Deployment reach

ChatGPT surpasses 400 million weekly active users

OpenAI told Reuters that ChatGPT had exceeded 400 million weekly active users, up from 300 million in December, while paying business users surpassed two million.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM56confidence 96/100

Why it moved the index

A one-third rise to more than 400 million weekly users in roughly two months demonstrates exceptional global diffusion and societal exposure. The event concerns the moving ChatGPT service, so no unsupported exact model relationship is added.

AUDIT TRAIL

Assessment history

  1. R1
    Toward 56 · confidence 96

    New February 2025 global deployment milestone with no durable canonical or substantially identical event collision.

    12 Aug 2026
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  1. DoomBench assesses “ChatGPT surpasses 400 million weekly active users” as evidence moving toward doom, with magnitude 56 and confidence 96 out of 100 in the deployment reach category.

  2. The DoomBench assessment of “ChatGPT surpasses 400 million weekly active users” is based on reporting from Reuters and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “ChatGPT surpasses 400 million weekly active users” as follows: OpenAI told Reuters that ChatGPT had exceeded 400 million weekly active users, up from 300 million in December, while paying business users surpassed...

    https://www.doombench.com/news/chatgpt-surpasses-400-million-weekly-active-users-2025-02-20