New Delhi, May 12 -- Indian IT stocks witnessed heavy selling pressure on Tuesday, 12 May after OpenAI unveiled a massive new AI-focused venture aimed at helping enterprises deploy artificial intelligence systems at scale, raising concerns over the future growth prospects of traditional IT service providers.

The Nifty IT index plunged 3.3% to the day's low of 28,351 during early trade, making it one of the worst-hit sectoral indices on Dalal Street.

Among frontline technology stocks, Persistent Systems dropped 4.25%, while Tata Consultancy Services declined 3.9%, Infosys fell 3.7% and Coforge slipped 3.23%.

Other major IT counters also remained under pressure. HCL Tech, Tech Mahindra, L&T Tech, LTIMindtree Wipro, and Mphasis also lost ...