At a Glance
- Total Vacancies
- 933 Posts (IAS, IPS, IFS & other Group A/B services)
- Post Name
- UPSC Civil Services Preliminary Examination (CSE Prelims) 2026
- Exam / Result Date
- 24 May 2026 (Sunday)
- Application Last Date
- 24 February 2026
- Application Start Date
- 04 February 2026
- Conducting Body
- Union Public Service Commission (UPSC)
- Eligibility
- Any Graduate
Quick Summary
UPSC Prelims Answer Key 2026 (Unofficial) for GS Paper 1 and CSAT is now available. The Civil Services Preliminary Examination was conducted on 24 May 2026. Download Set A, B, C, D wise solutions PDF from top coaching institutes at upsc.gov.in for official key.
UPSC Prelims Answer Key 2026 – Overview
The exam window for UPSC Prelims 2026 has closed — both GS Paper 1 (09:30–11:30 AM) and CSAT Paper 2 (14:30–16:30 PM) were successfully conducted on 24 May 2026 (Sunday) across 83 examination centres nationwide. Unofficial answer keys for both papers have been released by leading coaching institutes within hours of each paper ending. The Union Public Service Commission (UPSC) has announced a landmark reform for 2026: for the first time in UPSC history, the Commission will publish an official provisional answer key through its QPRep portal, and candidates will be able to raise objections against disputed answers. The official provisional key is expected shortly after the examination; the unofficial answer keys — covering Set A, Set B, Set C, and Set D — prepared by coaching institutes on a memory-based and expert-analysis basis, are already live for immediate score estimation. GS Paper 1 carries 200 marks (100 questions × 2 marks each); CSAT carries 200 marks but is qualifying only (minimum 33% = 66 marks required). Official portal: upsc.gov.in.
| Detail | Information |
|---|---|
| Conducting Body | Union Public Service Commission (UPSC) |
| Exam Name | UPSC Civil Services Preliminary Examination (CSE Prelims) 2026 |
| Exam Date | 24 May 2026 (Sunday) |
| GS Paper 1 (Shift 1) | 09:30 AM – 11:30 AM |
| CSAT Paper 2 (Shift 2) | 14:30 PM – 16:30 PM |
| Exam Centres | 83 cities across India |
| Total Vacancies (CSE 2026) | 933 Posts (IAS, IPS, IFS & other Group A/B services) |
| GS Paper 1 – Questions & Marks | 100 MCQs | 200 Marks | 2 Hours |
| CSAT Paper 2 – Questions & Marks | 80 MCQs | 200 Marks | 2 Hours (Qualifying: 33% = 66 marks) |
| Marking Scheme | +2 per correct answer | −0.67 (1/3 of 2) per wrong answer |
| Paper Sets | Set A, Set B, Set C, Set D |
| Unofficial Answer Key Status | Released – PW, StudyIQ, Vajiram & Ravi, VisionIAS, Legacy IAS, others |
| Official Provisional Answer Key | To be released on QPRep portal – upsc.gov.in |
| Objection Window | Expected till 31 May 2026 (verify at upsc.gov.in) |
| UPSC Mains 2026 Date | 21 August 2026 |
| Official Website | upsc.gov.in |
Source: Union Public Service Commission (UPSC) official notification | upsc.gov.in | Exam conducted 24 May 2026
UPSC Prelims 2026 – Important Dates & Exam Schedule
All key dates from application through the Mains stage of UPSC CSE 2026 are confirmed below. The official provisional answer key release date is pending; the objection window is reportedly open until 31 May 2026.
| Event | Date |
|---|---|
| UPSC CSE 2026 Notification Released | 04 February 2026 |
| Application Start Date | 04 February 2026 |
| Application Last Date | 24 February 2026 |
| Admit Card Released | 15 May 2026 |
| UPSC Prelims 2026 Exam Date (GS Paper 1 + CSAT) | 24 May 2026 (Sunday) |
| Unofficial Answer Key Released (Coaching Institutes) | 24 May 2026 (within hours of exam) |
| Official Provisional Answer Key (UPSC QPRep Portal) | To be announced – check upsc.gov.in |
| Objection Window (against provisional key) | Expected till 31 May 2026 – verify at upsc.gov.in |
| UPSC Prelims 2026 Result Date | To be announced – check upsc.gov.in |
| UPSC Mains 2026 Exam Date | 21 August 2026 |
Source: UPSC official notification 2026 | upsc.gov.in
UPSC Prelims 2026 – Exam Pattern & Marking Scheme
UPSC Prelims 2026 comprises two objective papers held on the same day. GS Paper 1 is the decisive paper — marks obtained here determine Prelims qualification. CSAT (Paper 2) is qualifying only; candidates must score at least 33% (66 out of 200) for their GS Paper 1 marks to be counted.
