Hands-on AI labs for testers · self-paced
Testing Fantasy Cloud is for testers who need to learn how AI systems fail: build a RAG assistant in a real lab, then break it.
Opens in November 2026, as a beta. Planned price: from €29 a month, VAT included, with a 7-day free trial.
Press Begin quest and the platform builds a private machine with the real tools on it, guides you through the exercises beside it, records your progress, and destroys the machine when you close the lab. Nothing to install.
Real screen · the lab panel beside the lesson
See it work
Real screens of the product, following a learner through the first quest.
Real screens · the learner app and the tool inside a lab
The lab
No shared server and no simulator. Each lab is a real machine in the EU (Ireland), started for one learner and reachable only by that learner.
Learner appSession APIQueue
The learner app asks the session API for a lab. The request is recorded and queued.
EC2 instance · 4 vCPU · 8 GiB
one per learner, from a launch template
A provisioner starts one virtual machine for this session (4 vCPU, 8 GiB) from a launch template and a checksummed tutorial package.
Tutorial stack (Compose)
Dify 1.16.1 · 16 services
The machine starts the tutorial's stack, here a 16-service Dify 1.16.1 installation, and reports four stages back. The learner sees them live.
Shared load balancerBrokerOwner check
A broker gives the lab its own random 32-character address behind a shared load balancer and checks on every request that the person opening it owns it.
TerminateSweeperMachine timer
Closing the lab, or reaching the four-hour limit, terminates the machine. A sweeper and the machine's own timer catch anything left behind.
REQUESTEDASSIGNEDPROVISIONINGREADYACTIVERELEASINGRELEASED
In the learner's words: Queued · Conjuring · Ready · Open · Closed
The platform
A machine of your own for every lab, built in minutes and removed when you finish.
How a lab is builtOne honest progress figure per quest and two badges. Kept between labs.
Your quest boardOne plan, monthly or yearly, with a 7-day trial. Payment and self-service changes will go through Stripe at opening.
PricingHow it works
Every tutorial is a quest with a plain outcome. Opening with Testus Patronus: build a RAG assistant, then break it. About 2 h 30 min.
The platform starts a machine for you alone, and the lab panel follows it from Queued to Ready and says how long it has been. It takes about 5 to 7 minutes. Read the first lesson while it builds.
Lessons and exercises on one side, your lab one click away.
A lab runs for up to four hours and you get a warning 15 minutes before it ends. Closing it destroys the machine. Your progress and badges stay.
Progress
Every quest has one progress figure and its badges, starting with Quest begun when you first enter. The platform keeps them, so they survive every lab you close. No points, no streaks, no numbers we made up.
Why it is different
| Video-course platforms | Generic cloud sandboxes | Testing Fantasy Cloud | |
|---|---|---|---|
| What you practise on | Usually a recording, sometimes a quiz | A blank machine or console | The real tool, installed and configured for the exercise |
| Set-up | Your own laptop and accounts | You build the stack yourself | None. Built for you in minutes |
| Guidance | Video, away from the tool | Usually none | The lesson sits beside the lab, exercise by exercise |
| Cost control | Not applicable | Your card, your risk | Time and spend limits are part of the platform |
| Progress | Videos watched | None | A stored figure and badges per quest |
Behind the scenes
The platform has a second application for the people who run it: today's labs at a glance, conference rooms with seat codes, the tutorial catalog and cost against a monthly ceiling. It is designed with a second sign-in factor for operators and a record of every operator action.
Where it comes from
Per-attendee cloud environments were run for hands-on tutorials at three conferences, on the earlier generation of the classroom. Testing Fantasy Cloud is its successor and has not itself run at a conference.
Earlier generation of the classroom
Best Tutorial Award AutomationSTAR 2025
“It was a pleasure to learn how to create a RAG. Paula did an excellent job with preparation, set and actual presentation. Fantastic documentation and step by step support was provided for everyone. It was an intensive and enlightening experience!”
Conference delegateEuroSTAR 2025
“Last year in Edinburgh, Paula’s tutorial was one of the first to sell out and was highly rated by attendees.”
“And my absolute highlight? The tutorial Testus Patronus: No Magic, Just AI with Your Company Context by Paula Bassagañas Òdena. Building a custom chatbot connected to our own JIRA data was both fun and practical.”
Jana ZientkováSenior Test Consultant
“I want to add a special thank you to Paula Bassagañas Òdena for a great and so well prepared tutorial on building our own RAG.”
Oleksandra KalmykovaStaff Software Engineer, Test, FDJ United
“The session was fantastic! The presentation was top-notch, clearly structured, and engaging. The hands-on portion was incredibly well-prepared, allowing us to apply what we learned effectively. Overall, it was a valuable learning experience.”
