A data roundup of how many people use OpenAI’s products, how fast the company is growing, what it earns and builds, and what it means for brands that want ChatGPT to name them. Every figure comes from OpenAI’s own posts and pages.
OpenAI says more than 1.2 billion people use ChatGPT each week, up from 800 million+ at DevDay 2025 and more than 1 billion in August 2026. Its CFO put annualized revenue at more than $20 billion in 2025, up from $6 billion in 2024 and $2 billion in 2023, and OpenAI raised $110 billion at a $730 billion pre-money valuation in February 2026. Codex passed 5 million weekly users in June. If your buyers ask ChatGPT for recommendations, these are the numbers behind tracking it with AI visibility tools such as Mentionova, our top pick. For a ChatGPT-only view, see our ChatGPT statistics.
Key takeaways
- 1.2 billion+ weekly ChatGPT users as of October 7, 2026 (OpenAI)
- $20 billion+ annualized revenue in 2025, from $2 billion in 2023 (OpenAI CFO)
- $110 billion raised at a $730 billion pre-money valuation (OpenAI)
- 1 million+ business customers and 7 million+ ChatGPT for Work seats by November 2025 (OpenAI)
- 5 million+ weekly Codex users in June 2026, up 6x since February (OpenAI)
- $1 billion annualized run rate for ChatGPT Ads in under 200 days (OpenAI)
- OpenAI says ads do not influence the answers ChatGPT gives, so organic mentions are a separate thing to track
How many people use ChatGPT?
- More than 1.2 billion people use ChatGPT each week, per OpenAI’s GPT-6 launch post (OpenAI, Oct 7, 2026).
- “Our collective 1.2B weekly users” is how OpenAI described ChatGPT’s audience at DevDay on September 29, 2026 (OpenAI DevDay recap, Sep 29, 2026).
- More than 1 billion weekly active users as of August 31, 2026 (OpenAI on ChatGPT ads, Aug 31, 2026).
- 900 million+ weekly active users and 50 million+ consumer subscribers on February 27, 2026 (OpenAI funding post, Feb 27, 2026).
- 800 million+ weekly ChatGPT users, as OpenAI stated in December 2025 (OpenAI, State of enterprise AI, Dec 8, 2025).
- 800 million+ weekly users on OpenAI’s DevDay 2025 page, with 4 million developers and 6 billion API tokens per minute (OpenAI DevDay 2025 page).
- 700 million weekly users at the time of OpenAI’s September 2025 usage study (OpenAI, How people use ChatGPT, Sep 15, 2025).
- About 50% more weekly users in ten months: from 800 million+ (OpenAI, December 2025) to 1.2 billion+ (October 2026) (our arithmetic from OpenAI’s figures) (OpenAI, Oct 7, 2026).
How do people use ChatGPT?
- 49% of messages are “Asking”, 40% “Doing” and 11% “Expressing” in OpenAI’s analysis of 1.5 million conversations (OpenAI, How people use ChatGPT, Sep 15, 2025).
- About 70% of consumer messages are non-work and about 30% work-related in the same study (OpenAI, How people use ChatGPT, Sep 15, 2025).
- 37% to 52%: the share of ChatGPT users with typically feminine first names rose from 37% (January 2024) to 52% (July 2025) (OpenAI, How people use ChatGPT, Sep 15, 2025).
- 50% more messages a day: six months after signup, users send more and have doubled the number of distinct tasks they try (OpenAI Signals, Jun 30, 2026).
- Non-English users are over half of active users, led by Spanish, Portuguese and Arabic, with the fastest relative growth in Africa and Asia (OpenAI Signals, Jun 30, 2026).
How much revenue, funding and compute does OpenAI have?
- Annualized revenue (ARR) was $2 billion in 2023, $6 billion in 2024 and more than $20 billion in 2025, per OpenAI’s CFO (OpenAI CFO post, Jan 18, 2026).
- Compute grew from 0.2 GW (2023) to 0.6 GW (2024) to about 1.9 GW (2025) (OpenAI CFO post, Jan 18, 2026).
