ComparisonOpenAI's general-purpose AI assistant.
Cereby vs ChatGPT
ChatGPT can answer almost any question. Cereby is the AI study companion that knows your classes — it stays grounded in your course materials, tracks your performance and weak points, and turns any topic into the video, podcast, quiz, or deck you'll actually study from.
Side-by-side
Feature comparison
| Feature | Cereby | ChatGPT |
|---|---|---|
| General Q&A | Yes | Yes |
| Grounded in your uploaded sources | Yes (always cited) | Limited (custom GPTs) |
| Flashcards from your materials | Yes | No (manual prompting) |
| Quizzes from your materials | Yes | No (manual prompting) |
| Lecture / PDF / YouTube ingestion | Yes | Yes (limited per chat) |
| AI video lecture generated from sources | Yes | Limited (Sora, separate tool) |
| AI podcast generated from sources | Yes | No |
| Images & diagrams generated from sources | Yes | Yes (DALL·E, manual prompt) |
| Study guide generation | Yes | Limited (manual prompting) |
| Mind maps from sources | Yes | No |
| Spaced repetition tracking | Yes | No |
| Course/exam organization | Yes | No |
| Free tier | Yes | Yes (older models) |
Decision
Pick your fit
Why pick Cereby
- Stays grounded in your course materials — answers are cited to the source page or section.
- Pre-built study workflows — no need to prompt 'turn this into 20 flashcards' every time.
- Tracks what you've studied across sessions; ChatGPT chats are isolated.
- Built around the structure of a course (units, weeks, exams), not free-form conversation.
Best for
Students who want AI plus structure — turn course materials into flashcards, quizzes, and sessions automatically.
Why pick ChatGPT
- Genuinely general-purpose — code, writing, math, brainstorming, anything.
- Largest model behind it for raw reasoning tasks.
- Custom GPTs let advanced users build their own study agents.
Best for
Power users who already know how to prompt and don't mind rebuilding their workflow from scratch each session.
Questions
Frequently asked
Why use Cereby if I already pay for ChatGPT Plus?
Workflow speed. Cereby has built-in 'turn this into flashcards' and 'quiz me on this' actions; in ChatGPT you'd type that prompt manually each time and lose the structure across chats.
Does Cereby use GPT under the hood?
Cereby uses GPT-4o-mini, GPT-4o, and other models depending on the task. The difference is workflow, not raw model.
Can I just upload my PDF to ChatGPT and ask questions?
Yes, but each chat is isolated and ChatGPT doesn't track your study progress, generate flashcards by default, or organize materials by course.