ChatGPT's 100-million-user milestone is a well-documented 2023 event, not new July 2026 news: the item behind this entry is a SpaceDaily retrospective published today that restates a January 2023 statistic without any fresh reporting attached. Readers encountering this as "news" should understand it as a historical explainer, and the more relevant current data point is that ChatGPT has since scaled to roughly 1 billion monthly active users.
What happened
According to a UBS analyst note reported by Reuters on February 1, 2023, ChatGPT reached 100 million monthly users in January 2023, about two months after OpenAI released it as a free research preview on November 30, 2022. Reuters reported the UBS note relied on analytics firm Similarweb, which estimated roughly 13 million daily unique visitors that January. UBS analysts wrote they "cannot recall a faster ramp in a consumer internet app" in 20 years of covering the sector, a line widely echoed by outlets including The Guardian. The comparison cited by UBS and repeated in retrospectives: TikTok took about nine months and Instagram more than two years to reach the same 100-million threshold.
Timeline
- •November 30, 2022: OpenAI released ChatGPT publicly as a free research preview, built on GPT-3.5.
- •January 2023: ChatGPT crossed 100 million monthly users, roughly 60 days after launch, per UBS/Similarweb data reported by Reuters.
- •May 2026: ChatGPT reached approximately 1 billion monthly active users, per Sensor Tower's State of AI 2026 report, the fastest any app has hit that scale.
For practitioners
The original 2023 episode remains a useful case study in scaling consumer AI products: rapid adoption pushed OpenAI toward tiered access and paid subscriptions to manage inference costs, and forced faster iteration on safety and moderation systems. Teams building consumer-facing LLM products still watch the same signals UBS and Similarweb tracked then - daily/monthly active user ratios, retention versus viral spikes, and cost per query - when assessing whether early growth is durable.
What to watch
The more current signal for 2026 is ChatGPT's continued scale: Sensor Tower's report places it at about 1 billion monthly active users as of May 2026, with rivals like Anthropic's Claude showing fast year-over-year growth in usage share. Coverage resurfacing the original 2023 milestone (as this SpaceDaily piece does) should be read as retrospective framing rather than a new event; the figure is single-sourced to that 2023 UBS note and Similarweb's methodology, which analysts have not treated as an official OpenAI disclosure.
Key Points
- 1ChatGPT hit 100 million monthly users in January 2023, roughly 60 days after its November 2022 launch, per UBS analyst data cited by Reuters.
- 2A July 2026 SpaceDaily retrospective resurfaces this 2023 figure with no new development, so it reads as historical recap rather than fresh news.
- 3Sensor Tower reports ChatGPT has since reached 1 billion monthly active users by May 2026, dwarfing the original 60-day milestone.
Scoring Rationale
This is a July 2026 retrospective recirculating a well-known January 2023 statistic (ChatGPT's 100-million-user, 60-day milestone) with no new development attached, so it carries little current news value despite the historic significance of the original event. Scored as a minor/marginal item per staleness guidance, while noting ChatGPT's since-confirmed 1-billion MAU milestone (May 2026) as the more relevant current context.
Sources
Public references used for this report.
Practice with real Ad Tech data
90 SQL & Python problems · 15 industry datasets
250 free problems · No credit card
See all Ad Tech problems
