You Asked ChatGPT to Quiz You Before the Midterm. Who Remembers What You Got Wrong
Monday night you pasted the week 5 lecture PDF into ChatGPT and typed "quiz me on this." It gave you ten decent questions. You got seven right, read the explanations for the three you missed, and felt ready. The intro psych midterm is Thursday. On Wednesday you open a new chat, paste the PDF again, and get ten different questions. Those three misses from Monday are gone.
This isn't a complaint about ChatGPT. It's good at what you asked it to do. The question is what you didn't ask it to do, and whether that matters for your exam.
What a general chatbot does well, honestly
Using ChatGPT, Claude or Gemini to study is a reasonable choice, and often enough on its own:
- Explaining. "Explain classical vs operant conditioning like I'm confused" is hard to beat.
- Instant practice. Asking to be quizzed is already active recall, which beats rereading.
- Flexibility. Any subject, any format, any follow-up question.
If your exam is tomorrow morning and it covers one lecture, open a chat and get quizzed. You don't need anything else.
What it doesn't keep track of
It gets harder when the exam covers eight lectures and is ten days away. Three things matter then that a fresh chat doesn't hold onto:
- Your misses. The best predictor of what you'll get wrong on Thursday is what you got wrong on Monday. Spaced repetition works by bringing exactly those questions back the next day, then at longer gaps. That needs a record that outlives the chat.
- The difference between "I remember this question" and "I understand this idea." If you get the same question right twice, you may just have remembered the question. Asking the same idea in a different way is the real check, and someone has to track which ideas have passed it.
- The calendar. Eight lectures, ten days: how many ideas do you need to lock in per day? A chat window doesn't know your exam date.
You can do all of this by hand with a chatbot: a spreadsheet of misses, re-pasting them each day, asking for rephrased versions. Most people don't keep it up past day two.
What Tali adds on top
Tali covers those three gaps, starting from the same PDFs you've been pasting:
- It keeps your material. Upload each lecture once (PDF, slides, Word, or photos). It's split into short notes, one idea each, with multiple-choice and fill-in-the-blank questions written from them.
- It remembers your misses. A wrong answer comes back tomorrow, then at longer intervals each time you get it right, and back to tomorrow if you miss it again. When you tap Practice, due reviews always come first. Questions you get wrong in the tutor chat count too.
- It asks twice, two ways. An idea only counts as mastered after you get it right on two different framings. The readiness page groups the ones you got right once and then missed in a new situation under "False confidence". Those are the ones to review the night before.
- It knows the date. Set the exam date and you get a daily target: ideas not yet mastered ÷ days left. Missing a day spreads across the rest of the week instead of piling up at the end.
- The chat stays tied to your notes. The tutor answers from your uploaded material first and shows the line it's drawing from. When it goes beyond your notes, it says so. A good answer you want to keep can be saved into the notebook.
| General chatbot | Tali | |
|---|---|---|
| Explains anything | Yes, and very well | Yes, starting from your lecture |
| Quizzes you right now | Yes | Yes |
| Brings back Monday's misses on Wednesday | Only if you paste them back | Automatically |
| Checks the same idea from a second angle | Only if you ask | That's what "mastered" requires |
| Knows your exam date | No | Daily target + review that narrows to this course in the last 14 days |
What it costs
- Free test, no account: upload one text-based PDF and get ten multiple-choice questions written from it, with an answer review at the end. It reads the first ~20,000 characters, and you get one a day. Your file isn't saved.
- With an account: 15 free credits on sign-up, no card. 1 credit = one uploaded file (up to 20 sections, about 16,000 characters). That covers notes, every question, unlimited practice, grading and reviews. Chat is 1 credit per 12 messages, voice 1 credit per 2 minutes.
- After that: $20 for 45 credits or $80 for 185 (credits don't expire), or $20/month for 60.
What it won't do: write questions about material you didn't upload, promise a grade, or be as good a general-purpose chatbot as the big ones. Keep using those for explanations.
Try it on one lecture first
Take the lecture you're least sure about and run the free ten-question test. No account needed. If you score well, a chatbot may really be all you need for this exam. If you don't, that's the case for keeping track of your misses until Thursday.
