Monday, Sep 7, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
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ChatGPT had an estimated 100 million monthly active users by January 2023.

The Claim

ChatGPT reached 100 million monthly users within two months of its launch.

Verified by Lenz ·

The Short Version

The milestone is well supported as a widely accepted estimate. UBS analysis based on Similarweb data placed ChatGPT at roughly 100 million monthly active users in January 2023, about two months after its November 30, 2022 launch. However, the figure was not an official OpenAI count, and extensive media repetition largely traces back to that same underlying analysis.

Caveats

  • The 100 million figure was an analyst estimate, not an official OpenAI user count.
  • Many reports repeat the same UBS/Similarweb analysis rather than providing independent measurements.
  • The underlying metric was monthly active users, not necessarily 100 million registered individuals.

The Receipts

  1. ChatGPT sets record for fastest-growing user base - Reuters

    reuters.com

  2. [PDF] ChatGPT may be the fastest-growing consumer app in internet history ...

    ptacts.uspto.gov

  3. ChatGPT reaches 100 million users two months after launch

    theguardian.com

  4. How ChatGPT Managed to Grow Faster Than TikTok or ...

    time.com

  5. ChatGPT reaches 100 million users two months after launch

    amp.theguardian.com

  6. ChatGPT May Be Fastest Growing App in History, UBS Report Says

    businessinsider.com

  7. ChatGPT is growing faster than TikTok - CBS News

    cbsnews.com

  8. ChatGPT sets record for fastest-growing user base - analyst note | Euronews

    euronews.com

  9. ChatGPT sets record for fastest-growing user base - analyst note

    finance.yahoo.com

  10. ChatGPT just became the fastest-growing 'app' of all time | ZDNET

    zdnet.com

+ 16 more sources — see the full list on Lenz

Filed Under

ChatGPTOpenAI

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