Platform Performance
Performance that
holds up.
Every AI model behind ThunderStudy AI is now free — but nothing about how it performs has changed. Here's what's running under the hood, and how we help you track your own performance over time.
2 / day
Mock tests, free
5 / week
Mock tests, free
~4,000
Words extracted per PDF
100%
Of models, unlocked free
AI Performance
Going free didn't mean going slower
Free pricing changed the bill, not the engine.
Same Tiny AI engine
The same lightweight, purpose-built AI engine generates every mock test — nothing was swapped for a weaker model to cut costs.
Same question quality
Question difficulty, exam-pattern accuracy, and topic relevance are held to the same bar as before — performance is high as pre-level, by design.
Fair-use caps, not throttling
Daily and weekly limits exist only to keep the engine available to every student equally — they're not a quality or speed cutback.
Your Performance
Track your own progress, not just a score
Instant score breakdown
The moment you submit, see your total score, time taken, and a question-by-question right/wrong breakdown.
Topic-wise review
Walk back through every question with the correct answer shown, so you know exactly what to study next.
Saved test history
Every attempt — topic, difficulty, and score — is saved on your device, so you can see how you're improving over time.
Why Limits Exist
Fair use, not a downgrade
Keeping every model free for every student means sharing the engine fairly. The 2-a-day / 5-a-week cap is the only thing that changed — the AI behind it didn't.
FAQ
Common questions
Did performance drop now that everything is free?
No. The Tiny AI engine, question quality, and generation speed are exactly the same as before — nothing was scaled down to make it free.
Why is there a daily and weekly limit if it's free?
The 2-a-day / 5-a-week limit exists purely so the free engine stays available and fair for every student, not because of any drop in quality or speed.
Where is my performance history stored?
Locally, on your own device. Every test you take is saved with its topic, difficulty, and score so you can track your own progress over time.
Can I see which topics I'm weak in?
Yes — the results screen breaks down your answers question by question, so you can see exactly which topics or question types to revisit.
See your performance for yourself
Take a free mock test and get your first score breakdown in minutes.
Start Free Mock Test