FREE MAINS FULL TEST SERIES
The real UPSC CSE 2026 Mains paper. Free.
The actual UPSC Civil Services (Main) Examination 2026 question papers — reproduced by Lean Prep, not authored by us — are live to write right now. Submit your QCAB and unlock a real, examiner-style evaluation: a question-wise score, model answer, value addition, and similar PYQs. 2 full mock exams devised personally by Rahul Shekhar, AIR 75 UPSC CSE 2025, sit alongside it — 15 papers in all, GS1 through Essay in every test.
Open to every UPSC aspirant · free, no payment, no card
No payment, no card — completely free.
Including the official UPSC CSE 2026 Mains paper
GS1
General Studies I
GS2
General Studies II
GS3
General Studies III
GS4
Ethics, Integrity & Aptitude
Essay
Essay
THE PAPERS
GS1, GS2, GS3, GS4 and Essay
The full UPSC Mains exam, question for question — the 2 Lean Prep mocks and the real CSE 2026 paper alike. Every test in the series follows the identical structure below, GS1 through Essay.
| Paper | Questions | Structure | Marks |
|---|---|---|---|
| GS1 General Studies I | 20 questions | Section A: Q1–10 at 10 marks each (150 words) · Section B: Q11–20 at 15 marks each (250 words) | 250 |
| GS2 General Studies II | 20 questions | Section A: Q1–10 at 10 marks each (150 words) · Section B: Q11–20 at 15 marks each (250 words) | 250 |
| GS3 General Studies III | 20 questions | Section A: Q1–10 at 10 marks each (150 words) · Section B: Q11–20 at 15 marks each (250 words) | 250 |
| GS4 Ethics, Integrity & Aptitude | 19 questions | Section A: 13 sub-parts at 10 marks each (130 marks) · Section B: 6 case studies at 20 marks each (120 marks) | 250 |
| Essay Essay | 8 topics · write 2 | 2 sections of 4 topics each, choose 1 per section · 1000–1200 words each · 125 marks each | 250 |
THE SCHEDULE
3 full tests. All open.
Each full test is a complete 5-paper Mains exam. All 3 are live and stay live — write them in any order, at your own pace. Full Test 3 is not a Lean Prep mock: it is the actual UPSC CSE 2026 Mains paper, reproduced for reference.
Opened 8 August 2026
5 papers · 250 marks each · question paper + QCAB
Opened 20 August 2026
5 papers · 250 marks each · question paper + QCAB
Written by candidates 21–23 August 2026
5 papers · 250 marks each · question paper + QCAB
Official Question Paper · Reproduced by Lean Prep for reference. Not a Lean Prep-authored test.
THE MOCK PAPER SETTER
The 2 mocks, devised by Rahul Shekhar
Full Test 3 is different — it is the official UPSC CSE 2026 Mains paper, reproduced by Lean Prep, not one of his.
Every paper across the 2 mock exams — all 10 of them, GS1 through Essay — is set personally by Rahul Shekhar, an IIT Kanpur graduate who secured AIR 75 in UPSC CSE 2025. No outsourced question banks, no recycled sets.
WHO CAN JOIN
Open to every UPSC aspirant · free, no payment, no card
Anyone preparing for UPSC Mains can join — whether you sit the exam this cycle or the next. Sign in, hit join, and all 15 papers are yours, the real CSE 2026 paper included. There is nothing to pay, no card to enter, and no eligibility document to upload.
No eligibility check
Open to everyone preparing for UPSC Mains — this cycle or the next, first attempt or fifth. No admit card, no proof of registration, nothing to upload before you start.
Free, in full
All 3 full tests, all 15 papers, the QCAB booklets, and a full evaluation on every submission. No payment, no card, no trial that expires.
HOW IT WORKS
From paper to feedback
- 1
Join for free
No payment, no card — join the Mains Full Test Series from your dashboard.
- 2
Download the paper + QCAB
Each test ships with the question paper PDF and a QCAB to write in.
- 3
Write it like the real exam
3 hours, 250 marks, on paper — print the QCAB and write by hand exactly as in the real exam.
- 4
Upload your QCAB
A photo or a PDF is all it takes.
- 5
Unlock your evaluation
A real score, model answer, value addition, and similar PYQs.
THE PAYOFF
Submit. Then unlock the real evaluation.
The moment you submit your QCAB, the same evaluation engine the paid batches use opens up for your attempt.
A real score
Marks out of 250 with a question-wise breakdown — an examiner-style read, not a thumbs-up.
Model Answer
An expert-grade answer with the structure, intro, and conclusion examiners actually reward.
Value Addition
Facts, data, committee names, reports, quotes, and examples to lift every answer a band higher.
Similar PYQs
See exactly how UPSC has asked this theme before — and how the demand has shifted.
FAQs
Quick answers
Is the Mains Full Test Series really free?
Yes — every test, all 15 papers, completely free. That includes the real UPSC CSE 2026 Mains paper. No payment, no card.
Who can join right now?
Anyone preparing for UPSC Mains can join — whether you sit the exam this cycle or the next. Sign in, hit join, and all 15 papers are yours, the real CSE 2026 paper included. There is nothing to pay, no card to enter, and no eligibility document to upload.
Are the 2026 papers the real UPSC paper?
Yes. Full Test 3 reproduces the actual UPSC Civil Services (Main) Examination 2026 question papers, exactly as they were set — Lean Prep did not write these. It is a reproduction for reference and evaluation, not a Lean Prep-authored test.
Which should I write first?
If you sat CSE 2026 Mains, write the official paper first while it is still fresh — comparing your actual answers to the model answer is the most useful thing you can do right now. If you are preparing for a future cycle, start with either mock and treat the official paper as a benchmark once your writing is warmed up.
What is a QCAB?
The Question-cum-Answer Booklet — the same answer format used in the real UPSC Mains exam. Print it and write your answers by hand, exactly as you will on exam day.
Are all the papers open now?
Yes — every test, including the official CSE 2026 paper, is open now and stays open, so you can write each one whenever you are ready.
How many papers are there?
15 in all — 2 full mock exams (10 papers) plus the real UPSC CSE 2026 Mains paper (5 papers): GS1, GS2, GS3, GS4 (Ethics, Integrity & Aptitude) and Essay in each. Every one is a real 3-hour, 250-mark paper.
What do I get after I submit?
A real score with a question-wise breakdown, a model answer, value addition points, and similar PYQs — the same evaluation engine the paid batches use.
Who sets the papers?
Rahul Shekhar, AIR 75 in UPSC CSE 2025 (IIT Kanpur), sets both mock papers personally. Full Test 3 is the official UPSC CSE 2026 Mains paper — reproduced by Lean Prep for reference, not authored by us.
What's the difference between the mock papers and the official paper?
Full Test 1 and Full Test 2 are Lean Prep mock exams, set personally by Rahul Shekhar in the identical UPSC format. Full Test 3 is not a mock — it is the actual UPSC Civil Services (Main) Examination 2026 question papers, reproduced exactly as candidates sat them this cycle. All three are written and evaluated the same way.
Is this for Mains 2026 or Mains 2027?
Both. If you are sitting Mains 2026, the official paper is the exam you just wrote — evaluate it while it is fresh. If you are targeting a future cycle, the mocks and the official paper together give you three full-length rehearsals in the identical UPSC format.
It's free. Join today.
Write the real UPSC CSE 2026 Mains paper — or either mock — and get real, examiner-style feedback. No payment, no card.
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