- Both revenue and compute roughly tripled each year, 3x from 2023 to 2024 and a bit over 3x to 2025 (our arithmetic) (OpenAI CFO post, Jan 18, 2026).
- OpenAI raised $110 billion at a $730 billion pre-money valuation: $30B from SoftBank, $30B from NVIDIA and $50B from Amazon (OpenAI funding post, Feb 27, 2026).
- OpenAI plans 3 GW of dedicated inference and 2 GW of training on Vera Rubin systems with NVIDIA (OpenAI funding post, Feb 27, 2026).
- Stargate was announced in January 2025 as $500 billion over four years, with $100 billion deployed immediately (OpenAI Stargate announcement, Jan 21, 2025).
- OpenAI says it has surpassed its 10 GW U.S. Stargate goal (due by 2029), with more than 3 GW added in the last 90 days (OpenAI Stargate update, Apr 29, 2026).
- GPT-5.5 was trained at the Stargate site in Abilene, Texas, which runs on Oracle Cloud Infrastructure and NVIDIA GB200 systems (OpenAI Stargate update, Apr 29, 2026).
How many businesses use OpenAI?
- More than 1 million business customers pay OpenAI, through ChatGPT for Work or the developer platform (November 2025) (OpenAI, 1 million business customers, Nov 5, 2025).
- More than 7 million ChatGPT for Work seats, up 40% in two months, with ChatGPT Enterprise seats up 9x year over year (OpenAI, 1 million business customers, Nov 5, 2025).
- More than 9 million paying business users as of February 2026 (OpenAI funding post, Feb 27, 2026).
- Weekly ChatGPT Enterprise messages grew about 8x in a year and the average worker sends 30% more messages (OpenAI, State of enterprise AI, Dec 8, 2025).
- Use of Projects and Custom GPTs rose 19x year to date in 2025 (OpenAI, State of enterprise AI, Dec 8, 2025).
- 75% of surveyed workers say AI improved the speed or quality of their output, and they report saving 40 to 60 minutes a day (OpenAI, State of enterprise AI, Dec 8, 2025).
- OpenAI’s enterprise survey covered 9,000 workers across almost 100 enterprises (OpenAI, State of enterprise AI, Dec 8, 2025).
How many people use Codex?
- Weekly Codex users more than tripled from the start of 2026 to 1.6 million by February 27 (OpenAI funding post, Feb 27, 2026).
- Codex went from more than 3 million weekly developers in early April to more than 4 million two weeks later (OpenAI Codex enterprise post, Apr 21, 2026).
- Codex passed 5 million weekly active users by June 2, up more than 6x since the February desktop app launch (OpenAI Codex for knowledge work, Jun 2, 2026).
- Knowledge workers are about 20% of Codex users and are growing more than three times as fast as developers (OpenAI Codex for knowledge work, Jun 2, 2026).
- 4 million developers had built with OpenAI by DevDay 2025, and the API processed 6 billion tokens a minute (OpenAI DevDay 2025 page).
What is happening with ChatGPT ads and models?
- ChatGPT Ads hit a $1 billion annualized run rate in under 200 days (OpenAI on ChatGPT ads, Aug 31, 2026).
- Tens of thousands of advertisers in 40+ countries, with 50+ technology and measurement partners (OpenAI on ChatGPT ads, Aug 31, 2026).
- Ads are labeled, and OpenAI says “Advertising does not influence the answers ChatGPT provides” (OpenAI on ChatGPT ads, Aug 31, 2026).
- An ecommerce advertiser reported 3x ROAS over 28 days, and a partner reported 80%+ of ad-driven traffic came from new customers (advertiser and partner claims, per OpenAI) (OpenAI on ChatGPT ads, Aug 31, 2026).
- GPT-6 Sol serves Plus, Pro, Business and Enterprise; GPT-6 Luna serves Free and Go (OpenAI, Oct 7, 2026).
