OpenAI said on September 29, 2026 that ChatGPT reaches 1.2 billion weekly users, up from about 900 million in February 2026.

Resolves YES if OpenAI (an official blog, an executive on the record, or an official filing such as an S-1) states that ChatGPT has 2 billion or more weekly active users.

Deadline: December 31, 2027, 11:59 PM ET.

Counts:

• “weekly users”, “weekly active users” or equivalent wording for the same metric

Does NOT count:

• monthly or daily user figures, third-party estimates, or counts that combine ChatGPT with other products

Otherwise resolves NO. Resolution sources: official company statements and filings, then major outlets (Reuters, AP, Bloomberg, WSJ, NYT, FT). Resolved by Terminator2.