ChatGPT and Lumi, side by side
Every row comes from public material, numbered against the source list below and checked on 2 Oct 2026. Where something is not published, we say so rather than guess. Features change; check the source before you decide.
| Feature | ChatGPT | Lumi |
|---|---|---|
| What it is[1][6][9] | ChatGPTA general-purpose AI assistant from OpenAI, for any subject or task | LumiAdaptive practice, diagnostics and revision app for NEET UG and JEE, with free lessons, notes and a question bank on lumineet.com |
| Exam-specific content[2][3][5][7][8][9] | ChatGPTNone described on the OpenAI pages we checked; you supply the questions, notes or topic | LumiNEET and JEE questions, with your answers tracked on a map of over 12,000 NEET and over 11,000 JEE concepts; free NEET question bank, NCERT notes and lessons on lumineet.com |
| Study features[2][3][6] | ChatGPTStudy mode: Socratic-style guiding questions, hints, step-by-step explanations and knowledge checks with feedback | Lumi24x7 AI tutor for questions and explanations; custom tests by topic and difficulty |
| Study material[3][8][9] | ChatGPTYou upload class notes, PDFs, slides or a photo of a maths or science problem | LumiReady-made chapter content: NCERT notes, doubts pages and interactive lessons with simulations, free on lumineet.com |
| Practice questions[3][6][7] | ChatGPTCreates practice questions or flashcard-style review when you ask | LumiQuestion practice and adaptive exams in the app; a free bank of 780 verified NEET questions with full solutions on lumineet.com |
| Revision scheduling[2][3][5] | ChatGPTNot stated publicly as a feature | LumiFSRS at a desired retention of 0.9 |
| Ability estimate[2][3][5] | ChatGPTNot stated publicly | Lumi2PL Item Response Theory per subject |
| Platforms[3][6][7][8][9] | ChatGPTWeb, iOS and Android | LumiiOS and Android app; notes, lessons and question bank on lumineet.com |
| Price[4][6] | ChatGPTFree plan, plus paid Go, Plus and Pro plans | LumiFree plan and paid monthly plans; current plans in the app |
What ChatGPT offers
- One assistant for every subject and every kind of question.
- Step-by-step walkthroughs of a photographed problem from your own book or worksheet.
- Explanations rephrased, simplified or given as an analogy on request.
- A Free plan, with study mode available across plans, per OpenAI.
What Lumi gives you
- NEET and JEE questions supplied for you, with every answer tracked on a map of over 12,000 NEET and over 11,000 JEE concepts.
- Revision scheduled by FSRS from your own answers, rather than planned by hand in a chat.
- An ability estimate per subject from Item Response Theory, beyond feedback on single answers.
- A 24x7 AI tutor that sits inside your practice, next to your schedule and results.
- Free on lumineet.com: NCERT notes and a doubts page for every NEET chapter, interactive lessons with simulations and YouTube classes for NEET and JEE, and a 780-question NEET bank with full solutions.
Check what any AI tells you
OpenAI's own help page says study mode can make mistakes, and asks you to double-check important information, naming exams among the cases. That applies to every AI explainer, including the AI tutor in Lumi's app. For NEET and JEE, the NCERT textbook is the reference to check a fact against, and Lumi's free NCERT notes follow it chapter by chapter.
The other difference is memory of your preparation. ChatGPT can use saved memories or past chats if you turn memory on, but OpenAI does not describe a scheduler that tracks which concepts you are forgetting. That tracking is the part Lumi is built around.
What does it cost?
- ChatGPT, as listed on chatgpt.com/pricing on 2 Oct 2026: a Free plan (its list includes limited messages with uploads) and paid Go, Plus and Pro plans. We could not confirm the rupee prices shown in India, so we do not quote them; check the page from India.
- Lumi: a free plan and paid monthly plans; current plans are in the app.
Frequently asked questions
Is ChatGPT good for NEET preparation?
It is useful for explanations and doubts. OpenAI describes a study mode that asks guiding questions, explains step by step and quizzes you, and it can work on a photo of a problem. OpenAI also says study mode can make mistakes, so check facts against NCERT. It does not describe NEET question banks or revision scheduling, which are what Lumi is built around.
Does ChatGPT have NEET questions?
The OpenAI pages we checked do not describe a NEET question bank. ChatGPT can write practice questions when you ask, from a topic or from notes you upload. Lumi supplies NEET and JEE questions mapped to concept atoms, and lumineet.com has a free bank of 780 verified NEET questions with full solutions.
Can ChatGPT schedule my NEET revision?
OpenAI does not describe a spaced repetition scheduler in ChatGPT. You can ask it to draft a plan, but it does not state that it tracks what you are forgetting. Lumi schedules revision with FSRS at a desired retention of 0.9.
Can I use ChatGPT and Lumi together?
Yes. Some students use ChatGPT for open-ended questions in any subject, and Lumi for NEET or JEE practice, mock exams and scheduled revision, since Lumi's schedule comes from the questions you answer.
Is ChatGPT free?
OpenAI lists a Free plan, and its help page says study mode is available across ChatGPT plans on web, iOS and Android. Paid Go, Plus and Pro plans add more usage. Lumi has a free plan and paid monthly plans, with current plans shown in the app.
Sources · Checked on 2 Oct 2026
- 1ChatGPT on the App Store (India)
- 2OpenAI: Introducing study mode
- 3OpenAI Help Center: Using study mode in ChatGPT
- 4ChatGPT pricing
- 5Lumi: How it works (FSRS, 2PL IRT, simpleKT)
- 6Lumi NEET AI on the App Store (India)
- 7Lumi: free NEET question bank (lumineet.com/questions)
- 8Lumi: free NCERT notes and doubts pages (lumineet.com/ncert)
- 9Lumi Learn: free interactive lessons for NEET and JEE (lumineet.com/learn)