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Vaibhav Srivastav reported on October 28, 2026 that OpenAI held a DevDay Exchange event in France, where it officially disclosed that Codex's weekly active users have grown more than 14-fold since the beginning of 2026. The same disclosure also mentioned that ChatGPT Business seats have grown nearly 70% over the past year, work users have tripled since launch, and France has entered the global top ten for active OpenAI API developers. Currently, this claim appears only in this one report, with no other developments or facts.
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OpenAI France DevDay: Codex weekly active users grow more than 14xDevelopments
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Oct 28
Vaibhav Srivastav
OpenAI France DevDay: Codex weekly active users grow more than 14x
OpenAI held a DevDay Exchange event in France. According to official disclosures: since the beginning of 2026, Codex weekly active users have grown more than 14x; ChatGPT Business seats have grown nearly 70% over the past year; work users have tripled since launch; France has entered the global top ten for active OpenAI API developers.