ChatGPT parent OpenAI will open its first India office in New Delhi later this year, deepening its push in its second-largest market by user numbers. India is a critical market for ChatGPT, where it launched its cheapest yet monthly plan at $4.60 just this week, targeting the nearly one billion internet users in the world's most populous nation. The company faces strong competition in India from rivals like Google's Gemini and AI startup Perplexity, both of which have launched offerings that make their advanced plans free for many users in the market. NDTV World's Vishal Vivek reports.