AI summary
Official answer key for Prelims GS Paper 1 and CSAT Paper 2 was released on June 12, 2026 at opsc.gov.in. The objection window was open until June 22, 2026 with a fee of approximately INR 50 per question challenged.
Source: freejobalert.com. Shishya does not list this site as the conducting body's own site — always verify dates on the official exam portal.