Following the explosive popularity of Meta's Muse, OpenAI has quickly launched its personal assistant "O" to counter it, with a planned release at Dev Day.

As Meta's personal AI agent Muse receives the highest rating from JPMorgan Chase and enjoys unparalleled popularity, OpenAI is accelerating the launch of a resident AI assistant called "o" to directly confront this increasingly fierce competition in the AI agent arena.

According to a recent report by tech media wccftech , OpenAI has reportedly added the "o" brand logo to its ChatGPT Pro product documentation, indicating that an official release is imminent and is expected to be unveiled at the Dev Day event this Tuesday (September 29).

This move is widely interpreted as a direct response to Meta Muse's recent strong performance—JPMorgan Chase, in its latest Assistant Benchmark review, listed Meta Muse as the top AI agent currently available.

This Dev Day will also bring more major announcements: OpenAI is expected to launch a new subscription tier, ChatGPT Pro Max, priced at up to $500 per month , emphasizing an ultra-fast response experience. Meanwhile, "o" is also rumored to work in conjunction with an OpenAI consumer AI hardware device that resembles a donut and features moving parts, further expanding its product ecosystem.

"o": Always online, targeting long-duration mission scenarios.

According to reports, OpenAI's response to the challenge posed by Muse is to launch a product positioned as a "resident AI assistant"—"o".

Currently, there is limited publicly available information, but @synthwavedd posted on the social platform X that "o" will reportedly be powered by a specific variant of GPT-6 Astra called "Aeon," which is said to have outstanding advantages in handling long-running tasks—precisely the core capability that an efficient personal intelligent agent must possess.

In terms of the competitive landscape, "o" has more than just Muse as a competitor. With OpenAI's entry into the market, it is also targeting Grok Bot and Hermes Agent. Under this three-way competition, the intensity of competition in the AI personal assistant field is rapidly escalating.

Dev Day: A Two-Pronged Approach - New Brand + Premium Subscription

In addition to "o", OpenAI is expected to launch several major updates at Dev Day, forming a powerful combination.

In terms of subscription pricing, OpenAI plans to launch ChatGPT Pro Max, with a monthly fee of up to $500 , which will feature ultra-fast response times. This performance will reportedly be supported by Cerebras' wafer-scale engine, targeting professional users with extremely high requirements for response speed and performance.

At the hardware ecosystem level, "o" will also serve as a software companion, deeply integrated with an upcoming consumer AI device from OpenAI. This device is rumored to resemble a donut and may be equipped with moving parts, demonstrating OpenAI's continued ambition in the AI hardware field.

According to reports, the simultaneous development of two product lines indicates that OpenAI is attempting to build competitive barriers in both software intelligent agents and hardware terminals to cope with multifaceted pressure from competitors such as Meta.

JPMorgan Chase crowned Muse, putting immense pressure on OpenAI.

The rise of Meta Muse was the direct trigger for OpenAI's emergency response.

According to JPMorgan Chase's latest Assistant Benchmark rankings, Meta Muse ranked first among all participating AI agents , surpassing several competitors, including OpenAI products. This authoritative endorsement has enabled Muse to continue attracting market attention recently, and has also to some extent stolen the pre-opening buzz that originally belonged to OpenAI Dev Day.

Muse is a personal AI agent that can perform multi-step tasks on behalf of users. Its core capabilities include: autonomously opening a cloud browser, browsing web pages like a human, and continuing to process tasks in the background even after the user closes the application.

To eliminate privacy concerns, Muse runs on a dedicated, isolated cloud virtual machine (VM) with an independent browser for securely storing user data and login credentials.

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