UPSC Prelims 2026 Answer Key: UPSC Releases GS, CSAT Provisional Key, One Question Drops; Check Objection Raise Details

UPSC CSE 2026 Answer Key OUT: In a historic and unprecedented move, the Union Public Service Commission (UPSC) has officially released the provisional answer keys for the Civil Services (Preliminary) Examination 2026 today, May 27, 2026. This marks a fundamental shift in the commission's operational policy, as UPSC has traditionally withheld answer keys until the final results of the entire examination cycle were declared. The prompt release allows candidates who appeared for the high-stakes test on Sunday, May 24, 2026, to immediately verify their responses and calculate their estimated scores.

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The newly deployed provisional keys cover both General Studies Paper 1 and General Studies Paper 2 (CSAT). According to official commission data, a staggering 8,19,732 candidates registered for the examination across 2,072 specialised centers established in 83 cities nationwide. Out of the total registered pool, approximately 67 per cent, translating to nearly 5.49 lakh aspirants, actively turned up for the two-shift exam. This reflects a significant increase in attendance compared to the 2025 preliminary cycle, which recorded a 61 per cent turnout.

UPSC Prelims 2026 Provisional Answer Key: Highlights

A detailed statistical overview of the UPSC Civil Services Preliminary examination cycle and the current answer key release status is structured in the key metrics table below:

Steps to Download Official UPSC Prelims 2026 Answer Key PDF

Aspirants can access, view, and save the official paper solution sheets for all question booklet sets by executing the following operational browser steps:

Step 1: Visit the official central landing hub of the commission at upsc.gov.in.

Step 2: Navigate to the "What's New" section on the homepage or click on the dedicated "Answer Key" tab.

Step 3: Select the active links labeled "Civil Services (Preliminary) Examination 2026 – GS Paper I Answer Key" or "GS Paper II (CSAT) Answer Key".

Step 4: The server will automatically generate and display a consolidated PDF file containing the verified keys for Sets A, B, C, and D.

Step 5: Download the document and save a copy to match against your response sheet before the objection window closes.

One Question Dropped from General Studies Paper 1

Upon releasing the objective-type evaluation sheets, the commission revealed a significant correction: one question has been completely dropped from the General Studies Paper 1 scoring matrix. While the exact technical reason for this deletion has not been specified, the elimination means that the final raw scoring loop for GS Paper 1 will be calculated out of the remaining valid questions.

This modification changes the baseline calculation parameters for thousands of students racing against competitive cut-off margins. Subject matter experts will adjust the final scaling metrics proportionately across all sets to maintain evaluation fairness.

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UPSC CSE Online Objection Portal and Challenge Guidelines:

This 2026 session marks the first time that preliminary candidates are being granted an official avenue to challenge the commission's initial answer keys. A specialized online question paper representation portal has been activated on upsconline.nic.in to receive structural feedback.

Per the official guidelines, candidates have a strict 5-day window to register challenges. This window closes at 6:00 PM on May 31, 2026. Challengers must upload clear, authoritative supporting evidence, academic references, and written explanations to substantiate their claims. A panel of independent subject specialists will review all inputs before compiling the definitive final answer key.