01.What OpenAI actually said
India is now ChatGPT's largest market in the world by weekly active users, according to Prabhjeet Singh, managing director of OpenAI India, in his first media interview since joining the company in August. He told The Economic Times that the local user base has doubled since January this year, and that the growth reflects people finding more uses for the chatbot rather than simply signing up.
The claim is a step beyond what OpenAI has said before. In February 2026 the company said India had more than 100 million weekly ChatGPT users, and chief executive Sam Altman had described India as its fastest-growing market and second-largest by users. The new number moves India to the top on weekly actives, though OpenAI has not published an India-specific figure for this milestone, and the ranking is by weekly active users, not by paying subscribers or revenue.
02.Why India, and what is being built here
Singh's explanation is unglamorous: relevance. People are putting the tool into everyday workflows, which is why usage keeps compounding instead of flattening after the novelty. To reach users outside the big cities, OpenAI says it is expanding ChatGPT's Indian-language capabilities and building Android-first, since that is where most of the country's next hundred million users will arrive.
The company is also putting infrastructure here. OpenAI announced its first India office in Delhi NCR in August 2025, and at the India AI Impact Summit in February 2026 it set out plans for Mumbai and Bengaluru offices along with OpenAI for India. Its partnership with TCS's HyperVault data centre business starts at 100 megawatts of capacity and can scale to 1 gigawatt, which is aimed squarely at enterprise data residency and security requirements. OpenAI models are also available through Amazon Bedrock for local inference, keeping processing inside the country.
03.The part Indian businesses should read twice: ads
OpenAI is expanding advertising on ChatGPT in India, which Singh framed as a way to keep free and lower-priced access alive alongside paid subscriptions. His two commitments are that advertisers will not get access to users' personal information, and that advertising will not influence ChatGPT's responses.
The mechanics run through Razorpay. Under the partnership, Razorpay's growth marketing platform Engage helps brands build product catalogues, launch and manage campaigns, and measure performance. Early participating brands include Tanishq, Fastrack, Traya, Tata Neu, Rivaah by Tanishq, Shaadi.com, Axis Max Life, Palmonas and Narsee Monjee Institute of Management Studies.
For a small Indian brand, that combination of signals matters more than the brand list. If there is no personal-data targeting, the work shifts to things you fully control: accurate catalogues and pricing, a clear product description, and a way to measure what a conversation actually produced. That is closer to sponsored search listings than to social advertising, and it rewards businesses that keep their product data clean.
04.From pilots to production, and Codex outside the metros
Singh said enterprises, global capability centres and startups are moving past pilots and demos into production deployments, naming JioHotstar and Cars24 as examples. He also said India is among Codex's largest and fastest-growing markets, with notable developer use coming from tier-II cities rather than only Bengaluru, Hyderabad and Pune.
Two other threads are worth noting. OpenAI is expected to make announcements on UPI and payments in the coming weeks, which would matter for any Indian business that wants a transaction to finish inside the chat rather than at a link. And on regulation, Singh said the company is engaging with government agencies, banks and financial institutions on protecting critical infrastructure from misuse of autonomous AI agents, and he backed clear AI rules as a way to build confidence among consumers, enterprises and developers.
05.What to do with this, calmly
For students and professionals, the useful takeaway is that access is no longer the advantage. If the largest ChatGPT market in the world is India, then everyone in your batch has the same chatbot. What separates people now is the depth of the workflow they build around it: a repeatable way to check numbers, draft in their own voice, and verify sources before anything goes out.
For businesses, watch the advertising product rather than the headline. Catalogue quality, measurement and honest product claims are the levers, and the Razorpay tie-up suggests the campaign plumbing will look familiar to anyone who has run marketplace ads. For builders selling into banks, hospitals or government, the HyperVault capacity and Bedrock inference inside India are the details that decide whether a deal clears procurement.
A last note on numbers. The market-share and user figures here come from company statements reported in the press, not from audited disclosures, and OpenAI does not break out India revenue. Treat the direction as well-supported and the precise magnitude as the company's own claim.
Frequently asked questions
Is India really ChatGPT's largest market now?
That is what OpenAI India managing director Prabhjeet Singh told The Economic Times in November 2026, measured by weekly active users, with the local user base doubling since January. OpenAI has not published an India-specific user number for this milestone, and the ranking is by weekly actives rather than paying users or revenue.
Can Indian brands advertise on ChatGPT today?
OpenAI is expanding advertising in India, and Razorpay's Engage platform is handling catalogues, campaign management and measurement for brands. Singh said early participants include Tanishq, Fastrack, Tata Neu, Shaadi.com and Axis Max Life, and that advertisers will not receive users' personal information.
Where does OpenAI process data for Indian customers?
OpenAI's partnership with TCS HyperVault starts at 100 MW of data centre capacity with room to scale to 1 GW, aimed at enterprise data residency, and OpenAI models are also available through Amazon Bedrock for inference inside India.