UPSC Prelims 2026 Answer Key: Solutions, Cutoff & Score Calculator (PDF Download)
8 min read
Apr 19, 2026
UPSC Prelims 2026 Answer Key
Exam Date: May 25, 2026 (Sunday) Status: ⏳ Answer key will be updated within hours of the exam
PrepAiro will publish AI-verified, set-wise answer keys for both GS Paper 1 and CSAT Paper 2 — with detailed explanations, subject-wise breakdown, and a score calculator — within hours of the UPSC Prelims 2026 exam.
UPSC Prelims 2026 Answer Key — GS Paper 1
🔒 Coming on May 25, 2026 — immediately after the exam
We'll publish:
- ✅ Set A, B, C, D answer keys
- ✅ AI-verified solutions with explanations
- ✅ Subject-wise breakdown
- ✅ Downloadable PDF
| Q. No | Set A | Set B | Set C | Set D | Subject | Explanation |
|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | Updated on May 25 |
| 2 | — | — | — | — | — | Updated on May 25 |
| 3 | — | — | — | — | — | Updated on May 25 |
| ... | ... | ... | ... | ... | ... | ... |
| 100 | — | — | — | — | — | Updated on May 25 |
UPSC Prelims 2026 Answer Key — CSAT (Paper 2)
🔒 Coming on May 25, 2026
| Q. No | Set A | Set B | Set C | Set D | Topic | Explanation |
|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | Updated on May 25 |
| 2 | — | — | — | — | — | Updated on May 25 |
| ... | ... | ... | ... | ... | ... | ... |
| 80 | — | — | — | — | — | Updated on May 25 |
What's New: UPSC Provisional Answer Key 2026
For the first time in UPSC history, the Commission will release an official provisional answer key for CSE Prelims 2026. Here's what this means for you:
What Changed?
Previously, UPSC never released official answer keys. Candidates had to rely on coaching institutes, which often disagreed on 2–5 questions. Starting 2026, UPSC will publish a provisional key and allow objections.
Timeline
| Event | Expected Date |
|---|---|
| UPSC Prelims 2026 Exam | May 25, 2026 |
| PrepAiro Answer Key (AI-Verified) | May 25, 2026 (within hours) |
| Coaching Institute Answer Keys | May 25–26, 2026 |
| UPSC Provisional Answer Key | June 2026 (1–2 weeks post-exam) |
| Objection Window | 3–5 days after provisional key |
| UPSC Final Answer Key | Before results |
| Prelims Result | June–July 2026 |
How the Objection Process Works
- UPSC releases the provisional answer key on its official website
- Candidates can challenge answers by submitting evidence (NCERT references, expert opinions)
- UPSC reviews all objections
- Final answer key is published — this is used for marking
- Results are declared based on the final key
How PrepAiro's Answer Key Is Different
- Speed: Published within hours of the exam — before coaching institutes and UPSC
- AI-Verified: Cross-checked using AI with multiple authoritative sources
- Explanations: Detailed reasoning for every question, not just A/B/C/D
- Source Mapping: Each answer mapped to NCERT chapters and past PYQs
- Score Calculator: Built-in tool to estimate your score and compare with cutoff
UPSC Prelims 2026 Expected Cut Off
Based on the last 5 years of UPSC Prelims cutoff trends, here are the expected cutoffs for 2026:
| Category | Expected Cut Off (out of 200) | 2024 Actual | 2023 Actual | 2022 Actual |
|---|---|---|---|---|
| General | 95–105 | 98 | 85.00 | 86.66 |
| OBC | 90–100 | 92 | 78.33 | 79.99 |
| SC | 78–88 | 82 | 72.00 | 69.33 |
| ST | 72–82 | 77 | 65.00 | 63.33 |
| EWS | 88–98 | 90 | 77.33 | 79.99 |
| PwBD-1 | 65–75 | 68 | 55.67 | 55.33 |
| PwBD-2 | 55–65 | 57 | 48.67 | 49.33 |
| PwBD-3 | 48–58 | 53 | 42.33 | 41.33 |
Final expected cutoff will be updated after the exam based on actual difficulty analysis.
Cutoff Trends — What to Expect
The UPSC Prelims cutoff depends on three factors:
- Difficulty level of the paper
- Number of candidates who appeared
- Number of vacancies advertised
In 2024, the cutoff jumped significantly due to a relatively easier paper. If the 2026 paper follows the recent trend of moderate-to-tough difficulty, expect cutoffs in the range shown above.
