Personal AI Agent Battle Heats Up! Meta's Muse Tops Charts, Grok Bot Sees Surge, OpenAI May Strike Back This Week

The competition among personal AI agents is expanding beyond chat-based Q&A to executing tasks for users. SpaceXAI's Grok Bot continues to grow its weekly active user base, Meta's (META-US) Muse has topped the US App Store free app rankings, and OpenAI is rumored to be preparing a product codenamed 'Aeon,' potentially launching as early as this week. All are vying for control of the gateway through which users handle daily tasks like email, scheduling, and work.

According to Bloomberg, as of September 14, Grok Bot had 418,000 weekly active users, a 24% increase from the previous week. Elon Musk also stated on social platform X that its usage growth rate exceeds any product the company has seen before.

Launched on August 11, Grok Bot is positioned as an 'always-on AI team.' Each bot has its own cloud computer capable of storing files, browser data, and login sessions; even when users shut down their devices, bots can continue running tasks in the background.

Bots can operate authorized websites and applications to complete multi-step tasks such as filling out forms and managing inboxes, notifying users when authorization is required.

Users can assign multiple bots to different tasks, with one designated 'chief of staff' bot coordinating the others. Grok Bot is available via the SuperGrok subscription starting at $30 per month, and also offers a standalone app primarily targeting white-collar workers and small business owners.

Muse Climbs to Top of Free Chart

Meta launched Muse on September 8, focusing on everyday needs such as replying to emails, communicating with merchants, price comparison shopping, and calendar management, accessible within apps like Messenger.

Muse is free to download and rose to No.2 on the US App Store free chart within two days of launch, reaching No.1 by September 22.

According to Bloomberg Intelligence data, Muse’s download volume is four times that of Grok Bot’s standalone app. Meta benefits from a massive existing user base and promotes Muse across its core apps. However, The Information notes that in past launches of chatbots, Meta failed to convert its large user base into expected competitive advantages.

Another invite-only company, Instinct, is attempting to enter from a different angle. Its product books restaurants and shops for users via SMS and phone calls but requires access to credit card information and account passwords. Instinct currently has over 100,000 users and is seeking funding at a $10 billion valuation.

OpenAI Reportedly Preparing Countermove This Week

According to The Information, OpenAI is developing features more directly targeting Grok Bot and discussing how to respond to Muse. Sources say the company plans to repackage and integrate existing agent technologies from Codex and ChatGPT; the internal project is temporarily called 'Codex Bot'.

External observers have also discovered fields such as 'aeonId' and 'memberAeonIds' in the Android version of ChatGPT, leading to speculation that the codename 'Aeon' may refer to a personal agent capable of continuously executing tasks. However, code clues alone are insufficient to confirm the final functionality or name of the product.

An AI engineer on platform X, @dotey, said the related product was originally scheduled for release last week but is now aiming for a debut before OpenAI’s DevDay developer conference in San Francisco on September 29, with a possible launch as early as this week. OpenAI has not made an official statement regarding the release timeline.

OpenAI previously launched ChatGPT Work in July, featuring cross-app execution, continuous project handling, and task scheduling capabilities.

The key to this competition lies not only in which agent can truly integrate into daily workflows but also in whether users are willing to grant access to their accounts, personal data, and payment permissions, allowing AI to act on their behalf.