| Paper | Subject | Questions | Total Marks | Duration | Nature |
|---|---|---|---|---|---|
| Paper 1 | General Studies (GS Paper 1) | 100 | 200 | 2 Hours | Merit-based (decisive) |
| Paper 2 | CSAT (General Studies Paper 2) | 80 | 200 | 2 Hours | Qualifying (min. 33% = 66 marks) |
| Answer Type | Marks |
|---|---|
| Correct Answer | +2 marks |
| Wrong Answer | −0.67 marks (1/3 of 2 marks) |
| Unattempted Question | 0 marks |
Source: UPSC CSE 2026 notification | upsc.gov.in
UPSC Prelims 2026 GS Paper 1 – Subject-wise Analysis & Difficulty Level
UPSC Prelims 2026 GS Paper 1 was overall Moderate to Difficult as per initial expert analysis and student feedback. The paper was notably history-heavy and included — for the first time — questions from Ethics and Integrity in GS Paper 1. Questions across most subjects were conceptual, application-based, and statement-heavy rather than straightforward factual recall.
| Subject | Approx. No. of Questions | Difficulty Level | Key Observations (2026) |
|---|---|---|---|
| History, Art & Culture | ~18–22 | Difficult | Obscure areas – ancient river names, Tamilakam dynasties, Carnatic-Hindustani raga equivalence, Bagh Caves painting, ancient textual references |
| Environment & Ecology | ~12–15 | Moderate to Difficult | Beyond common themes – included species, geoparks, REDD+, climate reports, mangroves, specific protected-area facts |
| Indian Polity & Governance | ~12–15 | Moderate | Moved beyond standard Articles – tested disability law, governance reforms, application-based polity |
| Economy | ~10–12 | Moderate to Difficult | Mixed basic concepts with current developments – CBDC, real-world asset tokenisation, M1xchange, Financial Inclusion Index, sustainability bonds, rare earth elements |
| Geography (India & World) | ~10–12 | Moderate | Moderate representation; conceptual and map-based questions |
| Science & Technology | ~10–12 | Moderate to Difficult | Current-heavy – blockchain, LLMs, quantum mission, GenomeIndia, stealth technology, green hydrogen, drone swarms, Deep Ocean Mission |
| Current Affairs (National & International) | ~8–10 | Moderate | Integrated with static subjects; required analytical understanding of recent policy and events |
| Ethics & Integrity (NEW in GS-1) | ~2–3 | Moderate | First-ever appearance of Ethics questions in GS Paper 1 – marks a new trend shift |
Source: Expert analysis by coaching institutes | Exam conducted 24 May 2026 | upsc.gov.in
UPSC Prelims 2026 CSAT – Difficulty Level
CSAT Paper 2 (Shift 2, 14:30–16:30 PM) was rated Moderate to Difficult by students and subject experts. Several questions required strong comprehension and analytical abilities. Assertion-reason and statement-based questions were prominently seen. The paper was also noted as lengthy and time-consuming. CSAT remains qualifying in nature — candidates must score a minimum of 33% (66 out of 200) for their GS Paper 1 marks to be evaluated.
UPSC Prelims 2026 – Expected Cutoff (Category-wise)
The official cutoff for UPSC Prelims 2026 will be announced alongside the Prelims result on upsc.gov.in. Based on expert analysis of paper difficulty, vacancy count (933 posts), and historical trends, the expected cutoff ranges below are drawn from multiple coaching institute estimates released on 24 May 2026. These are indicative — the actual cutoff may vary.
| Category | Expected Cutoff 2026 (out of 200) | UPSC Prelims Official Cutoff 2025 | UPSC Prelims Official Cutoff 2024 |
|---|---|---|---|
| General (UR) | 85–100 marks | ~88 marks | ~100 marks |
| OBC | 82–91 marks | ~86 marks | ~98 marks |
| SC | 74–85 marks | ~75 marks | ~85 marks |
| ST | 70–83 marks | ~72 marks | ~82 marks |
| PwBD (applicable categories) | As per UPSC norms | As per UPSC norms | As per UPSC norms |
| CSAT Qualifying Threshold | 66 marks (33% of 200) – all categories | 66 marks | 66 marks |
UPSC Prelims Answer Key 2026 – Coaching Institute-wise Set A B C D PDF Links
Leading UPSC coaching institutes have released their unofficial answer keys for GS Paper 1 and CSAT Paper 2 within hours of the exam on 24 May 2026. These are memory-based and expert-prepared solutions covering all four sets (A, B, C, D). Coaching institute keys may differ on 2–5 disputed questions; rely on the official UPSC provisional key (to be released at upsc.gov.in) for the authoritative answers.
