies and use the button again.

icon
Instructor Details

Alex Genadinik

One of the best teachers in the world because I teach with my heart. I help people get real results, many of whom have reached 7- and 8-figure businesses that I transparently showcase in my courses.


INSTRUCTOR BACKGROUND


3-time bestselling Amazon author, 20 years of successful entrepreneurship experience. Passionate instructor caring deeply about helping students reach full potential.

A number of my books are used in major US universities and high schools.

My current professional interests include Emotional Intelligence and productivity. I am constantly exploring ways to accomplish more with less time.

Additionally, I am interested in SEO, digital marketing, and creativity.

Originally from Ukraine.


COMMITMENT TO STUDENT SUCCESS


I go the extra mile to help students.

Education is more than acquiring knowledge or getting a job. True education is a beautiful experience, enriching your inner life while making your dreams a reality.

Invest in yourself, and give yourself the gift of elevating your life with world-class education, assisted by a caring and experienced instructor who supports you on your journey.


TEACHING AND COACHING HIGHLIGHTS


- 20+ time Udemy bestselling instructor.

- 10+ years of teaching experience.

icon
More courses by Alex Genadinik

$22.99

$79.99

$119.99

$64.99

$49.99

$19.99

icon
More IT & Software courses

$49.99

$10.99

$124.99

$19.99

$11.99

$19.99

icon
Reviews

4.3

496 ratings on Udemy

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

By Corrado Badino on 9/29/2026

good hints to deal with AI agents, it brings me back when I had to work with some software in my university and try to debug. THe basic concepts seems to be quite the same.....

By Vito Antonio Suglia on 8/26/2026

The course is well-structured and enables you to approach issues related to AI bugs or hallucinations with greater awareness. The instructor is excellent, and the examples are clear and practical.

By Monica Atzori on 8/25/2026

interessante concettualmente per quanto non si tratti del mio ambito di attività

By Giovanni Bisti on 8/17/2026

Even though the class is in English that is not my Moher Tongue I easily followed the stream of tought. The difference between an error is clearly explained and the solutions to deal with the two situation is affordable in a feasible manner.

By Corina STANUS on 8/13/2026

I enjoyed very much the course, it was beginner friendly and very well explained.

By Scott Figueroa on 8/13/2026

Alex provides real world issues and solutions. He is very authentic and has a great teaching style. I learned a lot and he made it enjoyable.

By Giovanni Pepe on 8/3/2026

credo che i concetti teorici sono adeguati per il mio profilo, il problema è metterli in pratica

By Maria Sinigaglia on 6/18/2026

molto veloce l'esposizione per chi non sa molto di a.i. comunque argomenti molto interessanti

By Carlo Celani on 6/10/2026

Molto interessante la prima parte relativa a Errori/Allucinazioni. In merito a come si testa un programma creato da AI non mi sembra molto diverso dal test su programmi creati da essere umani. Il messaggio importante è fare i test, che per me che sono ingegnere mi pare quasi una banalità.

By Don Murphy on 6/7/2026

Alex always strives to go above and beyond in his courses. The "error vs hallucination" discussion was great. It was a bit difficult to follow the debugging example because I'm just not familiar with vibe coding. On the other hand, working with an AI coder does seem a lot like working with a developer team. You think you are communicating, but sometimes you're really not.

Showing all 10 reviews on CourseDuck

Read all 496 reviews on Udemy

icon
Quality Score

No CourseDuck member has rated this course yet. Taken it? Give each part a thumbs up or down.

Content Quality
/
Video Quality
/
Qualified Instructor
/
Course Pace
/
Course Depth & Coverage
/

Overall Score : 86 / 100