- GPT-6 Instant starts answering 44% sooner on web-search questions than GPT-5.6 Instant (OpenAI, Oct 7, 2026).
- DevDay 2026 had 20+ major announcements, including an OpenAI Marketplace with 32 first partners, plan allowances usable across 16 partners through Sign in with ChatGPT and a Pro 500 plan with 25x the Plus allowance (OpenAI DevDay recap, Sep 29, 2026).
For more on how people use the chatbot itself, see our ChatGPT statistics. For the wider market, see AI search statistics, Gemini statistics and Google AI Overviews statistics.
What does this mean for AI visibility?
OpenAI’s own numbers say ChatGPT is a mass-market answer engine, a paid ad platform and a business tool all at once. For a brand, three things follow.
- Organic answers and ads are separate. OpenAI labels ads and says they do not influence the answers ChatGPT gives. Being named in an answer is still earned, so you have to measure it on its own. Mentionova tracks ChatGPT on every plan and covers six engines (ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews and Reddit) on Scale, with agents that draft the briefs and content that close the gaps. See Mentionova pricing and compare it with others in the best AI visibility tools.
- Track ChatGPT as its own engine. With 1.2 billion weekly users it is the largest single engine to watch, but not the only one. Our ChatGPT rank tracking tools roundup compares tools by how they track it, and Mentionova vs Profound shows how an enterprise option stacks up.
- Expect buyers to arrive through agents and apps. DevDay 2026 added a Marketplace, Sign in with ChatGPT and an Agents API. Treat answer engines as a channel, and see AI search statistics for the wider picture.
Frequently asked questions
How many people use ChatGPT?
More than 1.2 billion people use ChatGPT each week, per OpenAI’s October 7, 2026 GPT-6 post. OpenAI reported more than 1 billion weekly active users on August 31, 2026, 900 million+ in February 2026 and 800 million+ in late 2025.
How much revenue does OpenAI make?
OpenAI’s CFO stated annualized revenue of more than $20 billion in 2025, up from $6 billion in 2024 and $2 billion in 2023, in a January 2026 post. These are company-reported ARR figures, not audited financial statements; OpenAI is a private company.
How much funding has OpenAI raised?
OpenAI announced $110 billion of new investment at a $730 billion pre-money valuation on February 27, 2026: $30 billion from SoftBank, $30 billion from NVIDIA and $50 billion from Amazon, per OpenAI.
How many people use Codex?
Codex had more than 5 million weekly active users on June 2, 2026, up more than 6x since the February desktop app launch, per OpenAI. About 20% of users are knowledge workers rather than developers.
Does OpenAI run ads in ChatGPT?
Yes. ChatGPT Ads reached a $1 billion annualized run rate in under 200 days, with tens of thousands of advertisers in 40+ countries, per OpenAI. OpenAI says ads are labeled and do not influence the answers ChatGPT provides.
Should brands track their visibility in ChatGPT?
Yes, if your buyers research with AI. With more than 1.2 billion weekly users, ChatGPT is the biggest answer engine to watch. Track it as its own engine, because ChatGPT, Gemini and Perplexity can cite different sources. Tools such as Mentionova report each engine separately.
How we compiled these statistics
We fetched 14 OpenAI pages on October 26, 2026 and recorded 40 data points in docs/content/stats-ledgers/openai-statistics.json. Every numbered figure maps to a ledger row with the source URL and the OpenAI wording. We used only openai.com pages: no news coverage, market-research sites, traffic estimators or social posts. Figures are OpenAI’s own statements and are not independently audited; revenue figures are annualized run rates, not accounting revenue. Where we calculate something (a growth multiple), we say so. We left out claims that appeared only in third-party reports and not on an OpenAI page. Sources: OpenAI, GPT-6 for everyone, DevDay 2026 recap, ChatGPT ads, scaling AI for everyone, CFO letter, Stargate update, Stargate announcement, Codex enterprise, Codex for knowledge work, OpenAI Signals, How people use ChatGPT, 1 million business customers, state of enterprise AI and DevDay 2025.