| Coaching Institute | GS Paper 1 Answer Key (Unofficial) | CSAT Paper 2 Answer Key (Unofficial) | Sets Covered |
|---|---|---|---|
| PW (Physics Wallah / PW Only IAS) | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D | Hindi & English |
| StudyIQ IAS | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D |
| Vajiram & Ravi | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D | Exam Analysis at 5:00 PM |
| VisionIAS | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D | Subject-wise analysis |
| Legacy IAS | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D |
| Dalvoy | GS Paper 1 – Set Wise Solutions | CSAT – Set Wise Solutions | Set A, B, C, D | Score calculator + live updates |
| PrepAiro (AI-verified) | GS Paper 1 – Set Wise Answer Key | CSAT – Set Wise Answer Key | Set A, B, C, D | AI-verified | Score calculator |
| LotusArise IAS | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D | Paper trend analysis |
| Prepp.in | GS Paper 1 – Download PDF | CSAT – Download PDF | Set A, B, C, D | Detailed solutions |
Note: All answer keys above are unofficial, prepared by respective coaching institutes based on memory-based questions and expert analysis. The official provisional answer key will be released by UPSC at upsc.gov.in.
How to Download UPSC Prelims Answer Key 2026 – Step by Step
Candidates who appeared for UPSC Prelims 2026 can follow these steps to access both the unofficial answer keys (available now) and the official provisional answer key (to be released at upsc.gov.in via QPRep portal).
For Unofficial Answer Key (Available Now – Coaching Institutes)
- Check the booklet series — Set A, Set B, Set C, or Set D — printed on the front cover of your question paper booklet. This is essential to match your answers correctly.
- Visit the coaching institute's website of your choice from the table above (PW, StudyIQ, Vajiram & Ravi, VisionIAS, Legacy IAS, Dalvoy, PrepAiro, LotusArise, Prepp.in).
- Look for the UPSC Prelims Answer Key 2026 article or section on the website. Click on the GS Paper 1 or CSAT tab as required.
- Select your Set (A/B/C/D) from the answer key page. Compare your marked responses with the provided solutions question by question.
- Calculate your estimated score using the formula: Score = (+2 × Correct answers) − (0.67 × Wrong answers). Do not include unattempted questions in the calculation.
- Download and save the PDF for future reference. Note that coaching institute keys may differ on 2–5 disputed questions.
For Official Provisional Answer Key (UPSC QPRep Portal)
- Visit the official UPSC website at upsc.gov.in once the provisional answer key is released.
- Navigate to the Examinations section and look for Civil Services (Preliminary) Examination 2026 Answer Key.
- Click on the answer key link to open the QPRep portal or the direct PDF. Log in if required.
- Download the set-wise official provisional answer key PDF for GS Paper 1 and CSAT Paper 2 separately.
- If you wish to raise an objection against any answer, collect supporting references (NCERT, official reports, expert citations) and submit through the QPRep objection portal before the deadline.
How to Raise Objection for UPSC Prelims 2026 Answer Key
For the first time in UPSC history, the Commission will allow candidates to raise objections against the provisional answer key for UPSC Prelims 2026 through its QPRep portal. This reform significantly changes the answer key process — previously, coaching institutes were the only reference; now candidates get an official channel to challenge disputed answers.
- Visit the UPSC official website at upsc.gov.in and navigate to the QPRep portal link once the provisional answer key is published.
- Log in using your registration credentials from the CSE 2026 application.
- Identify the question number and set (A/B/C/D) for which you wish to raise an objection.
- Prepare supporting evidence for your objection — NCERT textbook references, official government reports, expert opinion sources, or other credible citations that back the alternate answer.
- Submit the objection through the QPRep portal with all supporting material. Objections without credible evidence are unlikely to be accepted by UPSC.
- Note the objection submission deadline. The objection window is expected to close on 31 May 2026 — verify the exact deadline at upsc.gov.in before submitting.
