ChatGPT Reaches 400 Million Weekly Active Users, Doubling Growth in Less Than 6 Months

400M users and counting: ChatGPT's growth shows no signs of slowing

OpenAI's flagship AI chatbot, ChatGPT, has seen significant user growth, doubling its weekly active users to 400 million in under six months, as reported by VC firm Andreessen Horowitz (A16z). This growth follows its initial rise from 100 million weekly active users in November 2023 to 200 million in August 2024. After its release in November 2022 as a research preview, ChatGPT quickly reached 100 million monthly active users within just two months. By November 2023, it achieved 100 million weekly active users, which escalated to 300 million by December 2024, and reached 400 million by February 2025. A16z notes that early consumer interest in ChatGPT was primarily driven by novelty, as users explored the app without a clear understanding of its practical applications. However, recent growth can be attributed to the launch of new models and features, specifically the introduction of GPT-4o, which incorporates multimodal capabilities. Following this launch, there was a notable surge in usage from April through May 2024. Further enhancements, including the Advanced Voice Mode and the o1 model series, contributed to increased user engagement, particularly from July to August and September to October 2024, respectively. On mobile platforms, ChatGPT's user base has been consistently increasing, with a month-over-month growth of 5% to 15%. Currently, 175 million of its total 400 million weekly active users access the app via mobile devices. The report also highlights competition from rivals such as DeepSeek, which attained the No. 2 position globally within ten days of its launch and captured 15% of ChatGPT's mobile user base by February 2025. Despite higher engagement rates among DeepSeek users compared to those using Perplexity and Claude, it still falls short of ChatGPT's user engagement levels. Additional insights from the market analysis include recommendations for AI development tools, rankings of the leading AI applications by category and revenue, as well as lists of the top generative AI applications across mobile and web platforms. ChatGPT ranks first in unique monthly visits on the web and in monthly active users on mobile, as indicated by data from Similarweb.

ChatGPT doubled its weekly active users in under 6 months, thanks to new releases | TechCrunch

OpenAI's flagship AI chatbot, ChatGPT, returned to solid growth in the latter half of 2024, according to a new report published on Thursday by VC firm Andreessen Horowitz (a16z). While it took ChatGPT nine months to grow from 100 million weekly active users in November 2023 to 200 million in August 2024, it's now taken less than six months for the app to double those numbers yet again, the report found. Shortly after its November 2022 release as a research preview, ChatGPT became the fastest app ever to reach 100 million monthly active users -- a milestone it hit in only two months' time. By November 2023, ChatGPT had reached another milestone of 100 million weekly active users, which grew to 300 million by December 2024, then 400 million in February 2025. According to a16z, initial consumer demand for ChatGPT was driven more by novelty. That is, consumers were interested in trying the app but weren't necessarily sure how it would fit into their everyday lives. However, ChatGPT's more recent growth comes on the heels of the release of new models and functionality, including the launch of GPT-4o, which added multimodal capabilities. Shortly after that model's launch, ChatGPT usage spiked from April through May 2024. Later, after the arrival of Advanced Voice Mode, usage grew again from July to August 2024. The o1 model series, led to increased usage during September to October 2024. On mobile, ChatGPT's growth has been more consistent, the firm points out. Users of the ChatGPT mobile app have increased by 5% to 15% every month over the past year, with 175 million of ChatGPT's total 400 million weekly active users now accessing the app on mobile devices. The report also examines the impact rivals like DeepSeek have had on the market. The app surged to No. 2 globally in just 10 days and reached No. 2 on mobile in February, capturing 15% of ChatGPT's mobile user base. On mobile, DeepSeek users are even slightly more engaged than Perplexity and Claude users, according to data from mobile intelligence provider Sensor Tower. However, it still lags behind ChatGPT on this front. Other findings in the new market analysis include recommendations of tools for AI developers and coders, rankings of the top AI apps by category and revenue, and rankings of the top gen AI apps across mobile and web. On the latter front, ChatGPT comes in at No. 1 by unique monthly visits on the web and monthly active users on mobile, the report noted, citing data from market intelligence provider Similarweb.

ChatGPT Hits 400 Million Weekly Users as AI Adoption Increases, a16z Reports

OpenAI's ChatGPT has doubled its weekly active users in less than six months, reaching 400 million in February 2025, according to a new report by VC firm Andreessen Horowitz (a16z). The report suggested that growth had initially plateaued from March 2023 to April 2024 but surged after new features were introduced. The rapid increase follows the release of new models and features, including GPT-4o's multimodal capabilities, which drove a surge in usage between April and May 2024. Advanced Voice Mode further boosted engagement from July to August, while the o1 model series led to increased adoption from September to October. ChatGPT's mobile usage has also seen steady growth, with users increasing by 5% to 15% each month over the past year. Of its 400 million weekly active users, 175 million now access ChatGPT on mobile. In terms of usage and monetisation, competition is intensifying, with China's DeepSeek reaching No. 2 globally within 10 days of launch and capturing 15% of ChatGPT's mobile user base by February. Overall, it still lags ChatGPT. Deepseek also reported a theoretical daily profit margin of 545% for its inference services, despite limitations in monetisation and discounted pricing structures. Another observation from the report includes how the most-used AI apps aren't always the most profitable, and many niche AI tools generate higher revenue per user. Industries like photo editing, nutrition, and language learning have high revenue potential despite smaller user bases. Subscription-based AI services rank higher in revenue than mass-market AI apps.