UPSC Prelims 2026 Score Calculator
🔒 Coming May 25, 2026
After the exam, use our interactive score calculator:
- Enter your answers question-by-question
- Get your estimated score instantly
- See where you stand against expected cutoffs for your category
- Compare your performance across subjects
UPSC Prelims 2026 — Key Exam Details
| Detail | Info |
|---|---|
| Exam Name | UPSC Civil Services Preliminary Exam 2026 |
| Conducting Body | Union Public Service Commission (UPSC) |
| Exam Date | May 25, 2026 (Sunday) |
| Paper 1 — General Studies | 9:30 AM – 11:30 AM (2 hours, 100 questions) |
| Paper 2 — CSAT | 2:30 PM – 4:30 PM (2 hours, 80 questions) |
| Marking Scheme | +2 for correct, −0.67 for wrong (1/3 negative marking) |
| Total Marks | GS: 200, CSAT: 200 (CSAT is qualifying — 33% minimum) |
| Official Answer Key | Expected 1–2 weeks post-exam (first time ever) |
| Result Expected | June–July 2026 |
How to Use the Answer Key After the Exam
Step 1: Note Your Answers
During the exam, mark your answers on the question paper itself (not just the OMR sheet). This is your only record.
Step 2: Identify Your Set
Check your booklet series — Set A, B, C, or D — printed on the front page of your question paper.
Step 3: Match Your Answers
Use the set-wise answer key table above to check each answer.
Step 4: Calculate Your Score
Use this formula:
Score = (+2 × Correct Answers) − (0.67 × Wrong Answers)
Leave unattempted questions out of the calculation.
Step 5: Compare With Cutoff
Use our score calculator and cutoff table to see where you stand for your category.
Step 6: Don't Panic
Coaching institute answer keys can differ by 2–5 questions. Wait for UPSC's provisional key for the final picture. Start Mains preparation regardless if you're in the ballpark.
Subject-Wise Analysis — UPSC Prelims 2026
🔒 Detailed analysis coming May 25, 2026
Based on the last 5 years of UPSC Prelims trends, here's the expected subject-wise distribution:
| Subject | Expected Qs (2026) | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|---|
| History & Culture | 15–18 | 17 | 16 | 15 | 16 |
| Geography | 12–15 | 14 | 13 | 12 | 13 |
| Polity & Governance | 12–15 | 13 | 14 | 15 | 14 |
| Economy | 12–15 | 12 | 13 | 14 | 12 |
| Environment & Ecology | 10–14 | 12 | 11 | 10 | 12 |
| Science & Technology | 8–12 | 10 | 9 | 10 | 9 |
| Current Affairs | 15–20 | 18 | 17 | 16 | 17 |
| International Relations | 3–5 | 4 | 5 | 3 | 4 |
Actual 2026 distribution will be updated after the exam with full topic-wise breakdown.
Read our full Subject-Wise Weightage Analysis (2021–2025) →
Previous Year Answer Keys
Practice with past year answer keys and solutions:
Related Resources
- UPSC Prelims 2026 Test Series — Practice Mock Tests
- Subject-Wise PYQ Practice
- NCERT Notes for UPSC
- Daily Current Affairs
Frequently Asked Questions
When will the UPSC Prelims 2026 answer key be released?
PrepAiro will publish an AI-verified answer key within hours of the exam on May 25, 2026. UPSC's official provisional answer key is expected 1–2 weeks after the exam — this is the first year UPSC is releasing one.
Is UPSC releasing an official answer key for Prelims 2026?
Yes — for the first time ever. UPSC will release a provisional answer key and allow candidates to raise objections before finalizing. The final answer key will be used for marking and results.
How accurate are coaching institute answer keys?
Coaching institute answer keys typically differ from each other by 2–5 questions. PrepAiro uses AI cross-verification with NCERT, past papers, and multiple expert sources to minimise errors.
What is the expected cut off for UPSC Prelims 2026?
Based on recent trends, the General category cutoff is expected between 95–105 marks (out of 200). This depends on paper difficulty, number of candidates, and vacancies. We'll update with precise predictions after the exam.
How is the UPSC Prelims score calculated?
+2 marks for each correct answer, −0.67 marks for each wrong answer (1/3 negative marking). Unattempted questions carry no penalty. CSAT (Paper 2) is qualifying — you need a minimum of 33% (66 out of 200).
Should I start Mains preparation before the Prelims result?
Yes. If your estimated score is within or above the expected cutoff range for your category, start Mains preparation immediately. The gap between Prelims and Mains is short, and early starters have a significant advantage.
How many questions can I leave unattempted in UPSC Prelims?
There's no penalty for unattempted questions. The optimal strategy depends on your accuracy rate — if you're 60%+ confident in an answer, attempt it. Leaving 10–15 questions unattempted is common among successful candidates.
Will PrepAiro's answer key be available as a PDF?
Yes. A downloadable PDF with set-wise answer keys and explanations will be available on this page after the exam.
