In under 6 months, ChatGPT doubled its weekly active users in under 6 months.
(And the reason why is fascinating.)
It took ChatGPT 9 months to grow from 100M to 200M weekly active users.
But this time?
It doubled that number in less than 6 months.
What changed?
New releases.
GPT-4o launch → A surge in usage from April to May 2024.
Advanced Voice Mode → Another growth spike in July & August.
o1 model series → Increased adoption in September & October.
Each major release → More users. More engagement.
Mobile adoption is skyrocketing, too.
175M users (out of 400M) now access ChatGPT on their phones.
And the mobile user base is growing 5-15% every month.
Meanwhile, rivals like DeepSeek are making moves, capturing 15% of ChatGPT’s mobile user base in February.
But ChatGPT still holds the #1 spot for both monthly web visits & mobile users.
The lesson?
Innovation fuels growth.
Better models → More users → More engagement.