UPSC Prelims 2026 – Official Links & Resources
| Resource | Link |
|---|---|
| Official UPSC Website | upsc.gov.in |
| UPSC Online Portal (Applications & Admit Card) | upsconline.nic.in |
| Official UPSC Provisional Answer Key (QPRep Portal) | To be released – upsc.gov.in |
| UPSC CSE 2026 Official Notification PDF | upsc.gov.in – Examinations section |
| UPSC CSE Vacancy 2026 Detail (cseplus.dopt.gov.in) | cseplus.dopt.gov.in |
Source: Union Public Service Commission | upsc.gov.in | All official links verified as of 24 May 2026.
UPSC Prelims Answer Key 2026 – Frequently Asked Questions
Is the UPSC Prelims 2026 Answer Key released officially? +
The official UPSC Prelims 2026 Answer Key has not yet been released. However, in a landmark reform, UPSC will release an official provisional answer key for CSE Prelims 2026 through the QPRep portal on upsc.gov.in — something it has never done before. Previously, only coaching institutes released unofficial answer keys. Candidates will be able to view the provisional key and raise objections within the allowed window (expected till 31 May 2026). The unofficial answer keys prepared by PW, StudyIQ, Vajiram & Ravi, VisionIAS, and other coaching institutes are available today, 24 May 2026.
How do I calculate my UPSC Prelims 2026 score from the answer key? +
Use this formula to calculate your GS Paper 1 estimated score: Score = (+2 × Correct answers) − (0.67 × Wrong answers). Each correct answer in GS Paper 1 earns +2 marks; each wrong answer deducts 0.67 marks (one-third of 2). Unattempted questions carry zero marks and should not be included in the calculation. The same formula applies to CSAT Paper 2. For CSAT, you only need 66 out of 200 to qualify (33%). Coaching institute score calculators on Dalvoy, PrepAiro, and PW's website can also help you estimate quickly.
What is the expected cutoff for UPSC Prelims 2026 for General category? +
Based on the overall Moderate to Difficult difficulty level of UPSC Prelims 2026 GS Paper 1 and inputs from multiple coaching institute experts, the expected cutoff for the General (Unreserved) category is estimated to be in the range of 85 to 100 marks out of 200. The paper being tougher than 2024 — especially in History, Environment, and Science & Technology — may keep the cutoff lower than 2024's peak of around 100 marks. OBC cutoff is estimated at 82–91 marks, SC at 74–85 marks, and ST at 70–83 marks. The official cutoff will be declared by UPSC only alongside the Prelims result at upsc.gov.in.
Which coaching institute answer key is most accurate for UPSC Prelims 2026? +
All major coaching institutes — PW, StudyIQ, Vajiram & Ravi, VisionIAS, Legacy IAS, Dalvoy, PrepAiro, LotusArise, and Prepp.in — release answer keys for UPSC Prelims based on memory-based questions and expert analysis. Coaching institute keys typically agree on 95–97 out of 100 questions; differences arise on 2–5 genuinely disputed questions. No single institute's key is universally "most accurate." For disputed questions, cross-check across 2–3 institutes and wait for UPSC's official provisional answer key on upsc.gov.in — that is the authoritative source.
What was the difficulty level of UPSC Prelims 2026 GS Paper 1? +
UPSC Prelims 2026 GS Paper 1 was rated Moderate to Difficult by coaching institute experts and students. The paper was notably history-heavy, with questions on obscure ancient history, Tamilakam dynasties, and art history. Environment & Polity each had 12–15 questions, with Science & Technology being current-heavy (blockchain, LLMs, quantum mission, drone swarms, Deep Ocean Mission). In a first for UPSC, 2–3 questions from Ethics & Integrity appeared in GS Paper 1. Questions were largely conceptual and analytical rather than direct factual recall. CSAT (Paper 2) was also rated Moderate to Difficult, with lengthy comprehension passages and time-consuming reasoning problems.
How to raise objection against UPSC Prelims 2026 Answer Key? +
For the first time, UPSC will allow official objections to the CSE Prelims 2026 provisional answer key through the QPRep portal at upsc.gov.in. Once the provisional key is published, log in to the QPRep portal with your registration credentials, identify the question and set (A/B/C/D) you wish to contest, and submit your objection with supporting evidence (NCERT references, official reports, expert sources). The objection window is expected to remain open until 31 May 2026 — verify the exact date at upsc.gov.in before submitting.
