OpenAI's 'o' Assistant Emerges in ChatGPT Pro Plan Details
OpenAI is reportedly testing a new always-on AI assistant codenamed 'o', with evidence of its existence surfacing through user observations on social media platform X. The feature was briefly listed as a benefit of the $100 ChatGPT Pro subscription plan, appearing alongside other premium offerings such as increased Work and Codex usage, maximum memory allocation, 100GB of file storage, and early access to upcoming features.
References to the 'o' assistant included a display_name configuration set to "o" and an email_suffix parameter of "-o", suggesting potential email integration or identity functionality. This configuration implies the assistant could operate persistently in the background, managing tasks like email correspondence even when users are not actively engaged with the ChatGPT interface.
Always-On Functionality and Potential Use Cases
The described 'always-on' nature of the assistant indicates it would maintain contextual awareness and continue assisting with user tasks without requiring constant reactivation. Such a system could streamline workflows by handling routine communications, scheduling, or information retrieval in the background, aligning with OpenAI's broader vision of proactive AI agents.
While OpenAI has neither confirmed nor denied development of the 'o' assistant, the appearance of specific technical references in plan configurations and user-facing benefits strongly indicates active testing. The inclusion of email-related parameters suggests the company is exploring how persistent AI assistants might interact with personal productivity tools.
Connection to Upcoming DevDay 2026 Announcements
OpenAI has officially scheduled DevDay 2026 for September 29 in San Francisco, where the company traditionally unveils major product updates and technical advancements. Industry analysts anticipate that the event may provide further clarity on the 'o' assistant, including its full feature set, release timeline, and integration with existing ChatGPT services.
The timing of the leaked references, just days before DevDay, supports speculation that 'o' could be among the announcements made during the conference. Attendees are expected to gain insight through technical sessions, live demonstrations, and detailed roadmap presentations from OpenAI's engineering teams.
Distinction from Internal 'Aeon' Agent System
Separate from the consumer-focused 'o' assistant, internal references have also pointed to a system called 'Aeon', which appears to be designed for creating custom agents within ChatGPT workspaces. This distinction suggests OpenAI is pursuing a dual-track approach: developing both ready-to-use consumer assistants like 'o' and configurable agent frameworks for professional or enterprise environments.
While 'Aeon' seems tailored for workspace-specific automation and customization, 'o' appears positioned as a general-purpose, always-on companion for individual users seeking persistent AI support across daily tasks such as email management.
Context Within OpenAI's Recent Product Evolution
The emergence of the 'o' assistant fits within a broader pattern of OpenAI expanding ChatGPT's capabilities beyond basic conversational AI. Recent developments include the rollout of GPT-6 Astra to Plus subscribers, experiments with AI agents that interact with third-party platforms, and explorations into personalized app integration for style mimicry.
Additionally, reports have surfaced regarding a potential $500 ChatGPT Pro Max tier offering enhanced performance for Codex and other developer tools, indicating OpenAI's continued experimentation with premium service tiers. The 'o' assistant may represent another step in this evolution toward more integrated, proactive AI experiences.
Source: BleepingComputer