Conference delegateAutomationSTAR 2024
“We really liked it. Combination of theory and hands on exercises. Very good presentation skills.”
People Lead, Software DevelopmentDefence technology company
“Attending a tutorial by Paula Bassagañas Òdena is a no-regret move! Her knowledge combined with her enthusiasm and storytelling capabilities makes every tutorial a true joy filled with practical learnings you can start applying immediately!”
Sonja NešićStaff Engineer, bol
“Amazing tutorial! Really great explanations and the hands-on was so well prepared and useful”
Conference delegateAutomationSTAR 2024
“Very profesional, hands on session covering all the key points and really good guidance and content”
Conference delegateAutomationSTAR 2024
“Paula gave us a lot of useful and structured information. A real take away workshop”
Conference delegateEuroSTAR 2026
Where it stands
Taken from the platform repository’s own roadmap, in plain words.
Testing Fantasy is a one-person product company in Biberach an der Riß, Germany, founded by Paula Bassagañas, IT architect. Testing Fantasy Cloud is its product. Talk to the founder
Pricing
Every tutorial, a private lab each time and your progress. Prices include VAT.
First 100 subscribers
€250/ year
€20.83 a month, €98 less than paying monthly. VAT included.
€29/ month
Billed monthly. VAT included.
You keep this price for as long as you stay subscribed.
Get early accessOpens in November 2026, as a beta. No card is asked for before then.
After the first 100
€400/ year
€33.33 a month, €188 less than paying monthly. VAT included.
€49/ month
Billed monthly. VAT included.
The price once the 100 founding places are taken.
| Monthly | Yearly | |
|---|---|---|
| Founding price, first 100 subscribers | €29 | €250 |
| Standard price | €49 | €400 |
The founding price is for the first 100 subscribers. We do not show a live count here. At opening, after you sign in and before you enter a card, you will be shown the price you will pay. If the founding places are gone you will see the standard price and can stop there.
One lab open per tutorial at a time · up to 4 hours per lab
At opening you will pay by card, Apple Pay or Google Pay on Stripe's checkout page. Testing Fantasy will never see or store your card. No payment is taken before then.
Create your account with your email.
Start the trial on Stripe's checkout page; your card is not charged for 7 days.
Begin your first quest.
FAQ
Software testers and quality engineers who need to learn how AI systems fail. In the first tutorial, Testus Patronus, you build a RAG assistant in the real tool and then test where its answers go wrong. It is self-paced and you need only a browser.
Every tutorial in the catalog, a private lab each time you start one, and your progress and badges. One tutorial is available at opening, Testus Patronus: build a RAG assistant, then break it.
From the opening, the first 7 days will be free. You will enter a card when you start, and nothing will be charged until the trial ends. Cancel before then and you pay nothing. One trial per account.
The first 100 subscribers will pay €29 a month or €250 a year instead of €49 or €400, and keep that price for as long as they stay subscribed. The price you will pay will be shown after you sign in, before you enter a card.
Yes. The price you see is the price you will pay.
At opening: by card, Apple Pay or Google Pay, on Stripe's checkout page. Testing Fantasy will never see or store your card details. No payment is taken before the opening.
At opening, "Manage subscription" will open Stripe's customer portal, where you will be able to cancel, switch between monthly and yearly, update your card and download invoices. If you cancel, you keep access until the end of the period you have paid for.
Stripe will retry it and you will be able to update your card in the portal. The platform is designed so that a lab already running is not shut down because of a payment problem.
A virtual machine started for you alone, with 4 vCPU and 8 GiB of memory, running the tutorial's real software. For Testus Patronus that is a complete Dify 1.16.1 installation. It runs in the EU (Ireland).
It takes about 5 to 7 minutes to build, and you can read the first lesson meanwhile. A lab runs for up to four hours, with a warning 15 minutes before the end. When it closes the machine is destroyed, so keep anything you want elsewhere. Your progress stays.
Until the hosted model gateway is live, a lab needs a model key of your own. A key for each lab with a spending limit already works on our local stack with a real model, and the hosted gateway is being wired.
No. You need a browser. A laptop or desktop is the comfortable way to work in the lab.
No. The workshops are live sessions for teams, booked on testingfantasy.com. Testing Fantasy Cloud is self-paced and you subscribe on your own.
Yes. Write to us and we delete it.
Team plans are not available yet. Write to us and we will tell you when they are.
Leave your email address and we write to you when the platform opens.
Your address has been added to the waitlist.
We will email you when Testing Fantasy Cloud opens. If an email asks you to confirm your address, confirm it there.
That did not go through from this page.
You can try again, or leave your address on testingfantasy.com instead. Open the form on testingfantasy.com
Opens in November 2026, as a beta. Planned price: from €29 a month, VAT included.