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OpenAI ‘o’ Leak: What We Know About ChatGPT’s Always-On Assistant Before DevDay

calendar_today September 29, 2026 person DZone Staff domain dzone

References to an unannounced OpenAI assistant called “o” have surfaced in ChatGPT, suggesting the company is testing an always-on assistant that may have some form of email functionality. OpenAI has not announced the product, described its feature set, or confirmed a release date. With DevDay taking place Sept.

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